Author Archives: Thomas

Many thanks to SWLing Post contributor, Ed, who writes:

The new 6-part Netflix series ‘The Spy’ about the Mossad agent Eli Cohen (played by Sacha Baron Cohen) who infiltrated Syrian military intelligence from 1962-1965 dramatizes his careless use of QRP HF CW transmissions in Damascus, which were DF’d to track him down.

SWLing Post readers might find the series interesting, especially segments depicting Mossad’s use of covert QRP HF CW transmissions.

Radio-savvy viewers will find unintended humor in the use of a transistor AM radio circuit board, tiny batteries, and no antenna(!) to send CW messages from Damascus to Israel–and in the comical depiction of a Soviet/Syrian radio HF DF van. You’d think a TV series with star power could’ve found a willing ham or film crew member to lend some basic technical expertise.

Links:

https://www.netflix.com/title/80178151

https://www.jpost.com/Israel/Eli-Cohens-radio-operator-Spy-determined-Israels-destiny

https://aawsat.com/english/home/article/1909526/exclusive-10-factual-errors-committed-%E2%80%98-spy%E2%80%99-series-eli-cohen

Thanks for sharing, Ed! I’m sure this is a great series. And, yes, I suppose this wouldn’t be the first time the movie industry made an attempt at authenticity but fell just a little short! Since that’s such a key part of the film (no pun intended!), you would think they could have consulted an expert to make the setup authentic while preserving the integrity of the scene.

ABC’s review of shortwave broadcasting released

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Many thanks to SWLing Post contributor, Michael Bird, who shares a link to RadioInfo that summarizes the recently-released “Review of Australian Broadcasting Services in the Asia Pacific” by the ABC. Micheal notes:

So what do we take from this report? No recommendations. The status quo continues although there were many respondents who would favour [shortwave radio’s] return:

“There are no formal recommendations for action, only a finding that the Government “clarify the objectives of its Asia Pacific broadcasts… in achieving Australia’s broader strategic policy objectives, as well as the target audiences for those broadcasts.”

Click here to read the full article at RadioInfo.

Click here to download the full report [PDF].

Tecsun PL-990 and H-501 may be the last high-end shortwave portables from Tecsun

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Many thanks to SWLing Post contributor from China, Mei Tao, who writes:

I would like to share the latest news about Tecsun’s New Products: the PL-990 and H-501.

These day I found that several Chinese BCLers who received the PL990 or H501 one after another–they posted many a detailed pictures of these two radios. Lots of my friends asked me when they could buy these two radios on the market.

Then I asked the Tecsun’s boss, Mr Liang.

He replied that they had begun to supply the PL-990 and H-501, but there were only a quantity of 300 in the first batch. These radios were first supplied to the subscribers who pre-ordered PL-990 or H-501 in October. Therefore other customers would have to wait for the second or the third batch. As for the foreign BCLers, I believe the wait time will be longer.

In addition, there is a bit of bad news: Mr Liang told me that PL-990 and H-501 were the last products he led the team to design, and they were his last masterpieces. In other words, the PL-990 and H-501 may be Tecsun’s last high-end portable and desktop radios. What a pity!

Thank you for sharing this, Mei Tao. Yes, that would be a pity indeed if the PL-990 and H-501 end up being the last high-end portables from Tecsun. I suppose it’s not surprising, though, as I’m sure some of the demand for shortwave radios is on the decline at the same time so many inexpensive DSP-based portables are saturating the market.

Two years ago I heard from a reliable source that Tecsun might be pulling the plug on their high-end portables, so I was quite surprised when I saw the PL-990 and H-501 announcements earlier this year. I suppose these models could be a “last hurrah” and certainly a way to mark the PRC’s 70th anniversary (as we’ve seen on some of the radios’ promotional material).

Regardless, I’m looking forward to reviewing both of these radios. Frankly, I’m quite happy a few hundred production models are in the hands of enthusiasts in China. Hopefully early adopters have given critical feedback to Tecsun so that when the first major production run is exported, the units will have been well-vetted and solid performers.

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Ivan tests the SDRplay RSPdx’s HDR mode

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Many thanks to SWLing Post contributor, Ivan (NO2CW), who writes:

The new RSPdx has what they call “High Dynamic Range: (HDR) mode below 2 mHz. I tested a day after receiving the new unit by turning HDR mode on and off. It seemed to make quite a difference when receiving Non Directional Beacons.

As far as Medium Wave itself, I did see some difference but it was harder to make conclusions there as propagation of weak signals on medium wave can change up and down in the course of a minute and some additional testing on Medium Wave will be done in the future. Overall for anyone interested in the world below 2 mHz HDR mode is definitely something to explore!

My video is here:

Thank you for sharing, Ivan!

Modifying a Degen DE1103 DSP for longwave/VLF?

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Many thanks to SWLing Post contributor, Jiri Kaplan, who writes:

Is it possible to modify the new (DSP) DEGEN DE1103 for VLF reception?

Like before, the old Degen version (without DSP), see these videos:

I wonder if instead of the DE1103 I should buy the PL-660 or PL-680?
I think DSP is worse and the old version can no longer unfortunately be purchased.
My main concern is good selectivity and sensitivity, I live in the city, there are many strong signals.

Thank you for your question, Jiri.

I’m certain you can’t use the same modification of the original DE1103 on the DSP version to achieve VLF reception. In fact, unless the DSP chip itself can be hacked, I imagine modding the DSP DE1103 for VLF would be quite difficult.

I hope more knowledgeable SWLing Post readers can comment with a definitive answer.

Regarding the choice between the DE1103 DSP and the PL–660 or PL-680? I wouldn’t hesitate to grab either Tecsun receiver over the DE1103 DSP. Check out my short review of the DE1103 DSP for more info about this particular model’s shortcomings.

You’re right about finding the original DE1103. I did create this eBay link that should help filter out the DSP models from the search results. At time of posting, there were no listings.