FARS Meeting Programs

FARS Meeting Programs - 2023 [2022] [2023] [2024]

Friday January 27, 2023 - Membership Meeting

[WB6IQN]

Raffle Winners (L-R):
Mike, KM6WP (1st,4th)
Elise, KI6PUO (5th)
James, K6JPS (3rd)

Not Shown:
Vipin, KN6YEZ (2nd)

Single Sideband Modulation Techniques

Ed Fong, WB6IQN

This month’s meeting convened at Covington. COVID-19 Precautions applied. This meeting was available on-line via Zoom. Mini Flea Market at this meeting.

As a related follow-on to Jeff Anderson’s talk last November on his homebrew HF direct sampling digital transceiver, Ed Fong WB6IQN explains the “phase method” of single-sideband (SSB) generation and detection clearly with a minimum of complex mathematics. This type of SSB generation is used in modern SDR transceivers, including Elecraft, Flex Radio, Icom, Kenwood, Yasesu, and others.

Single-sideband (SSB) appeared in Amateur Radio in the 1950’s. Early equipment generated SSB by using very narrow filters. The method was used in transmitters made by Collins, Swan, Heathkit, Kenwood, Icom, Yaesu, and others. Historically, an AM signal was generated with DSB (double side band) with carrier. The carrier could be rejected with some clever circuitry but the filtering of the adjacent sideband was typically achieved with sharp, narrow analog filters such as crystal filters or mechanical filters pioneered by Collins.

However, analog filters are expensive. With the advent of integrated circuits, signals can be processed digitally, and expensive nalog filters are no longer needed. New methods of SSB modulation and demodulation have lower size, weight, and cost. Come and see how the magic is achieved in the new generation of SSB radios.

Appropriately, the main raffle prize is an uSDX+ all mode HF transceiver which uses the very technique described in Ed’s talk.

Bio

Ed Fong, WB6IQN, teaches RF Wireless Communications and I/O Design Fundamentals for UC Santa Cruz in Silicon Valley. He taught RF Wireless at UC Berkeley from 1998 to 2011.

Ed is the owner of Ed’s Antennas https://edsantennas.weebly.com. More than 12,000 of his DBJ-1, DBJ-2, and TBJ-1 antennas have been sold to hams, commercial users, and agencies. These popular antennas have been featured in QST (March 2017, February 2003 and March 2007), CQ (Summer 2012), ARRL Antenna Compendium Vol 8, and ARRL VHF/UHF Antenna Classics.

Ed’s past presentations to FARS were on single-sideband modulation (January 2023), ground-independent vertical antennas (August 2019), and DMR radio (April 2018).

Raffle

Other:

We will be raffling off prizes at this meeting:

Choice of one of:
- * uSDX+ QRP HF Transceiver Covers 160-6 meters – SSB, CW, digital QRP transceiver. 5 watts CW – 10 watt SSB. Built in CW decoder, full DSP noise reduction. Complete with 3000 MaH LiOn battery, AC adapter/charger, Speaker/microphone
- Radioddity QB25 Mobile Tx/Rx: 136-174, 210-230, and 350-520 MHz (includes non-amateur frequencies), 0.25 uV Rx sensitivity, 10/25 watts out, CTSS and DCS coding, 200 memories, good looking color display, direct entry via microphone key pad, programming software and cable; Radio comes pre-programmed for many Bay Area amateur repeaters courtesy of Ed Fong WB6IQN; If you have been looking to get on 220 MHz, this radio is for you
- Astron SS-30M Power Supply 12 Volt 30 Ampere Switching Power Supply
Choice of one of:
- ATS-20 All Mode Receiver AM/FM/SSB/CW 100KHz-30 MHz - FM Stereo Receiver
- * Tiny Spectrum Analyzer Frequency 100KHz-350MHz, resolution 2.5KHz-640KHz. Bandpass filters for 2.6KHz-640KHz. Built in calibrated Signal generator from 100KHz-960MHz. Complete with cables, telescopic antenna, and LiOn battery
- NEW Nano Vector Network Analyzer (VNA) 2-port network analyzer with SMA connectors, broad frequency coverage 50 kHz to 3.0 GHz, measures S11, S22, S21 and S12, includes calibration kit. Updated version. Best color display
* BaoFeng UV-5R x3 Tri Band VHF/UHF HT, 136-174MHz VHF, 220-240MHz VHF, 420-520MHz, 1/4W TX
* Alien Tape As seen on TV! 10-ft roll, in sealable, reusable storage bag. Two-sided tape, advanced nano-grip technology sticks to any surface without adhesives, releases cleanly leaving no sticky residue, just remove and rinse and reuse, holds 18 lbs, works on glass, tile, stone, brick, wood and other non-painted surfaces. Great for preventing furniture and rugs from sliding, holding phones and radios while driving, or decorating for the holidays. Better than refrigerator magnets and clips for attaching notes to refrigerator doors – “Post-It-Note” convenience for photos.
* Digital Multimeter sold by Harbour Freight

uSDX+ QRP HF Xcvr 160-6 meters – SSB (10W), CW (5W), digital QRP transceiver

Radioddity QB25 Mobile Quad band (144/220/440 MHz) 10-25W mini mobile transceiver

Astron SS-30M Power Supply 12 Volt 30 Ampere Switching Power Supply

ATS-20 All Mode Receiver AM/FM/SSB/CW 100KHz-30 MHz - FM Stereo Receiver

Tiny Spectrum Analyzer Frequency 100KHz-960MHz, resolution 2.5KHz-640KHz

NEW Nano Vector Network Analyzer (VNA) 2-port network analyzer w/ SMA connectors, covers 50 kHz to 3.0 GHz

BaoFeng UV-5R x3 Tri Band VHF/UHF HT

Alien Tape 10-ft roll, two-sided tape for mounting without adhesive. Removable without marking

Digital Multimeter sold by Harbour Freight

* Indicates prizes awarded.

Friday February 24, 2023 - Membership Meeting

[K6OIK]

Raffle Winners (L-R):
Mike, KN6QI (1st,4th)
Bob, WB2URF (2nd)
Ed, WB6IQN (2nd)
Chris, W6COV (3rd)

Advanced Antenna Modeling Tips, Tricks, and Techniques

Steve Stearns, K6OIK

This month’s meeting is scheduled to convene at Covington. COVID-19 Precautions apply. This meeting is also available on-line via Zoom.

Suppose you want to include insulated wire or a tree or two in your antenna model. Suppose you want the modeling software to give you an accurate result. Steve Stearns, K6OIK, discusses advanced antenna modeling tips, tricks, and techniques. He summarizes low-cost or free antenna modeling programs that radio amateurs can use, ranking them by accuracy and limitations. Next, he shows three different methods to model insulated wires. Finally, he shows how dielectric objects, such as trees, may be modeled with thin-wire codes.

Bio

HF phone: Golden Bear Amateur Radio Net, 3,975 kHz LSB at 1900 Pacific time daily.

E-Mail: k6oik AT arrl.net

Articles: /docs/k6oik

Steve Stearns, K6OIK, started in ham radio while in high school at the height of the Heathkit era. He holds an FCC Amateur Extra and a commercial General Radio Operator license with Radar endorsement. He previously held Novice, Technician, and 1st Class Radiotelephone licenses.

He studied electrical engineering at California State University Fullerton, the University of Southern California, and Stanford, specializing in electromagnetic theory, communication, engineering and signal processing.

Steve worked at Northrop Grumman Corporation’s Electromagnetic Systems Laboratory in San Jose, California. He retired as a Northrop Grumman Technical Fellow.

Steve is serving as vice-president of the Foothills Amateur Radio Society, and served previously as assistant director of ARRL Pacific Division. He has over 100 professional publications and presentations and ten patents. Steve has received numerous awards for professional and community volunteer activities.

Raffle

Other:

We will be raffling off prizes at this meeting:

Choice of one of:
- uSDX+ QRP HF Transceiver Covers 160-6 meters – SSB, CW, digital QRP transceiver. 5 watts CW – 10 watt SSB. Built in CW decoder, full DSP noise reduction. Complete with 3000 MaH LiOn battery, AC adapter/charger, Speaker/microphone
- Radioddity QB25 Mobile Quad Band (144/220/440 MHz) 25W mini mobile transceiver w/ 50W antenna
- * Astron SS-30M Power Supply 12 Volt 30 Ampere Switching Power Supply
Choice of one of:
- * ATS-20 All Mode Receiver AM/FM/SSB/CW 100KHz-30 MHz - FM Stereo Receiver
- * Tiny Spectrum Analyzer Frequency 100KHz-350MHz, resolution 2.5KHz-640KHz. Bandpass filters for 2.6KHz-640KHz. Built in calibrated Signal generator from 100KHz-960MHz. Complete with cables, telescopic antenna, and LiOn battery
- Nano Vector Network Analyzer (VNA) 2-port network analyzer with SMA connectors, broad frequency coverage 50 kHz to 900 MHz, measures S11, S22, S21 and S12, includes calibration kit (SMA open, short and 50-ohm). Use it to measure filters, tune duplexers, match antennas, and more
* BaoFeng UV-3R Dual Band VHF/UHF HT
* Non-stick Silicone Rescue tape fuses to itself with no glue
Daiwa CS-201A Antenna Switch DC-600MHz, two position, so-259 connectors

uSDX+ QRP HF Xcvr 160-6 meters – SSB (10W), CW (5W), digital QRP transceiver

Radioddity QB25 Mobile Quad band 25W mini mobile transceiver w/ antenna

Astron SS-30M Power Supply 12 Volt 30 Ampere Switching Power Supply

ATS-20 All Mode Receiver AM/FM/SSB/CW 100KHz-30 MHz - FM Stereo Receiver

Tiny Spectrum Analyzer Frequency 100KHz-960MHz, resolution 2.5KHz-640KHz

Nano Vector Network Analyzer (VNA) 2-port network analyzer w/ SMA connectors, covers 50 kHz to 900 MHz

BaoFeng UV-3R Dual Band VHF/UHF HT

Non-stick Silicone Rescue tape fuses to itself with no glue

Daiwa CS-201A Antenna Switch DC-600MHz

* Indicates prizes awarded.

Friday March 24, 2023 - Membership Meeting

[K9LA]

Raffle Winners (L-R):
José, AJ0SE (1st)
Bill, AG6AJ (2nd)
Chris, W6COV (3rd)

Update on Solar Cycle 25 and Ionospheric Conditions for HF Radio Propagation

Carl Luetzelschwab, K9LA

This month’s meeting is scheduled to convene at Covington. COVID-19 Precautions apply. This meeting is also available on-line via Zoom.

Solar Cycle 25 is well underway. Carl returns to review Cycle 25 with the latest data and predictions. He talks about 10-meter long path and perhaps some 6-meter topics.

Carl’s presentation is available on-line.

Bio

Carl Luetzelschwab K9LA is a long-time Amateur Radio operator, DXer, electrical engineer, writer, and HamSCI member. He curates a tremendous amount of propagation and radio science information at his website, https://k9la.us.

He was first licensed as a Novice in October 1961 with the call WN9AVT. He is a frequent writer and contributor to Amateur Radio magazines on the topic of radio propagation and contesting. His interest in propagation dates to his college days at Purdue University (BSEE 1969, MSEE 1972).

Carl had a 41-year career as an RF design engineer with Motorola and later with Raytheon (formerly Magnavox), where he designed solid-state RF power amplifiers. He retired in October 2013 to pursue Amateur Radio full time.

He has been on DXpeditions (YK9A, OJ0, and many trips to ZF as ZF2LA and ZF2YL) with his wife Vicky, AE9YL. He is on the Top of the Honor Roll (worked all current DXCC entities). He has 160-Meter DXCC and needs four zones on 80-Meters for 5BWAZ.

Raffle

Other:

We will be raffling off prizes at this meeting:

Choice of one of:
- * uSDX+ QRP HF Transceiver Covers 160-6 meters – SSB, CW, digital QRP transceiver. 5 watts CW – 10 watt SSB. Built in CW decoder, full DSP noise reduction. Complete with 3000 MaH LiOn battery, AC adapter/charger, Speaker/microphone
- Radioddity GD-73A HT world’s smallest full featured DMR/analog UHF transceiver. Palm size 2600mAH battery, charging cable, belt clip, earpiece - 2 watts output – 1024 memories 1 watt audio output - comes complete programmed to Bay Area code plug (Ed Fong’s version)
- Radioddity QB25 Mobile Tx/Rx: 136-174, 210-230, and 350-520 MHz (includes non-amateur frequencies), 0.25 uV Rx sensitivity, 10/25 watts out, CTSS and DCS coding, 200 memories, good looking color display, direct entry via microphone key pad, programming software and cable; Radio comes pre-programmed for many Bay Area amateur repeaters courtesy of Ed Fong WB6IQN; If you have been looking to get on 220 MHz, this radio is for you
Choice of one of:
- ATS-20 All Mode Receiver AM/FM/SSB/CW 100KHz-30 MHz - FM Stereo Receiver
- * Tiny Spectrum Analyzer Frequency 100KHz-350MHz, resolution 2.5KHz-640KHz. Bandpass filters for 2.6KHz-640KHz. Built in calibrated Signal generator from 100KHz-960MHz. Complete with cables, telescopic antenna, and LiOn battery
- NEW Nano Vector Network Analyzer (VNA) 2-port network analyzer with SMA connectors, broad frequency coverage 50 kHz to 3.0 GHz, measures S11, S22, S21 and S12, includes calibration kit. Updated version. Best color display
* Non-stick Silicone Rescue tape fuses to itself with no glue
LiOn 4AH USB Power Bank charges via USB and solar, built-in LED Flashlight, with USB charging cable and separate compass
Voyager utility bag Voyager 12-Inch Tool Bag; 15 inside pockets, 6 outside pockets, heavy duty fabric handles and zipper; Perfect for tools, go kit, batteries or emergency gear

uSDX+ QRP HF Xcvr 160-6 meters – SSB (10W), CW (5W), digital QRP transceiver

Radioddity GD-73A HT smallest full featured DMR/analog UHF transceiver w/ 2600mAH battery, 2W RF out, 1024 memories

Radioddity QB25 Mobile Quad band (144/220/440 MHz) 10-25W mini mobile transceiver

ATS-20 All Mode Receiver AM/FM/SSB/CW 100KHz-30 MHz - FM Stereo Receiver

Tiny Spectrum Analyzer Frequency 100KHz-960MHz, resolution 2.5KHz-640KHz

NEW Nano Vector Network Analyzer (VNA) 2-port network analyzer w/ SMA connectors, covers 50 kHz to 3.0 GHz

Non-stick Silicone Rescue tape fuses to itself with no glue

LiOn 4AH USB Power Bank w/ solar charger, LED flashlight

Voyager utility bag 12-inch nylon bag for tools or as a go kit

* Indicates prizes awarded.

Friday April 28, 2023 - FARS Banquet

[Prof. Tom Lee]

Early Spark Gap Transmitters

Prof. Tom Lee
FARS Banquet 2023

The banquet is held at:

Reservations are required.

Bio

Tom Lee paid his way through MIT by working at places like Frank Kent's TV and Radio Service and Hughes Aircraft. His 1989 doctoral thesis at MIT described the world's first CMOS radio. He has been at Stanford University since 1994, helped design PLLs for several microprocessors from DEC and AMD, and has founded or co-founded several companies.

He is an IEEE and Packard Foundation Fellow, and is also the 2011 recipient of the Ho-Am Prize in Engineering (informally known as "The Korean Nobel"). He is a past Director of DARPA's Microsystems Technology Office, and owns between 100 and 200 oscilloscopes, thousands of vacuum tubes and kilograms of obsolete semiconductors. No one, including himself, quite knows why.

Friday May 26, 2023 - Membership Meeting

[KC6ZKT]

Raffle Winners (L-R):
Adrian, K3ADM (5th)
Mike, KN6QI (1st)
Henry, W6REK (2nd)
Steve, K6OIK (6th)
Michael, NE6RD (3rd)

Repeaters to Go… Wild!

Steve, KC6ZKT

This month’s meeting is scheduled to convene at Covington. COVID-19 Precautions apply. This meeting is also available on-line via Zoom.

Steve, KC6ZKT, repeats his popular presentation on repeaters, first presented to FARS October 2020. What if you’re organizing a backcountry event where there is no communications infrastructure? It’s the kind of problem that amateur radio operators are uniquely suited to solve. What if your repeater site is only accessible on foot? Then you need a portable repeater system that can be carried to site in a backpack.

Steve talks about design requirements for highly portable repeaters systems, show and demonstrate two 70-cm systems he has built for public service events (and a third in-progress), and review events where they were used.

Bio

Steve Sergeant, KC6ZKT, is a third-generation ham. Originally licensed Novice class in 1972, his licensed expired, but in 1991 he was granted KC6ZKT as a Technician and has since upgraded to Extra.

Steve has a long career in audio engineering for professional and later consumer audio system integration. He currently works at Dolby Laboratories as an Applications Engineer.

Steve is on the boards of the WVARA and the Nature Sounds Society. He is also a volunteer backpacking instructor for the Sierra Club, who teaches in ultralight techniques, and a Uniformed Volunteer for California State Parks at Henry Coe State Park.

Raffle

Other:

We will be raffling off prizes at this meeting:

Choice of one of:
- * uSDX+ QRP HF Transceiver Covers 160-6 meters – SSB, CW, digital QRP transceiver. 5 watts CW – 10 watt SSB. Built in CW decoder, full DSP noise reduction. Complete with 3000 MaH LiOn battery, AC adapter/charger, Speaker/microphone
- Radioddity GD-73A HT world’s smallest full featured DMR/analog UHF transceiver. Palm size 2600mAH battery, charging cable, belt clip, earpiece - 2 watts output – 1024 memories 1 watt audio output - comes complete programmed to Bay Area code plug (Ed Fong’s version)
- Radioddity QB25 Mobile Quad Band (144/220/440 MHz) 25W mini mobile transceiver w/ 50W antenna
Choice of one of:
- ATS-20 All Mode Receiver AM/FM/SSB/CW 100KHz-30 MHz - FM Stereo Receiver
- Tiny Spectrum Analyzer Frequency 100KHz-350MHz, resolution 2.5KHz-640KHz. Bandpass filters for 2.6KHz-640KHz. Built in calibrated Signal generator from 100KHz-960MHz. Complete with cables, telescopic antenna, and LiOn battery
- * BaoFeng UV-5R x3 Tri Band VHF/UHF HT, 136-174MHz VHF, 220-240MHz VHF, 420-520MHz, 1/4W TX
* Non-stick Silicone Rescue tape fuses to itself with no glue
Voyager utility bag Voyager 12-Inch Tool Bag; 15 inside pockets, 6 outside pockets, heavy duty fabric handles and zipper; Perfect for tools, go kit, batteries or emergency gear
* LiOn 18650 Battery with Smart Charger
* Emergency Light Switch

uSDX+ QRP HF Xcvr 160-6 meters – SSB (10W), CW (5W), digital QRP transceiver

Radioddity GD-73A HT smallest full featured DMR/analog UHF transceiver w/ 2600mAH battery, 2W RF out, 1024 memories

Radioddity QB25 Mobile Quad band 25W mini mobile transceiver w/ antenna

ATS-20 All Mode Receiver AM/FM/SSB/CW 100KHz-30 MHz - FM Stereo Receiver

Tiny Spectrum Analyzer Frequency 100KHz-960MHz, resolution 2.5KHz-640KHz

BaoFeng UV-5R x3 Tri Band VHF/UHF HT

Non-stick Silicone Rescue tape fuses to itself with no glue

Voyager utility bag 12-inch nylon bag for tools or as a go kit

LiOn 18650 Battery with Smart Charger

Emergency Light Switch

* Indicates prizes awarded.

Friday June 16, 2023 - Membership Meeting

[K6OIK]

Raffle Winners (L-R):
Mike, KN6QI (1st)
Ed, WB6IQN (3rd)
???, ??? (2nd)

Black Box Analysis of Microwave Networks

Steve Stearns, K6OIK

This month’s meeting is scheduled to convene at Covington. COVID-19 Precautions apply. This meeting is also available on-line via Zoom.

This meeting is one week earlier than usual. It has been scheduled for the 3rd Friday instead of the usual 4th Friday of the month due to Field Day on the 4th Friday of June. Be sure to put the correct date on the calendar.

You’ve heard that a VNA measures the “S” parameters of devices like antennas, transmission lines, and filters. So what are S parameters and how are they used? This talk explains black box analysis, ports, and the various parameter systems that are used to describe physical systems ranging from classical multi-terminal circuits and microwave networks to antennas and general electromagnetic scatterers.

Bio

HF phone: Golden Bear Amateur Radio Net, 3,975 kHz LSB at 1900 Pacific time daily.

E-Mail: k6oik AT arrl.net

Articles: /docs/k6oik

Steve worked at Northrop Grumman Corporation’s Electromagnetic Systems Laboratory in San Jose, California. He retired as a Northrop Grumman Technical Fellow.

Raffle

Other:

We will be raffling off prizes at this meeting:

Choice of one of:
- Nano VNA H4 10 kHz to 5.4 GHz, HF, VHF, UHF, 4-inch touch screen, time domain reflectometer (TDR) function, includes cables and calibration kit. Measures S parameters, standing wave ratio, phase delay, Smith charts. Use to tune antennas, duplexers, filters, and more
- uSDX+ QRP HF Transceiver Covers 160-6 meters – SSB, CW, digital QRP transceiver. 5 watts CW – 10 watt SSB. Built in CW decoder, full DSP noise reduction. Complete with 3000 MaH LiOn battery, AC adapter/charger, Speaker/microphone
- Radioddity GD-73A HT world’s smallest full featured DMR/analog UHF transceiver. Palm size 2600mAH battery, charging cable, belt clip, earpiece - 2 watts output – 1024 memories 1 watt audio output - comes complete programmed to Bay Area code plug (Ed Fong’s version)
- Radioddity QB25 Mobile Tx/Rx: 136-174, 210-230, and 350-520 MHz (includes non-amateur frequencies), 0.25 uV Rx sensitivity, 10/25 watts out, CTSS and DCS coding, 200 memories, good looking color display, direct entry via microphone key pad, programming software and cable; Radio comes pre-programmed for many Bay Area amateur repeaters courtesy of Ed Fong WB6IQN; If you have been looking to get on 220 MHz, this radio is for you
Choice of one of:
- * ATS-20 All Mode Receiver AM/FM/SSB/CW 100KHz-30 MHz - FM Stereo Receiver
- BaoFeng UV-5R x3 Tri Band VHF/UHF HT, 136-174MHz VHF, 220-240MHz VHF, 420-520MHz, 1/4W TX
Voyager utility bag Voyager 12-Inch Tool Bag; 15 inside pockets, 6 outside pockets, heavy duty fabric handles and zipper; Perfect for tools, go kit, batteries or emergency gear
Harbour Freight Multipurpose Light - 144 lumens, great emergency light uses the latest COB LED technology
Radioditty 7900D triband mobile antenna - covers 2 meters, 1.25 meters and 70cm

Nano VNA H4 Vector Network Analyzer. 10 KHz to 5.4GHz, 4in touch screen

uSDX+ QRP HF Xcvr 160-6 meters – SSB (10W), CW (5W), digital QRP transceiver

Radioddity GD-73A HT smallest full featured DMR/analog UHF transceiver w/ 2600mAH battery, 2W RF out, 1024 memories

Radioddity QB25 Mobile Quad band (144/220/440 MHz) 10-25W mini mobile transceiver

ATS-20 All Mode Receiver AM/FM/SSB/CW 100KHz-30 MHz - FM Stereo Receiver

BaoFeng UV-5R x3 Tri Band VHF/UHF HT

Voyager utility bag 12-inch nylon bag for tools or as a go kit

Harbour Freight Multipurpose Light - 144 lumens, great emergency light uses the latest COB LED technology

Radioditty 7900D triband mobile antenna - covers 2 meters, 1.25 meters and 70cm

* Indicates prizes awarded.

Friday July 28, 2023 - Membership Meeting

[KC6TYD]

Raffle Winners (L-R):
Mark, AF6DW (4th)
José, AJ0SE (2nd, 3rd)
Adrian, K3ADM (2nd)
Phil, KA6MZE (6th)

Parachute Mobile

Rob Fenn, KC6TYD

This month’s meeting is scheduled to convene at Covington. COVID-19 Precautions apply. This meeting is also available on-line via Zoom.

Amateur Radio can be both a hobby and a thrill sport. For the last 13 years Parachute Mobile has been inspiring both ham and non-hams with are unique twist to ham radio. The concept is simple but making it happen takes a bit of creativity. Come and see some of the new changes we’ve made over the years.

Bio

Rob Fenn, KC6TYD is active in PAARA.

When Parachute Mobile began, Rob was recruited as the Safety Officer. When the Team Coordinator position opened up Rob grabbed it and has handling all the coordinating, scheduling, and promoting.

He is currently working as a paramedic with AMR in Santa Clara County.

Raffle

Other:

We will be raffling off prizes at this meeting:

Choice of one of:
- Nano VNA H4 10 kHz to 5.4 GHz, HF, VHF, UHF, 4-inch touch screen, time domain reflectometer (TDR) function, includes cables and calibration kit. Measures S parameters, standing wave ratio, phase delay, Smith charts. Use to tune antennas, duplexers, filters, and more
- uSDX+ QRP HF Transceiver Covers 160-6 meters – SSB, CW, digital QRP transceiver. 5 watts CW – 10 watt SSB. Built in CW decoder, full DSP noise reduction. Complete with 3000 MaH LiOn battery, AC adapter/charger, Speaker/microphone
- Radioddity QB25 Mobile Tx/Rx: 136-174, 210-230, and 350-520 MHz (includes non-amateur frequencies), 0.25 uV Rx sensitivity, 10/25 watts out, CTSS and DCS coding, 200 memories, good looking color display, direct entry via microphone key pad, programming software and cable; Radio comes pre-programmed for many Bay Area amateur repeaters courtesy of Ed Fong WB6IQN; If you have been looking to get on 220 MHz, this radio is for you
Choice of one of:
- * ATS-20 All Mode Receiver AM/FM/SSB/CW 100KHz-30 MHz - FM Stereo Receiver
- * BaoFeng UV-5R x3 Tri Band VHF/UHF HT, 136-174MHz VHF, 220-240MHz VHF, 420-520MHz, 1/4W TX
* Pittsburgh Digital Caliper 6 inch Digital Electronic Caliper, large 4-digit LCD display, accurage to 1/1000 inch
* Voyager utility bag Voyager 12-Inch Tool Bag; 15 inside pockets, 6 outside pockets, heavy duty fabric handles and zipper; Perfect for tools, go kit, batteries or emergency gear
Harbour Freight Multipurpose Light - 144 lumens, great emergency light uses the latest COB LED technology
* Alien Tape As seen on TV! 10-ft roll, in sealable, reusable storage bag. Two-sided tape, advanced nano-grip technology sticks to any surface without adhesives, releases cleanly leaving no sticky residue, just remove and rinse and reuse, holds 18 lbs, works on glass, tile, stone, brick, wood and other non-painted surfaces. Great for preventing furniture and rugs from sliding, holding phones and radios while driving, or decorating for the holidays. Better than refrigerator magnets and clips for attaching notes to refrigerator doors – “Post-It-Note” convenience for photos.

Nano VNA H4 Vector Network Analyzer. 10 KHz to 5.4GHz, 4in touch screen

uSDX+ QRP HF Xcvr 160-6 meters – SSB (10W), CW (5W), digital QRP transceiver

Radioddity QB25 Mobile Quad band (144/220/440 MHz) 10-25W mini mobile transceiver

ATS-20 All Mode Receiver AM/FM/SSB/CW 100KHz-30 MHz - FM Stereo Receiver

BaoFeng UV-5R x3 Tri Band VHF/UHF HT

Pittsburgh Digital Caliper 6 inch Digital Electronic Caliper, large 4-digit LCD display

Voyager utility bag 12-inch nylon bag for tools or as a go kit

Harbour Freight Multipurpose Light - 144 lumens, great emergency light uses the latest COB LED technology

Alien Tape 10-ft roll, two-sided tape for mounting without adhesive. Removable without marking

* Indicates prizes awarded.

Friday August 25, 2023 - Membership Meeting

[WB6IQN]

Raffle Winners (L-R):
Dave, W6VYC (1st)
Ed, WB6IQN (2nd)
Mike, KN6QI (3rd)

Raffle Winners (not shown):
Lloyd, KD6FJI (4th)

Phase Lock Loops for Modern Radio/Wireless Circuits

Edison Fong, WB6IQN

This month’s meeting is scheduled to convene at Covington. COVID-19 Precautions apply. This meeting is also available on-line via Zoom.

Phase Lock Loops (PLL) are used everywhere - not only in our transceivers, but in cell phones, televisions, computers, etc. Modern wireless devices would not exist without them. PLL’s were not practical until the invention of integrated circuits that allow hundreds, and later thousands, of transistors on a single chip.

Prior to the PLL, crystals were used for VHF FM, which allowed operation on a small number of discrete frequencies. Crystals were expensive, so most hams could only afford to operate on a few channels.

Ed explains how PLL’s work in a non-mathematical presentation. He explains where phase noise originates, how it limits dynamic range, and the design techniques used to minimize it. Ed will bring his HP 8591 spectrum analyzer and compare the phase noise of various HT’s to a crystal control radio. Bring your HT and see how yours performs against a real crystal-controlled radio.

Bio

Ed Fong, WB6IQN, teaches RF Wireless Communications and I/O Design Fundamentals for UC Santa Cruz in Silicon Valley. He taught RF Wireless at UC Berkeley from 1998 to 2011.

Ed’s past presentations to FARS were on single-sideband modulation (January 2023), ground-independent vertical antennas (August 2019), and DMR radio (April 2018).

Raffle

Other:

We will be raffling off prizes at this meeting:

Choice of one of:
- Lenovo i5 Laptop - Windows 10; 8 GB RAM, 256 GB SSD, USB 3.0, 12.5-inch screen, 15 hours battery life, less than 3 pounds, 0.8 inches thick. PC benchmark 4,717 - very respectable. CNET rates this laptop a 4.3/5. Perfect to carry around
- Nano VNA H4 10 kHz to 5.4 GHz, HF, VHF, UHF, 4-inch touch screen, time domain reflectometer (TDR) function, includes cables and calibration kit. Measures S parameters, standing wave ratio, phase delay, Smith charts. Use to tune antennas, duplexers, filters, and more
- * uSDX+ QRP HF Transceiver Covers 160-6 meters – SSB, CW, digital QRP transceiver. 5 watts CW – 10 watt SSB. Built in CW decoder, full DSP noise reduction. Complete with 3000 MaH LiOn battery, AC adapter/charger, Speaker/microphone
- Radioddity QB25 Mobile Quad Band (144/220/440 MHz) 25W mini mobile transceiver w/ 50W antenna
Choice of one of:
- ATS-20 All Mode Receiver AM/FM/SSB/CW 100KHz-30 MHz - FM Stereo Receiver
- * BaoFeng UV-5R Dual Band VHF/UHF HT
S-Pixie 40M 180mW CW Tranceiver completed built and tested. Includes headphone, power connector for both 12v and 9v battery
* Flashlight 800 lumens Mil spec - 800 lumen aircraft aluminum LED flashlight with 18650 3000mAh battery and AAA battery adapter
* Harbour Freight Multipurpose Light - 144 lumens, great emergency light uses the latest COB LED technology

Lenovo i5 Laptop - Windows 10; 8 GB RAM, 256 GB SSD, USB 3.0, 12.5-inch screen, under 3 pounds

Nano VNA H4 Vector Network Analyzer. 10 KHz to 5.4GHz, 4in touch screen

uSDX+ QRP HF Xcvr 160-6 meters – SSB (10W), CW (5W), digital QRP transceiver

Radioddity QB25 Mobile Quad band 25W mini mobile transceiver w/ antenna

ATS-20 All Mode Receiver AM/FM/SSB/CW 100KHz-30 MHz - FM Stereo Receiver

BaoFeng UV-5R Dual Band VHF/UHF HT

S-Pixie 40M 180mW CW Tranceiver completed built and tested. Headphone, power 12v / 9v battery

Flashlight Mil spec - 800 lumen aircraft aluminum LED flashlight, rechargable 18650 3000mAh battery

Harbour Freight Multipurpose Light - 144 lumens, great emergency light uses the latest COB LED technology

* Indicates prizes awarded.

Friday September 22, 2023 - Membership Meeting

Home Brew Winners (L-R):
Dick, K6PBF (3rd)
Mark, AF6DW (2nd)
Bruce, K6BAW (1st)
Jeff, AJ6WX (4th)
Paul, AA6PZ

Raffle Winners (L-R):
Adrian, K3ADM (6th)
John, K6JDS (1st)
José, AJ0SE (4th)
Steve, K6OIK (7th)
Dave, W6VYC (2nd)
John, W6JPP (2nd)
Mike, K6QFO (5th)
Jeff, AJ6WX (2nd)

Raffle Winners (not shown):
Ed, WB6IQN (3rd)

FARS Annual Amateur Radio Home Brew Contest

K6YA

This month’s meeting is scheduled to convene at Covington. COVID-19 Precautions apply. This meeting is also available on-line via Zoom.

This meeting is about you. Yes you, our members and guests. Our Annual Amateur Radio Homebrew Contest is a opportunity to show off a project that you have worked on in the past year. Each participant has a few minutes to show and explain his project to our audience and has a chance to win one of our four prizes:

Bio

K6YA is the Club radio call sign for the Foothills Amateur Radio Society. The current trustee for K6YA is KA6MZE. This picture is of the Field Day 2007 set up crew.

Raffle

Other:

We will be raffling off prizes at this meeting:

Choice of one of:
- Lenovo i5 Laptop - Windows 10; 8 GB RAM, 256 GB SSD, USB 3.0, 12.5-inch screen, 15 hours battery life, less than 3 pounds, 0.8 inches thick. PC benchmark 4,717 - very respectable. CNET rates this laptop a 4.3/5. Perfect to carry around
- Nano VNA H4 10 kHz to 5.4 GHz, HF, VHF, UHF, 4-inch touch screen, time domain reflectometer (TDR) function, includes cables and calibration kit. Measures S parameters, standing wave ratio, phase delay, Smith charts. Use to tune antennas, duplexers, filters, and more
- uSDX+ QRP HF Transceiver Covers 160-6 meters – SSB, CW, digital QRP transceiver. 5 watts CW – 10 watt SSB. Built in CW decoder, full DSP noise reduction. Complete with 3000 MaH LiOn battery, AC adapter/charger, Speaker/microphone
- * Radioddity QB25 Mobile Quad Band (144/220/440 MHz) 25W mini mobile transceiver w/ 50W antenna
Choice of one of:
- * CountyComm GP-7 SSB General Receiver LW/AM/FM/HF (2.5-30MHz), Full SDR w/ SiLabs 4743 chip, and nice stereo FM receiver
- * Portable Digital Oscilloscope Bandwidth 200kHz, vertical range 5 mV/div to 20 V/div, horizontal time base range 10 μsec/div to 50 sec/div, max input 50-V peak, 2.4-inch TFT color screen, alligator clip probes, 9-V plug-in power supply.
- * BaoFeng UV-5R x2 Dual Band VHF/UHF HT, 136-174MHz VHF (5W TX), 420-520MHz (4W TX), FM Broadcast, 128 channel memory, 1.8-Ah Li-Ion battery, drop-in smart charger
* S-Pixie 40M 180mW CW Tranceiver completed built and tested. Includes headphone, power connector for both 12v and 9v battery
* Flashlight 800 lumens Mil spec - 800 lumen aircraft aluminum LED flashlight with 18650 3000mAh battery and AAA battery adapter
* Book: Open Circuits The Inner Beauty of Electronic Components. A book written by Eric Schlaepfer and Windell Oskay, a photographic exploration of the beautiful design inside everyday electronics. Stunning cross-section photography unlocks a hidden world of elegance, subtle complexity, and wonder
* Workman KS-2 SMA Mag Mount Mobile Radio Antenna
* Harbour Freight Multipurpose Light - 144 lumens, great emergency light uses the latest COB LED technology

Lenovo i5 Laptop - Windows 10; 8 GB RAM, 256 GB SSD, USB 3.0, 12.5-inch screen, under 3 pounds

Nano VNA H4 Vector Network Analyzer. 10 KHz to 5.4GHz, 4in touch screen

uSDX+ QRP HF Xcvr 160-6 meters – SSB (10W), CW (5W), digital QRP transceiver

Radioddity QB25 Mobile Quad band 25W mini mobile transceiver w/ antenna

CountyComm GP-7 SSB General Receiver LW/AM/FM/HF (2.5-30MHz)

Portable Digital Oscilloscope Bandwidth 200kHz, 2.4-inch TFT color screen

BaoFeng UV-5R x2 Dual Band VHF/UHF HT

S-Pixie 40M 180mW CW Tranceiver completed built and tested. Headphone, power 12v / 9v battery

Flashlight Mil spec - 800 lumen aircraft aluminum LED flashlight, rechargable 18650 3000mAh battery

Book: Open Circuits The Inner Beauty of Electronic Components by Eric Schlaepfer and Windell Oskay

[Workman KS-2 Mag Mount Mobile Radio Antenna]

Workman KS-2 SMA Mag Mount Mobile Radio Antenna

Harbour Freight Multipurpose Light - 144 lumens, great emergency light uses the latest COB LED technology

* Indicates prizes awarded.
GP7 donated by Nick Cassarino.

Friday October 27, 2023 - Membership Meeting

[K6OIK]

Raffle Winners (L-R):
Bernard, KI6TSF (1st)
Vipin, KN6YEZ (1st)

Raffle Winners (not shown):
Nick, N6VOA (1st)

Grow An Antenna … From Seeds!

Steve Stearns, K6OIK

This month’s meeting is scheduled to convene at Covington. COVID-19 Precautions apply. This meeting is also available on-line via Zoom.

In a sequel to his February talk, Steve, K6OIK shows new results on modeling antennas that incorporate trees. Amateur antennas are universally made of metal conductors and by “bending metal.” Trees, shrubs, buildings and other objects near an antenna, are regarded as nuisances that reduce an antenna’s performance by distorting its pattern or adding unknown losses. Antenna modeling software is commonly thought to be incapable of modeling such effects.

This presentation reveals how popular antenna modeling programs EZNEC, 4nec2, and MMANA-GAL, which use thin-wire engines like NEC or MiniNEC, can be used to model dielectric objects. Steve shows three different methods to model insulated wires. He then shows how general dielectric objects may be modeled with thin-wire codes.

Finally he shows that trees can do more than just support an antenna. They can be an effective part of an antenna. In fact, metal is unnecessary. Antennas can be organic and renewable. Steve shows how to landscape an antenna farm for improved performance – what seeds to plant and where to plant them!

Steve’s presentation is available on-line.

Bio

HF phone: Golden Bear Amateur Radio Net, 3,975 kHz LSB at 1900 Pacific time daily.

E-Mail: k6oik AT arrl.net

Articles: /docs/k6oik

Steve worked at Northrop Grumman Corporation’s Electromagnetic Systems Laboratory in San Jose, California. He retired as a Northrop Grumman Technical Fellow.

Raffle

Other:

We will be raffling off prizes at this meeting:

Choice of one of:
- Lenovo i5 Laptop - Windows 10; 8 GB RAM, 256 GB SSD, USB 3.0, 12.5-inch screen, 15 hours battery life, less than 3 pounds, 0.8 inches thick. PC benchmark 4,717 - very respectable. CNET rates this laptop a 4.3/5. Perfect to carry around
- * Nano VNA H4 10 kHz to 5.4 GHz, HF, VHF, UHF, 4-inch touch screen, time domain reflectometer (TDR) function, includes cables and calibration kit. Measures S parameters, standing wave ratio, phase delay, Smith charts. Use to tune antennas, duplexers, filters, and more
- * uSDX+ QRP HF Transceiver Covers 160-6 meters – SSB, CW, digital QRP transceiver. 5 watts CW – 10 watt SSB. Built in CW decoder, full DSP noise reduction. Complete with 3000 MaH LiOn battery, AC adapter/charger, Speaker/microphone
Choice of one of:
- ATS-20 All Mode Receiver AM/FM/SSB/CW 100KHz-30 MHz - FM Stereo Receiver
- Professional Motorola GP68 – UHF 430-470 MHz transceiver complete with charger, antenna, new battery, manual - 16 Channel UHF – preprogrammed to local UHF HAM repeaters, Mil Spec 810 – has hardware modifications for direct keypad frequency entry
- Tiny Spectrum Analyzer Frequency 100KHz-350MHz, resolution 2.5KHz-640KHz. Bandpass filters for 2.6KHz-640KHz. Built in calibrated Signal generator from 100KHz-960MHz. Complete with cables, telescopic antenna, and LiOn battery
- BaoFeng UV-5R x2 Dual Band VHF/UHF HT, 136-174MHz VHF (5W TX), 420-520MHz (4W TX), FM Broadcast, 128 channel memory, 1.8-Ah Li-Ion battery, drop-in smart charger
Flashlight 800 lumens Mil spec - 800 lumen aircraft aluminum LED flashlight with 18650 3000mAh battery and AAA battery adapter
Retekess portable radio Covers AM/FM/SW. Built in MP3 player/recorder. Great for emergencies, WWV monitoring. Built in LiOn battery
* Diamond SG7500 NMO UHF/VHF (2m/70cm) mobile antenna, 150W
S-Pixie 40M 180mW CW Tranceiver completed built and tested. Includes headphone, power connector for both 12v and 9v battery

Lenovo i5 Laptop - Windows 10; 8 GB RAM, 256 GB SSD, USB 3.0, 12.5-inch screen, under 3 pounds

Nano VNA H4 Vector Network Analyzer. 10 KHz to 5.4GHz, 4in touch screen

uSDX+ QRP HF Xcvr 160-6 meters – SSB (10W), CW (5W), digital QRP transceiver

ATS-20 All Mode Receiver AM/FM/SSB/CW 100KHz-30 MHz - FM Stereo Receiver

Professional Motorola GP68 – UHF 430-470 MHz transceiver charger, antenna, battery, and manual

Tiny Spectrum Analyzer Frequency 100KHz-960MHz, resolution 2.5KHz-640KHz

BaoFeng UV-5R x2 Dual Band VHF/UHF HT

Flashlight Mil spec - 800 lumen aircraft aluminum LED flashlight, rechargable 18650 3000mAh battery

Retekess portable radio Covers AM/FM/SW. MP3 player/recorder. Great for emergencies, WWV monitoring. LiOn battery

Diamond SG7500 NMO UHF/VHF (2m/70cm) mobile antenna, 150W

S-Pixie 40M 180mW CW Tranceiver completed built and tested. Headphone, power 12v / 9v battery

* Indicates prizes awarded.

Friday November 17, 2023 - Membership Meeting & Elections

[WB6IQN]

Raffle Winners (L-R):
David, KK6OZ (2nd)
Stiv, K9STV (1st)
Wolfgang, AI6SL (3rd)

uSDX+ Portable All-Mode HF Transceiver

Ed Fong, WB6IQN

This month’s meeting is scheduled to convene at Covington. COVID-19 Precautions apply. This meeting is also available on-line via Zoom.

This is our annual meeting where we hold elections for the board of directors. All members are encouraged to attend and participate.

This meeting is one week earlier than usual. It has been scheduled for the 3rd Friday instead of the usual 4th Friday of the month due to Thanksgiving. Be sure to put the correct date on the calendar.

This month’s meeting is our annual membership meeting. We are holding elections for members of the board of directors. The following have been nominated by the Board at our November 9 BoD meeting for a three year term on the Board starting in 2024:

Name	Call	Status	Term
Richard Baldwinson	N6ATD	(incumbent)	[2024-2026]
Shrikumar Hariharasubrahmanian	KA6Q	(incumbent)	[2024-2026]
Nianfeng (Nian) Li	WU6P	(incumbent)	[2024-2026]

So what is the newest fad in the world of ham radio? It is the uSDX+ all-mode portable HF transceiver. Ed Fong, WB6IQN, describes the remarkable uSDX+ transceiver in detail. It is a software-defined transceiver based on the Microchip Technology (formerly Atmel) ATmega328P CMOS microcontroller which controls a Silicon Labs Si5351 clock generator chip. The entire radio including the 4000-mAh Lion battery weighs only 18 oz. The radio can operate all weekend on a single charge.

General coverage receiver: 3.5 MHz to 30 MHz
Transmits on 8 bands: 80, 60, 40, 30, 20, 17, 15, and 10 meters, including WARC and CB bands
CW decoder, keyer, 7 selectable DSP filter bandwidths 50 Hz to 4 kHz, and DSP noise reduction
Output power: 3 to 5 watts

What is most interesting about this new gem is its Class S final amplifier. Class S is a switching amplifier, so although efficient, it cannot be directly used as a SSB output stage which requires a less efficient linear amplifier. So how do they achieve linear SSB amplification from a switching amplifier and achieve 80% or greater efficiency? The key is in the 800-kHz sigma-delta modulator. Come by and learn the new method of generating SSB.

Bio

Ed Fong, WB6IQN, teaches RF Wireless Communications and I/O Design Fundamentals for UC Santa Cruz in Silicon Valley. He taught RF Wireless at UC Berkeley from 1998 to 2011.

Ed’s past presentations to FARS were on single-sideband modulation (January 2023), ground-independent vertical antennas (August 2019), and DMR radio (April 2018).

Raffle

Other:

We will be raffling off prizes at this meeting:

Choice of one of:
- Lenovo i5 Laptop - Windows 10; 8 GB RAM, 256 GB SSD, USB 3.0, 12.5-inch screen, 15 hours battery life, less than 3 pounds, 0.8 inches thick. PC benchmark 4,717 - very respectable. CNET rates this laptop a 4.3/5. Perfect to carry around
- * Nano VNA H4 10 kHz to 5.4 GHz, HF, VHF, UHF, 4-inch touch screen, time domain reflectometer (TDR) function, includes cables and calibration kit. Measures S parameters, standing wave ratio, phase delay, Smith charts. Use to tune antennas, duplexers, filters, and more
- Tiny Spectrum Analyzer Frequency 100KHz-350MHz, resolution 2.5KHz-640KHz. Bandpass filters for 2.6KHz-640KHz. Built in calibrated Signal generator from 100KHz-960MHz. Complete with cables, telescopic antenna, and LiOn battery
- uSDX+ QRP HF Transceiver Covers 160-6 meters – SSB, CW, digital QRP transceiver. 5 watts CW – 10 watt SSB. Built in CW decoder, full DSP noise reduction. Complete with 3000 MaH LiOn battery, AC adapter/charger, Speaker/microphone
Choice of one of:
- * ATS-20 All Mode Receiver AM/FM/SSB/CW 100KHz-30 MHz - FM Stereo Receiver
- Professional Motorola GP68 – UHF 430-470 MHz transceiver complete with charger, antenna, new battery, manual - 16 Channel UHF – preprogrammed to local UHF HAM repeaters, Mil Spec 810 – has hardware modifications for direct keypad frequency entry
- BaoFeng UV-5R x2 Dual Band VHF/UHF HT, 136-174MHz VHF (5W TX), 420-520MHz (4W TX), FM Broadcast, 128 channel memory, 1.8-Ah Li-Ion battery, drop-in smart charger
Choice of one of:
- Flashlight 800 lumens Mil spec - 800 lumen aircraft aluminum LED flashlight with 18650 3000mAh battery and AAA battery adapter
- Retekess portable radio Covers AM/FM/SW. Built in MP3 player/recorder. Great for emergencies, WWV monitoring. Built in LiOn battery
- S-Pixie 40M 180mW CW Tranceiver completed built and tested. Includes headphone, power connector for both 12v and 9v battery
- * COB lantern (Chip On Board) twice as bright as conventional LED lights

Lenovo i5 Laptop - Windows 10; 8 GB RAM, 256 GB SSD, USB 3.0, 12.5-inch screen, under 3 pounds

Nano VNA H4 Vector Network Analyzer. 10 KHz to 5.4GHz, 4in touch screen

Tiny Spectrum Analyzer Frequency 100KHz-960MHz, resolution 2.5KHz-640KHz

uSDX+ QRP HF Xcvr 160-6 meters – SSB (10W), CW (5W), digital QRP transceiver

ATS-20 All Mode Receiver AM/FM/SSB/CW 100KHz-30 MHz - FM Stereo Receiver

Professional Motorola GP68 – UHF 430-470 MHz transceiver charger, antenna, battery, and manual

BaoFeng UV-5R x2 Dual Band VHF/UHF HT

Flashlight Mil spec - 800 lumen aircraft aluminum LED flashlight, rechargable 18650 3000mAh battery

Retekess portable radio Covers AM/FM/SW. MP3 player/recorder. Great for emergencies, WWV monitoring. LiOn battery

S-Pixie 40M 180mW CW Tranceiver completed built and tested. Headphone, power 12v / 9v battery

COB lantern (Chip On Board) twice as bright as conventional LED lights

* Indicates prizes awarded.

Friday December 15, 2023 - Membership Meeting

[KK6DAC]

Raffle Winners (L-R):
??? (3rd)
Rachel, KK6DAC (1st)
Steve, K6OIK (1st, 3rd)
Jeff, AK6TG (2nd)

Bay Area Mesh – A Modern Approach to Emergency Communications

Rachel Kinoshita KK6DAC

This month’s meeting is scheduled to convene at Covington. COVID-19 Precautions apply. This meeting is also available on-line via Zoom.

This meeting is one week earlier than usual. It has been scheduled for the 3rd Friday instead of the usual 4th Friday of the month due to Christmas. Be sure to put the correct date on the calendar.

Following a major disaster amateur radio is often the only available electronics communications system. Amateur Radio Emergency Services (ARES) operators have used two-way radios to communicate and relay emergency messages using voice. In recent years, ARES organizations have wanted to supplement their voice communications with digital communications to enable passing of text and VOIP messages, images, and video.

The Bay Area Mesh (BAM) program is now implementing such a capability covering the entire Bay Area. It can be thought of as an emergency wireless Internet that uses commercial Wi-Fi devices modified to operate in bands authorized for Amateur Radio use outside of the normal Wi-Fi bands. This presentation describes the BAM program. and demonstrates the BAM system in operation. It also describe how others can participate in BAM deployment, including encouragement to do so.

Bio

Rachel Kinoshita, KK6DAC, moved from Oregon to the San Francisco Bay Area in 1989 to work for a start-up email software company and has spent most of her career working in the messaging industry.

She now spends her time fighting spam, malware, and phishing attacks. Rachel considers herself still a newbie to ham radio, having only gotten her license in early 2013. Although like many things, Rachel jumped in with both feet and soon got her general license, an HF rig and starting exploring the world in the low bands.

At the same time, she found herself working with her local Community Emergency Response Team (CERT) to help develop and shape their communications plans and policies. She also found her way to the South County ARES (SCARES) organization where she developed an interest in emergency communications.

Raffle

Other:

We will be raffling off prizes at this meeting:

Choice of one of:
- * Lenovo i5 Laptop - Windows 10; 8 GB RAM, 256 GB SSD, USB 3.0, 12.5-inch screen, 15 hours battery life, less than 3 pounds, 0.8 inches thick. PC benchmark 4,717 - very respectable. CNET rates this laptop a 4.3/5. Perfect to carry around
- DSO03D12 100 MHz dual trace scope with probes - features a built in DVM and signal generator
- Nano VNA H4 10 kHz to 5.4 GHz, HF, VHF, UHF, 4-inch touch screen, time domain reflectometer (TDR) function, includes cables and calibration kit. Measures S parameters, standing wave ratio, phase delay, Smith charts. Use to tune antennas, duplexers, filters, and more
- Tiny Spectrum Analyzer Frequency 100KHz-350MHz, resolution 2.5KHz-640KHz. Bandpass filters for 2.6KHz-640KHz. Built in calibrated Signal generator from 100KHz-960MHz. Complete with cables, telescopic antenna, and LiOn battery
- uSDX+ QRP HF Transceiver Covers 160-6 meters – SSB, CW, digital QRP transceiver. 5 watts CW – 10 watt SSB. Built in CW decoder, full DSP noise reduction. Complete with 3000 MaH LiOn battery, AC adapter/charger, Speaker/microphone
Choice of one of:
- * Professional Motorola GP68 – UHF 430-470 MHz transceiver complete with charger, antenna, new battery, manual - 16 Channel UHF – preprogrammed to local UHF HAM repeaters, Mil Spec 810 – has hardware modifications for direct keypad frequency entry
- * Diamond X-200 VHF/UHF Antenna - dual band base antenna 6dB gain VHF 9dB UHF
- BaoFeng UV-5R x2 Dual Band VHF/UHF HT, 136-174MHz VHF (5W TX), 420-520MHz (4W TX), FM Broadcast, 128 channel memory, 1.8-Ah Li-Ion battery, drop-in smart charger
Choice of one of:
- * Flashlight 800 lumens Mil spec - 800 lumen aircraft aluminum LED flashlight with 18650 3000mAh battery and AAA battery adapter
- Retekess portable radio Covers AM/FM/SW. Built in MP3 player/recorder. Great for emergencies, WWV monitoring. Built in LiOn battery
- * Energizer AA lithium batteries 8 pack
- S-Pixie 40M 180mW CW Tranceiver completed built and tested. Includes headphone, power connector for both 12v and 9v battery

Lenovo i5 Laptop - Windows 10; 8 GB RAM, 256 GB SSD, USB 3.0, 12.5-inch screen, under 3 pounds

DSO03D12 100 MHz dual trace scope with probes - features a built in DVM and signal generator

Nano VNA H4 Vector Network Analyzer. 10 KHz to 5.4GHz, 4in touch screen

Tiny Spectrum Analyzer Frequency 100KHz-960MHz, resolution 2.5KHz-640KHz

uSDX+ QRP HF Xcvr 160-6 meters – SSB (10W), CW (5W), digital QRP transceiver

Professional Motorola GP68 – UHF 430-470 MHz transceiver charger, antenna, battery, and manual

Diamond X-200 VHF/UHF Antenna - dual band base antenna 6dB gain VHF 9dB UHF

BaoFeng UV-5R x2 Dual Band VHF/UHF HT

Flashlight Mil spec - 800 lumen aircraft aluminum LED flashlight, rechargable 18650 3000mAh battery

Retekess portable radio Covers AM/FM/SW. MP3 player/recorder. Great for emergencies, WWV monitoring. LiOn battery

Energizer AA lithium batteries 8 pack

S-Pixie 40M 180mW CW Tranceiver completed built and tested. Headphone, power 12v / 9v battery

* Indicates prizes awarded.

[2022] [2023] [2024]