Wrapping Up Field Day 2026

Field Day 2026 is in the books, and Carol, KE6SRN, has submitted our results to ARRL.  We earned 7626 points from our QSOs, and 2335 bonus points for a total of 9961. 

Once again, Field Day was a collaborative effort between SPARC, Pasadena Radio ClubJPL Amateur Radio Club, and the Caltech Amateur Radio Club. Dedicated members of all four clubs contributed to make this a great success. 

A special recognition goes to David, N6AN and Mark, WB6CIA who ran a 24-hour marathon on the CW key and logged 1029 contacts. 

Mark, WB6CIA pulling an all-nighter at the CW station. Photo credit: Carol, KE6SRN.

Steve, KO6DTY and Neil, N7YUY came through getting our 2 antenna trailers to the site, then had help from another handful of volunteers to get them set up. 

Steve, KO6DTY and Neil, N7YUY our muscles (antenna tower leads). Photo credit: Carol, KE6SRN.

John KK6ZVQ rounded up our VIPs, including Congresswoman Laura Friedman, members of the Glendale and South Pasadena Fire Departments, and ARRL Section Manager Diana Feinberg, AI6DF. Several media mentions helped bring members of the public to ArtCenter to learn what ham radio is all about . 

Congresswoman Laura Friedman, Representative of the 30th district of California.  Left to right: John Aboud, KK6ZVQ; Laura Friedman; Mark Seigel, W6MES; Bruce Nolte, N1BN.  Photo credit: Bruce N1BN.
Vince, KF6FLJ and Frank, K6FOD with members of the Glendale Fire Department. Photo credit: Carol, KE6SRN.

We earned all of our Bonus Points this year.  Yeah!! 

Thank you Hal KF6RRR for rounding up the Scouts, and thank you all the Station Captains and all who turned out to make it a successful 24 hours. 

Ellie from BSA Troop 5 with GOTA coach Rick KI6ZKM. This young lady is destined to be a scientist when she grows up.

Thanks also go to Mark, W6MES and Carol, KE6SRN for being our Field Day co-chairs again this year.  There are a lot of details to attend to in order to make this all happen, and Mark and Carol did a great job.

Field Day chairs Carol, KE6SRN and Mark, W6MES

Carol has created an event blog post (link below) — but please if you have any stories to share, let me know.  Carol’s favorite story is meeting eleven-year-old Scout Ellie, who told her that she wants to be a quantum physicist when she grows up.  And after working with her on her Radio Merit badge for an hour, Carol said she can go wherever her dreams take her.

Thanks again to everyone who turned up at the Art Center or worked Field Day from home.

—Tom, KE6SRO

June 2026 Meeting: Field Day and Contesting with David Hodge, N6AN

At our June meeting, SPARC members and guests discussed our preparations for Field Day 2026. Carol, KE6SRN gave a presentation about our station plan, operating objectives, and the opportunity for volunteers. The presentation slides are embedded at the bottom of this post.

Our special guest speaker was David Hodge, N6AN. David previously spoke to SPARC about his homebrew antennas for SOTA activations. As one of our most dedicated Field Day operators, David spoke about his background in radio and his evolution as a world-renowned contester. Here is a brief summary of what he shared:

David became interested in amateur radio when his convalescing brother was loaned a Hallicrafters S-38 receiver to pass the time. David showed more interest in the radio than his brother did, and consequently studied for and passed a Novice license exam in 1969, including a 5 WPM Morse code test. He upgraded to General class 18 months later (13 wpm). Traffic handling introduced him to contesters and higher speed telegraphy. Soon he was operating several contests every year. David has also participated from a number of countries on five continents. Extra class was reached in 1977 and the call AA6RX chosen. He obtained his current call sign, N6AN, in 2001, much shorter than previous calls XE1/AA6RX or WB6KJI.

There are many types of contests. The CQ World Wide DX contests are 48 hours in duration. All operators contact each other around the globe. The goal is to make as many contacts as possible in as many countries and CQ zones (there are 40) during the contest period. One class of entry is called multi-multi. A team of operators spends the 48 hours making contacts on the six bands, 160-10 meters, for as long as the bands are open, often simultaneously.

A good operator is smooth, fast, and efficient. The ability to copy even very weak signals through QRM and QRN is an important skill.

Likewise, operators in our upcoming Field Day should strive to be efficient. Start by asking “Is this frequency in use?” as a courtesy. Then, begin asking for contacts. There is little need to say “CQ,” but rather just “N6P, November Six Papa, Field Day.” You might say “Again, Again” if their call or exchange is not heard. Omit pleasantries such as “Please copy,” or “Good luck in the contest,” and treat this as message handling exchanges such as might be used in an emergency. Contesting helps train efficient operators, so come give Field Day a try.

Below is a guide prepared by Jim Marr, AA6QI that elaborates on best practices for the Field Day exchange.

Efren Batayloa, KN6YYN demonstrates his mobile radio setup.

After David’s talk, Efren Batayola, KN6YYN, shared his impressive mobile radio setup which includes both a battery and solar controller.

In lieu of a traditional meeting in July, our tradition is to march in the South Pasadena Festival of Balloons parade on July 4th. Join us on Saturday, July 4th at 10 a.m. by the South Pasadena library if you would like to participate.

Field Day 2026 Presentation

Field Day 2026: June 27 and 28

What is Field Day?

ARRL Field Day is amateur radio’s open house! Every June, more than 31,000 hams throughout North America set up temporary transmitting stations in public places to demonstrate ham radio’s science, skill, and service to our communities and our nation. It combines public service, emergency preparedness, community outreach, and technical skills all in a single event. Field Day has been an annual event since 1933, and remains the most popular event in ham radio.

For Field Day 2026, SPARC will participate in a joint operation with the Pasadena Radio Club, JPL Amateur Radio Club, and the Caltech Amateur Radio Club. Come visit us and see all that ham radio has to offer!

Start: Saturday, June 27 at 11:00 a.m.
End: Sunday, June 28 at 10:59 a.m.
Location: ArtCenter College of Design, Hillside Campus, south parking lot
Enter at 1700 Lida St., Pasadena, CA 91103
What3Words location: help.rock.vouch

Do I Need a License to Participate?

There will be a Get on the Air (GOTA) station operating from 1 p.m. to 5 p.m. on Saturday. Members of the public with no radio license are welcome to visit the station and get a taste of Field Day excitement for themselves.

We will operate under the special event call sign N6P, “November Six Papa,” as a class 4A station. The GOTA station will operate with SPARC’s call W6SPR, “Whiskey Six Sierra Papa Romeo.”

Licensed hams who are operating during Field Day from home and would like to contribute their score to the aggregate club total, note that our group name will be “PRC/SPARC/JPLARC/CITARC” this year.

Here is a summary of Field Day 2025 written by event co-chair Carol Bruegge, KE6SRN.

And here is a video produced by Bruce Nolte, N1BN.

If you have questions or want to learn more, please reach out through our contact form.

We hope to see you at ArtCenter!

Photos from Field Day 2025

Hal Frank, KF6RRR with scouts from Troop 55. Photo credit John AC6VV.
Rick Besocke KI6ZKM took out his measuring tape antenna, made at a SPARC meeting, and taught us all the technique for making a contact using a satellite repeater. We had success at 12:45 am in hearing other Southern California operators call each other via the International Space Station (ISS). Photo credit Carol KE6SRN.
State Assemblymember Mike Fong, center, visits the Field Day site.
San Gabriel Councilman Jorge Herrera Avila observes a Boy Scout radio merit badge candidate operate the GOTA station. Photo credit Graham AF6QR.
Carol Bruegge and Mark Seigel, Field Day chairs. Photo credit Graham AF6QR.

May 2026 Meeting – Testing Our 6m Antennas On the Air

Dear SPARC Members and Friends,

Thank you to everyone who attended last night’s in-person meeting of the South Pasadena Amateur Radio Club. We especially appreciate everyone who helped with setup and teardown of the tables and chairs before and after the meeting.

We were also very pleased to welcome several visitors:

  • The White family: Garrett and Ryden
  • The Sun family: Ashley, Crystal, Justin, and April

A special thank you goes to our members who made an extra effort to welcome our visitors and explain what we were doing in an accessible and engaging way for non hams. Kevin KB7JYF, Steve KN6ZOO, Mark WB6CIA, and Rick KI6ZKM all went out of their way to help make the evening enjoyable and educational for everyone.

Last night’s activities focused on our ongoing 6 meter project work and testing. Topics and demonstrations included:

  • Discussion of the 6 meter antenna builds from the prior two meetings
  • Review of the importance of testing standing wave ratio (SWR) before operating an antenna system
  • Demonstration of the RigExpert 500 MHz Antenna Analyzer
  • Testing of 6 meter simplex operation on 51.5 MHz
  • Testing of 6 meter repeater operation through the Mt. Harvard repeater (53.62 MHz, -0.5 MHz offset, PL 107.2)

We also tested several newly-built 6 meter antennas for Colleen NR6M, Vince KF6FLJ, Efren KN6YYN, and John AC6VV. All antennas performed very well, with resonance near 51.0 MHz and SWR remaining under 3.0 through approximately 53.0 MHz.

In addition, we tested several 6 meter radios provided by Jeff W2JCL, Efren KN6YYN, and Stan KR6CV.

Our attempts to use the Mt. Harvard repeater were successful, although operation was somewhat hampered by desensitization. Because the repeater input and output frequencies differ by only 500 KHz, and our transmit and receive antennas were separated by only a few feet, local interference effects were significant during testing.

Finally, everyone is invited to join next Wednesday’s simplex net on May 13 at 7:30 PM. We will:

  1. Begin on our usual 2 meter simplex frequency, 145.6 MHz
  2. Switch to 6 meter simplex on 51.5 MHz
  3. Then switch to the Mt. Harvard 6 meter repeater: 53.62 MHz, -0.5 MHz offset, PL 107.2

Please program and test the repeater settings in advance of the net if possible.

Thanks again to everyone who attended and contributed to another successful SPARC meeting.

73 de Jeff W2JCL

April 2026 Meeting: Building a 6m J-Pole, Part Two

At our April meeting, SPARC members and guests resumed building the 6m J-Pole antennas that we began in March. The final step in constructing the antenna is to tune it by shortening the resonating wire element. By taking a reading with an antenna analyzer or VNC, we were able to determine if the antenna would resonate on a particular frequency.

For reference, here is the 6m band plan as provided by the ARRL:

And here is a link to the band plan as a PDF provided by SCRRBA.

At our May 6 meeting we will conclude the build for anyone who needs additional help and use the antennas on the air.

March 2026 Meeting: Building a 6m J-Pole, Part One

SPARC holds a monthly 2m simplex net. Many of us also have 6m capability which we wish to explore. To this end we will use two club meetings to build 6m antennas, then test them following a future 2m simplex net.

In this build we will aim for low SWR in the 50.3 to 50.6 MHz region of the band. This region is designated as “all modes” in the 6-meter band plan. If you’d like to target a different area of the band, you will need to make adjustments. This is accomplished during the tuning process by lengthening or shortening the radiating element. (It will be cut on the long side, and we will trim. So “lengthening” really means “not trimming as much.”) The J-Pole design does not have a broad resonant region, so targeting your desired operating region will be necessary.

Click here for a nice online calculator for J-Poles made strictly from ladder line.

The build that we will be doing uses ladder line only for the matching section, so the calculator is somewhat off. The ladder line has a velocity factor of 0.91, while the 14-gauge silicone wire that we use for the radiating section has a velocity factor of 0.97. This means that our radiating section should be about 1.066 (0.97/0.91) times longer than the ladder line design.

This YouTube video explains a similar build:

Below is a handout featuring full instructions for the build.

At our April meeting we will tune the antenna using a mast and an analyzer.

February 2026 Meeting: APRS Gateway Services with Jeff, W2JCL

A screen onto which a projector displays the Windows program PinPoint APRS. There is a map of Southern California.
Live packets decoded by PinPoint APRS are projected onto a screen.

At our February meeting, SPARC’s vice president Jeff Liter, W2JCL gave a presentation on extra features available within APRS (the Automatic Packet Reporting System). These features are called gateway services because they are managed through computer gateways that transmit data over APRS.

WXBot is a service which sends you weather data on request. By messaging specific commands to WXBot, you can control what information the service sends back.

With APRS to SMS you can send a message to someone’s phone even when you are out of cell range. APRS carries your message via radio to a gateway and then out to the internet for delivery. In order to send a message via this gateway successfully, your recipient must opt in at the site linked above.

There are also gateway services which allow you to communicate with WhatsApp, spot yourself for SOTA activations, send short emails, or interact with your Winlink account. However, Jeff warned that the Winlink service is not user friendly.

Gateway services must use the national APRS frequency of 144.390 and transmit via AX.25 packet as opposed to protocols like VARA FM. They are run by volunteers, and many provide donation links so users can help cover the cost of their operation.

To access APRS, you need a 2m radio and a way to interface that radio with a laptop, phone, or tablet. Jeff demonstrated PinPoint APRS running on his Windows laptop with SoundModem, a software TNC. On iOS, the most common app to use is APRS.fi, and on Android it is APRSDroid.

Laptops typically require an external sound card connecting the radio and the computer. Jeff recommended the compact offerings from DigiRig for both laptop and phone/tablet use.  He demonstrated an iPad running APRS.fi which only required an audio connection to the radio because the app handled the TNC function by itself.

Below are the slides from Jeff’s presentation.

Winter Field Day 2026

SPARC members at Winter Field Day 2026

On Saturday, January 24, SPARC returned to Eddie Park for the 2026 edition of Winter Field Day. Club members had a chance to deploy antennas they had not used before and test new field operation set-ups. While most of the country suffered through bitter cold and adverse conditions, we enjoyed the lovely setting of Eddie Park and introduced ham radio to several curious passersby. We operated from approximately 10:30 a.m. to 2:45 p.m.

Total Contacts: 23
20m: 7 phone, 2 digital (JS8Call)
10m: 6 phone
2m: 8 phone

ARRL sections and RAC provinces where we made contacts on Winter Field Day 2026. Map generated by N3FJP logging software.

January 2026 Meeting — Meshtastic Update with Tom, KE6SRO

Tom, KE6SRO with a slide about Meshtastic hardware options

SPARC president Tom Bruegge, KE6SRO led our first meeting of the year and gave a presentation on how to improve the performance of our Meshtastic nodes.

Many club members who deployed Meshtastic devices last year were frustrated at their inability to connect with other SPARC nodes and the unpredictability of the local Meshtastic network. Tom explained several specific factors which influence Meshtatic’s network topography. Changing certain settings within the Meshtastic app may increase the likelihood of a good connection. But the most important factor is updating your node’s firmware to the latest version. Tom followed up his presentation with advice on the firmware update procedure:

The simplest way to do this is to go to the Meshtastic website. Once there, you can choose your device, choose the firmware version, and then flash.  If you have one of the RAK boards that we purchased as a group last year, you should choose “RAK WisBlock 4631” as your device type.  I would suggest leaving the firmware to the default of the latest stable release (which, is actually a stable beta — there never seems to be anything that they call a final release, just alpha and beta versions of the software). 

Once you’ve chosen the device and the firmware version, you can just flash the device directly from the web browser.  One caveat is that this web flasher does require that your browser be a “Chromium” based browser.  Examples are Google Chrome and Microsoft Edge browsers.  Apple’s Safari and Firefox will not work with the web flasher. 

In order to flash the device, you’ll need to connect the device to your computer using a USB cable (USB-C on the device end).  You also need to make sure that the device is in its “DFU” mode.  (I don’t know what that stands for, but basically, this is the state that the device needs to be in so that the new firmware can be uploaded.)  How this is done varies by device.  For the RAK 4631, a quick double press of the reset button after connecting the device to the computer via USB should do the trick.

Finally, it’s really important that you have a good-quality USB cable to attach the device to your computer.  I know that I tried several cables before I got one that worked well.  (Many USB cables are only useful for charging, not for data transfer.)

Tom, KE6SRO with a slide demonstrating how elevation affects Meshtastic connections.
Tom, KE6SRO with a slide demonstrating how elevation affects Meshtastic connections.

Tom concluded with an overview of MeshCore, an alternative to Meshtastic that uses different algorithms and device classes. MeshCore works on much of the same hardware as Meshtastic, including the nodes we purchased as a club last year. While the MeshCore network in our area is not as robust as Meshtastic’s, it is sufficient for experimenting and comparing performance. MeshCore also uses an app and browser-based web flasher.

Tom’s full presentation is embedded below.

Modifying the Quansheng HT to Operate CW

Note: Carol, KE6SRN demonstrated her modified Quansheng HT at SPARC’s August 2025 meeting.

In preparation for the 2025 NorCal and SoCal SOTA group camping events, several ham operators thought it would be fun to make contacts on 2m CW.  This was motivated by the recent discovery that the Quansheng radios (UV-K5 or UV-K6) could be modified to support this capability.  At the time of this writing these radios sold for $28, making 2m CW both affordable and accessible to those holding even the entry level (Technician) ham operating license class.

The modification involves first installing the new IJV2.9 firmware:
Manuale Firmware UV V2.9R5
followed by the removal of a tiny, tiny resistor and jumping two components with a 1” wire. 

This hardware modification is explained in the following YouTube video:

This video refers to a “Secret Menu.” It is accessed by turning the radio off, then pressing and holding the PTT and the side button beneath it (F1) while turning the radio back on.  Set menu item 3 to CW.

After the modification, the CW signal can be sent with by pressing the PTT button, or by using the microphone input with a key.  Only a straight key signal is accepted, but a double paddle can be used by using one paddle as a straight key.  One exception was that Mark, KD7DTS demonstrated Iambic paddle mode by use of a keyer he built for $15.  (Keying is weird. You have to send a dit before every separate transmission.  That’s a Quansheng problem not the keyer. Mark said the keyer wiring was not correct also.  He’s going to make a video.  )

This modification does not disable the original features of the radio, including FM operation.