Tag Archives: John AE5X

The Muzen OTR: A handcrafted salute to Radio Caroline

Many thanks to SWLing Post contributor, John Harper (AE5X), who writes:

I thought you and your readers might be interested in this […] a cool little radio I learned about from the YouTube channel of a drone flyer I follow.
I like the craftsmanship:

Click here to view on YouTube.

Many thanks for sharing this, John!

I’ve actually been following the Muzen OTR for several months via Indiegogo thanks to my buddy and radio-enabler, David Korchin (K2WNW).

If the name Muzen sounds familiar, it’s likely because we featured the company last year in this post. After publishing the post, I was so interested in Muzen products, I reached out to a retailer who used to be a US distributor. Sadly, he no longer carried Muzen products, though he was a big fan.

The Muzen OTR is $69 US shipped. For an FM radio, Bluetooth, AUX-in speaker that’s handcrafted, with serious audio fidelity, in such a small size, I think it’s quite a good deal. On top of that 10% of the funding will go to Radio Caroline.

Even though I’m going through a serious down-sizing at the moment, John’s note prompted me to back this campaign, so I bit the bullet this morning and ordered a Muzen OTR. [In a sarcastic tone: “Thank’s a lot, John!”] Ha ha!

Click here to check out the Muzen OTR on Indiegogo.

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FlexRadio PowerSDR now incorporates SWLing features!

flexradio-1500Many thanks to SWLing Post contributor, John (AE5X), who writes:

Hi Thomas – I thought you might be interested to know that KE9NS has updated PowerSDR software for Flex 1500, 3000 and 5000 series radios with the following features:

  • SWL BANDS: 14 standard Shortwave Listening bands, each with their own Bandstacking memories.
  • SWL SPOTTER: SWL.CSV database file (from eibispace.de) provides over 11000 shortwave broadcast, utility, and government frequencies all displayed directly on the Panadapter. Right Click on a station to open up a google search.
  • SWL Listing screen: Displays currently operating SWL stations by Frequency and is
  • SEARCHABLE by Station Name. Left Click to go to frequency. Attempts to determine the mode (AM, DIGU, USB, CW).

Here’s a YouTube video demonstrating:

Thank you for sharing this info, John!

I know a number of Flex owners that will be happy with this added functionality. At one point in the past, I considered purchasing a Flex 1500 and using it as both a QRP transceiver and shortwave listening SDR. I’ve held off, though, mainly because so many other affordable receive-only SDRs have hit the market. Someday, I may take the plunge and add an SDR transceiver to the shack, though. Nice to know KE9NS has SWLs in mind.

Post readers: Any SWLs out there using their FlexRadio SDR for SWLing?  I’m curious if you can record spectrum and, if so, how wide the bandwidth can be set. Please comment!

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The connection between Hallicrafters and 1940s electronic warfare

A B24’s Hallicrafters S27 (Photo: AAFRadio.org)

One of my favorite ham radio blogs is that of John (AE5X). Like me, he’s a QRPer–meaning, as amateur radio operators, we love making contacts across this great globe of ours using very low power…typically 5 watts or less. The challenge is fun, the medium is magical.

John’s also a radio historian and shortwave radio listener. Yesterday, he posted a most fascinating look at how the Hallicrafters S27s played an important role during World War II countering very innovative radio guidance techniques by the Third Reich.

You should bookmark John’s blog, as he post many radio related topics that the SWL would find enjoyable, whether it be about numbers stations, QSLs or even his own experience learning Russian via shortwave.

But first, read: Hallicrafters and electronic warfare in 1940 on 10 meters. . .or, an ‘Aspirin’ for the ‘Headache’

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