Category Archives: Shortwave Radio

Free Advice: Stop worrying about solar minimums and just play radio!

Lately we’ve been getting some pretty dismal news about the upcoming solar cycles and the potential for a pretty dismal trend according to some researchers.

We report this news on the SWLing Post because the sun and space weather play an important role in radio signal propagation and one’s ability to snag elusive DX.

After publishing news items like this, though, I always receive a number of emails and comments stating that these trends surely marks the end of all radio fun. After all, if there are no sun spots whatsoever, why bother!?!

Truth is, it’s sort of like saying, “the weather looks lousy, I don’t think I’ll be able to have fun.”

I lived in the UK for several years. If I let the potential for lousy weather stop me from having fun, I’d have never gotten anything done!

The same goes for space weather in our radio world.

A couple weeks ago, I made a Parks On The Air (POTA) activation running 15 watts with the Elecraft KX3 into a simple 20 meter vertical in SSB mode.  Even though propagation was poor, I logged a new contact, on average, once per minute over the course of 30 minutes! It was non-stop!

The GE 7-2990A (left) and Panasonic RF-B65 (right)

I also listened to the Midwinter Broadcast to Antarctica with two portable radios. Propagation was poor and I didn’t even use an external antenna…but I caught the broadcast and had a load of fun hanging out on the Blue Ridge Parkway!

My advice?

As I said in a post last year, use the sunspot low as an excuse to explore frequencies and modes you’ve never used before. Use this as an opportunity to improve your listening skills and the most important part of your listening post or ham station–your antenna system!

I often receive email from people who’ve found the SWLing Post and take the time to write a message to me complaining about the death of shortwave radio: the lack of broadcasters, the prevalence of radio interference and the crummy propagation. They wonder, “is it all worth it?”

My reply?

“Hey…sounds like radio’s not your thing!”

While this same person is moaning and complaining, I’ll be on the radio logging South American, Asian and African broadcast stations.

I’ll be working DX with QRP power, even though everyone tells me that’s not possible right now.

I’ll be improving my skill set and trying new aspects of our vast radio world.

You see: I’ve learned that the complainers aren’t actually on the air. They gave up many moons ago because someone told them it wasn’t worth it, or they simply lost interest. That’s okay…seriously…but why waste time complaining? Go find something else that lights your fire!

While these folks are complaining, I’ll be on the air doing all of the things they tell me I can’t do.

In the words of Admiral David Farragut: “Damn the torpedoes, full speed ahead!”

Go out there and play radio!

Can you identify this Hallicrafters model onboard the Columbine III?

The Lockheed VC-121E “Columbine III” (Image Source: USAF Museum)

Many thanks to SWLing Post contributor, Robert Yowell, who writes:

I was visiting the US Air Force Museum [Friday] and walked through “Columbine III” which was the Lockheed Constellation used as Air Force One by President Eisenhower from 1954 until he left office. In the back of the cabin was a nice cozy area where this Hallicrafters receiver was installed – ostensibly for the passengers to listen to news or other events while in flight.

I am sure one of your readers will be able to identify which model it is.

Can you imagine flying in this gorgeous Lockheed VC-121E four prop aircraft and listening to HF radio from a built-in Hallicrafters set? Wow…

Thank you, Robert, for sharing these photos. The National Museum of the US Air Force is one of my favorite museums in the world. I bet I’ve visited it more than a dozen times over the past decade–always a treat and always something new to discover!

Post readers: Can you identify this Hallicrafters model?  Please comment!

The Omega + HF QRP Transceiver

Many thanks to SWLing Post contributor, Paul Evans (W4/VP9KF), who notes another affordable QRP transceiver on the market: the Omega +.

According to the Omega + website, it appears there are three configurations/versions:

  • 1 band – basic (up to 30 MHz)
  • 2 bands (50 / 70 MHz)
  • 10 bands (160/80/60/40/30/20/17/15/12/10m)

Notes, Specifications and Features

The following details were lifted from this product page and reference the 10 band version of the Omega + (translated from Polish via Google Translate).

Omega + – 10 band QRP transceiver with installed S-meter, power meter, CW monitor and standard quartz filter.

Transceiver fully launched by producers Lukasza SQ7BFS and Pawla SP7NJ.

The front and rear TRX wall in military color, the remaining part of the housing black (in the picture is presented the whole black version).

Rx [MHz]: 0.100 – 72.000
Tx [MHz]:

  • 1.800-2.000
  • 3.500-3.800
  • 5.100-5.500
  • 7.000-7.200
  • 10.100-10.150
  • 14.000-14.350
  • 18.068-18.168
  • 21.000-21.450
  • 24.890-24.990
  • 28.000-30.000

Modes:

  • USB
  • LSB
  • CWU
  • CWL

Antenna connector: SO-239
Working temperature range: -10 ° C to + 50 ° C;
Power supply: 11 – 14V DC
Power consumption

  • Tx Max. Power: 1.6A
  • Rx: 0.26A

Dimensions: (W × H × D) 120x40x180 mm
Weight (approx.): 800g
Output power: (at 13.8V DC)> 6W
Sensitivity: 0.16?V

Package includes:

  • Omega + 10 band transceiver in a black-green (military) enclosure
  • microphone
  • power cord
  • adapter for an external speaker

The listed price is 1,200 Poland zloty (roughly $321 US).

Videos

The Omega + in the WARD Contest 2017:

Click here to view on YouTube.

Here’s a video showing how (impressively) strong the Omega + chassis is:

Click here to view on YouTube.

For more product details, check out the Omega + website.

Our Polish-speaking readers may be able to add more details or clarify/correct anything above that may not have been correctly translated. Please feel free to comment!

Again, Paul, many thanks for the tip!


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Bill recommends Slow Scan Radio

Many thanks to SWLing Post contributor, Bill Hemphill (WD9EQD), who writes:

I have enjoyed listening to Scow Scan Radio SWL Program.

I used a WebSDR to receive it.

http://www.slowscanradio.com/

But it has been off the air for the past weeks due to some minor health issues. The program was interesting in that besides Slow Scan photos, he also did other digital modes using FLDigi.

Some of the test included multiple digital signals in the same waterfall.

When I went to website today to check to see if there were any updates on when it might return to the air, I discovered that he is doing a podcast: Daily Minutes Podcast. Following is podcast feed:

https://dmpodcast.net/feed/

This podcast is a combination of new items as well as some re-runs of earlier Show Scan Radio programs. They also are a combination of English & Dutch. The June 13 & 14 podcasts are about off-shore radio. Very interesting and enjoyable.

The Jun 12 & 14 podcasts include a re-run of an earlier Slow Scan Radio Show in the last thirty minutes of the podcast.

[The screen shot at the top of the page is a] sample of the start of the digital portion.

Very cool! Thank you for sharing this, Bill!

The lab599 Discovery TX-500 ruggedized portable QRP transceiver

Many thanks to SWLing Post contributor, Vlad, who shares some images and a video of a new QRP transceiver in development: the Discovery TX-500 by a company called lab599.

Specifications have not been published yet, but we have confirmed a few details from the manufacturer:

  • 10 watts PEP
  • HF plus 6 meters
  • Weight 570 grams (1.25 pounds)
  • Voltage 9 – 14 VDC
  • 105 milliamps at 13.8 VDC and with backlit display on
  • CAT control via USB and using Kenwood codes
  • I/Q outputs
  • Weatherized
  • Expected availability autumn 2019
  • Target retail price is $700 US
  • Product website is forthcoming

All of the following images came from the Discovery TX-500 gallery on Instagram:

Here are a few videos:

Click here to view on Instagram.

Click here to view on Instagram.

Click here to view on Instagram.

For someone, like me, who loves playing radio in the field (Parks On The Air and Summits On The Air) this looks like an ideal rig. It’s one of the only ham radio transceivers I’ve seen that is weatherized to some degree (how much, we don’t know yet).

I don’t see a speaker on the TX-500, so I’m guessing it might require a mic/speaker combo or an external speaker of some sort? I also don’t see a built-in ATU, but at $700, I certainly wouldn’t expect one.

With a power consumption of 110 milliamps at 13.8 VDC, this little transceiver should run for ages on a modest battery pack.

This is certainly a fascinating prototype QRP transceiver. If the Discovery TX-500 transceiver can be produced and marketed at $700 with all of the features mentioned so far, it should certainly fly off the shelves. They can certainly take my money!

Of course, I will plan to grab one of these for review. I’m also eager to see how this little SDR transceiver might perform on the broadcast bands.

We will post post TX-500 updates and details as they become available. Bookmark the tag Discovery TX-500 and stay tuned!


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2019 BBC Midwinter Broadcast: Comparing the Panasonic RF-B65 and GE 7-2990A

The GE 7-2990A (left) and Panasonic RF-B65 (right)

This has been a very crazy and radio-active weekend!

It started with a busy Friday that was capped off with the BBC Midwinter Broadcast and then continued into Saturday with a Parks On The Air activation and  Field Day at Mount Mitchell State Park.

In short: it’s been a lot of fun!

I’ll plan to give a short report of Field Day later–it was one to remember–but first let’s talk about the 2019 BBC Midwinter Broadcast to Antarctica…

To the field!

The Midwinter Broadcast has never been an easy catch here in North America–after all, the BBC aim their signals to Antarctica–but I always manage to receive the program with only a portable and I’m almost always travelling on the day of the broadcast.

This year, I was actually at home and could have used one of my SDRs at home to snag the broadcast, but it’s become a bit of a tradition to listen in the field, so that’s what I did.

Knowing how difficult it would be to receive the broadcast–especially given the poor propagation–I reached for one of my “Holy Grail” portables: the Panasonic RF-B65.

The Panny RF-B65 is a portable DX hound!

I never take only one radio to the field, though, so I decided it was time to give the hefty GE 7-2990A a little outdoor time on the Blue Ridge Parkway.

The GE 7-2990A

I’ve only had the GE 7-2990A for a few months. It came from the estate of my dear friend Michael Pool (The Professor) who passed away earlier this year.

This particular radio has quite an amazing history–remind me to share the story someday–but I’ll always cherish the 7-2990A because it was one of Michael’s favorites.

I knew the GE was one of Michael’s favorite mediumwave receivers, but I wasn’t sure how well it would perform on the shortwaves. Turns out, it’s quite an amazing HF receiver!

Out of the the three Midwinter Broadcast frequencies (5875, 7360, and 9455 kHz), I could receive the 7,360 kHz signal from Ascension Island best.

Here’s a short (informal) comparison video:

Click here to view on YouTube.

I was quite surprised with the 7-2990A’s ability to pluck this weak signal from the ether. Although the video doesn’t do it justice, the GE’s excellent audio fidelity made listening more enjoyable compared with the much smaller RF-B65.

Click here to view on YouTube.

And, yes, that’s my faithful brown and white listening companion, Hazel, in the background. In truth, she was less interested in the broadcast and more interested in finding squirrels!

Your Midwinter recordings–stay tuned!

Halley VI Research Station on the Brunt Ice Shelf in Antarctica (Source: British Antarctic Survey)

I’ve already received about twenty emails from SWLing Post readers with audio and video recordings of the Midwinter Broadcast. Thank you!

If you would like to submit your recording, and you haven’t yet, please do so by email (thomas *at* swling.com) so I don’t overlook it. Remember to link to your video so that I can easily embed it on the upcoming post. Please don’t send me duplicate emails as it makes the sorting process more difficult.

I’ll try to find recordings linked via Twitter and Facebook, but it’s much more difficult to sort those in comments and know for sure that I’ve discovered them all.

Please note that, due to my schedule, it will likely be two weeks before the final post is published. I appreciate your patience and understanding!


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A protective case for the Tecsun PL-680, PL-660, and similar portables

Many thanks to SWLing Post contributor, Mark Hirst, who writes:

It seems the world is full of containers that are serendipitously sized for radios and other treasured possessions.

Unfortunately, this tip is probably only helpful to UK based readers of the SWLing Post.

WH Smiths, high street stationer and purveyors of newspapers and magazines, infamous for their high prices and poor service, were doing a clearance sale in my neighbourhood.

I spotted a £3 semi-rigid pencil case that looked like it might fit my new PL-680, and when I got it home, found that it was a great fit.

I cut out the internal flap that holds the pens with scissors, and the result speaks for itself.

Wow! That’s a brilliant case for for the PL-680, Mark! That exterior color will also ensure you never lose it in the wild. Thanks for sharing this tip. What a fabulous bargain at £3!  Post readers in the UK, take note!