Staying the Course: W9IMS Stages its Second Special Event of the Month, Celebrating the Indy 500

By Brian D. Smith, W9IND

It’s back to the track for amateur radio station W9IMS. Less than 2 weeks after concluding their first special event of the year, members of the Indianapolis Motor Speedway Amateur Radio Club will take to the airwaves from now through Sunday, May 24, to commemorate the legendary Indianapolis 500. 

If you already worked or tuned in W9IMS during the initial event, the IndyCar Grand Prix, this is your chance to snare the second of three contacts required for the 2026 Checkered Flag Award. To earn this certificate, radio amateurs must contact all three W9IMS events in the same year (SWLs may substitute reception reports). The third special event, honoring the NASCAR Brickyard 400, will fire up from July 20-26.

Even if you missed the Grand Prix, you’re still eligible for a colorful and collectible QSL card marking the 110th running of the Indy 500. The current operation is slated to conclude at 11:59 p.m. Sunday, May 25 (Indy time) or 0359 UTC Monday, May 26.

Tips on finding W9IMS:

  1. Check DX Summit (www.dxsummit.fi) for spots listing the current frequency or frequencies of W9IMS. You can customize your search by typing “W9IMS” in the box at upper right. 
  2. Go to the W9IMS page on QRZ.com (short cut: www.w9ims.com) and look for the heading, “2026 Operating Schedule.” The Indianapolis 500 link opens into a weeklong schedule of individual operators and their reserved time slots. Although the special event can be activated at any time throughout Race Week, your odds of snaring the station improve dramatically during hours with a listed op.
  3. Look for the Indy 500 station on 20 and 40 meters – on or near 14.245 and 7.245 MHz – and there’s a bonus band if you plan to attend the race or be in the Indianapolis area on Race Day. Each year on the morning of the 500, W9IMS operates simplex FM on 146.52 MHz, working hams situated in the grandstands and the infield of the track, as well as those en route or residing in the local area.
  4. Remember that the published schedule can be shortened by adverse circumstances, such as local thunderstorms, solar flares, and a lack of calling stations. Don’t wait till the final hour to hunt W9IMS!
  5. However, radio amateurs who still haven’t worked W9IMS by Sunday may benefit from the policy changes that usually kick in at the end of Race Week. W9IMS ops tend to start calling for “only stations that have not worked this event” and may switch to contest-style operations, exchanging only signal reports to put more contacts in the log.
  6. Keep in mind that both hams and SWLs are eligible for QSL cards and the certificate. So if you’re unable to work W9IMS by Sunday night, you can create a reception report by copying down details of other contacts – such as date, frequency, UTC, and the callsigns of a few stations you heard W9IMS working. SWL reports count as credits too, but the certificate will likely feature your name instead of your call. 
  7. If you succeed in bagging W9IMS, congratulations! The station website (www.w9ims.com) contains everything you’ll need to know about obtaining your QSL cards and certificate. 

Hams: If you can hear W9IMS but can’t complete a QSO in the waning minutes of the special event, don’t give up. You can still create an SWL report by jotting down the details of other W9IMS contacts – including frequency, UTC, a signal report and the callsigns of several stations that you heard W9IMS contact. A valid report satisfies the requirements for a Grand Prix QSL card and the first of three credits for a certificate. SWL certificates feature operators’ names instead of callsigns but are otherwise indistinguishable from awards issued to amateur radio operators.

Remember to stay on your toes once the Grand Prix operation is over – the Indy 500 special event begins only nine days later!

Carlos’ Illustrated Radio Listening Report and Recording of Vatican Radio (May 18, 2026)

Many thanks to SWLing Post contributor and noted political cartoonist, Carlos Latuff, who shares the following illustrated radio listening report of a recent Vatican Radio broadcast.


Carlos notes:

11.5 million people threatened by famine in Sudan, Vatican Radio, 11870 kHz

Click here to view on YouTube.

Mysteries of shortwave and soul

Hi to all SWLing Post community. Here’s news of what Imaginary Stations will be bringing to those shortwave transmitter sites this week coming.

Thanks to the services of Shortwave Gold we have a few programmes this week coming. The first show is WMMR – Mystery Mix Radio. As usual, the show has a theme that you the short-wave listener, will have to guess what it is. There’ll be a special e-QSL for the lucky winner, and as ever, we will not give any clues away here (even on the flyer above), the clues are in the show. Tune in and play some guessing games via the shortwaves.

The schedule for the show is on Saturday 23rd May at 1100 hrs UTC on 6160 kHz and then again on Sunday 24th May at 0900/1300 UTC on 6160 kHz and 2000 hrs on 3975 kHz/6160 kHz. Hoist up your antenna and tune in!

Then on Monday 25th May at 20:00 UTC on 3975 kHz/6160 kHz, we have the repeat of “Skybird Soul on Shortwave 2”. There’s more wonderful examples of Soul and Soul inspired tunes on this special Monday night slot.

On WRMI on Wednesday 27th May 2026 at 0200 UTC on 9395 kHz we have The Ancient Analogue Archive, where DJ Frederick selects and picks all sorts of genres from out of the archives. Tune in and be surprised yet again.

For more information on all our shows, please write to us at [email protected] and check out our old shows at our Mixcloud page here.

FastRadioBurst23

BBC Looks Back at the First Shortwave Transatlantic Link

Marconi watching associates raising the kite (a “Levitor” by B.F.S. Baden-Powell[47]) used to lift the antenna at St. John’s, Newfoundland, December 1901 (via Wikipedia)

Many thanks to SWLing Post contributor Markku (VA3MK), for sharing this BBC article marking the centenary of the world’s first shortwave transatlantic telecommunication link between Canada and Somerset, England. Among other things, this article also highlights the historic Marconi Beam Wireless Station at Bridgwater and the challenges of early shortwave radio experimentation. Read the full article here: BBC:  Pioneering’ message that changed the world

A Quick Hamvention Travel Note

I wanted to give SWLing Post readers a quick heads-up that I’ll be traveling this week and attending Dayton Hamvention along with Four Days in May. Because of travel and a very full schedule, I’ll likely be slower than usual replying to emails and may also post less frequently over the next week as free time will be extremely limited.

Many thanks in advance for your patience and understanding!

If you’re attending Hamvention as well, please feel free to stop by and say hello. You can find details about where I’ll be here: Heading to Dayton Hamvention and Four Days in May

73/72,

Thomas (K4SWL)

From Compactrons to Nuvistors: Vacuum Tubes’ Last Hurrah

Many thanks to SWLing Post contributor Dennis Dura, who shares this article from Hackaday that explores the fascinating “last gasp” innovations of vacuum tube technology long after transistors had already begun taking over the electronics industry. The article dives into late-era tube developments like compactrons, lighthouse tubes, and RCA’s remarkable nuvistor—tiny, rugged, low-noise tubes that pushed thermionic technology to its limits in applications ranging from military gear to high-end audio and RF equipment. It’s a terrific read.

Click here to read: The Vacuum Tube’s Last Stand(s)

Carlos’ Illustrated Radio Listening Report and Recording of BBC Afrique (May 10, 2026)

Many thanks to SWLing Post contributor and noted political cartoonist, Carlos Latuff, who shares the following illustrated radio listening report of a recent BBC broadcast.


Carlos notes:

Emmanuel Macron in Kenya: “We are the true pan-africanists”. BBC Afrique, 15490 kHz”

Click here to view on YouTube.