Category Archives: Videos

Many thanks to @LondonShortwave, on Twitter, who made a video showing how to use a GarageBand plugin to filter noise out of shortwave audio in real time. He describes this on his YouTube channel:

“I recently discovered a Mac AudioUnit plugin called Soniqware SG-1 that allows real-time noise filtering based on a brief noise sample (sometimes referred to as the “noise profile” or the “noise fingerprint”). This video shows it being applied to shortwave radio signals, which I believe is a first, as I have been unable to find anyone else who has already done it. In a number of cases, it turns laborious DXing into armchair listening.

The antenna used in these experiments is a Wellbrook ALA1530SP-1 and is positioned indoors. More information is contained in the first few seconds of the video.”

Click here to watch the video on YouTube.

Note that GarageBand is an application only available on the Mac OS X platform. Fortunately, it comes free with every new Apple computer purchase. You can find the Soniqware SG-1 spectral noise gate plugin by clicking here.

Be sure to follow @LondonShortwave on Twitter: http://twitter.com/LondonShortwave

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Video: Ken operates his Hallicrafter S-120 for the first time

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In response to our last post regarding Hallicrafters’ promotional 45 RPM record, Ken Carr comments:

“I got the entire promotional kit for the [Hallicrafters] S120 when I was a kid. My parents even bought the radio for me. I still have everything, including the record. How could you not want to get into SWL after listening to it?

My dad took an 8mm film of me using the new radio. I have since digitized it.”

Ken then kindly shared his video (which can also be viewed on YouTube):

Thanks for sharing, Ken! This stuff is priceless.

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The Amazing World of Short Wave Listening: Hallicrafters 45 RPM

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(Source: WW2E on QRZ.com)

SWLing Post reader, Michael Black, remembers the Hallicrafters 45 RPM promotional record in a comment:

“All this talk of early listening, especially when it’s about the same period I joined in, reminds me of the Hallicrafter’s 45RPM record that was used as a promotional tool. Send 25cents, get the record back, and hear what you could hear with a shortwave receiver.

I don’t think I ever had a copy. But I did some searching, and it’s apparently available in multiple places on the internet. I won’t add a link because I’m not sure which one would be most reliable. But a search on “hallicrafter 45rpm” gave results.

One site pointed out that the average listener would not have been able to hear much of what was on the record. But that too represents the image of the time. My Hallicrafters S-120A had a horrible sliderule dial, but endless space to mark exotic places like “Antarctica” and things like “aeronautical mobile”. The receiver was awful, you’d have a hard time hearing much other than the strongest of sw broadcast signals, but going into the hobby, some of that marketing was what made it exotic. For those of us who were young at the time, it wasn’t just about this new world of shortwave, in some ways it was about “this new world” that was beyond our world that wasn’t much bigger than school. Antarctica wasn’t just exotic because you might be able to hear it on shortwave, it was an exotic place to begin with.”

I took Michael’s advice and searched the term, “Hallicrafter 45RPM” and found this YouTube video. Enjoy:

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Forcing the Tecsun PL-880 to use an external antenna on MW/LW

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For those of you who aren’t satisfied with the PL-880’s internal ferrite antenna for mediumwave and longwave reception, here is a video explaining a work-around that will force the PL-880 to use an external antenna on those bands:

Many thanks to YouTube user pesnyaozemle for posting this video and to SWLing Post reader Jon for sharing.

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Video: PL-880 soft muting on SSB

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Many on the PL-880 Yahoo Group have been reporting “soft mute” or “noise gate” audio jumps that are heard when the PL-880 is tuned to a weak SSB signal.

SWLing Post reader, Tim, has a Tecsun PL-880 with firmware version 8819 (mine is 8820) that exhibits this soft mute behavior. Check out the following video where he uses the built-in attenuator to force the PL-880 to engage the soft mute. Tim notes that the sound quality of his $30 camera phone is poor, but I can still easily hear what’s happening:

There have even been confirmed reports of SSB soft muting in PL-880s with 8820 firmware. With that said, I have now spent hours trying to force my PL-880 to engage soft muting in SSB, but to no avail. My SSB copy is solid, regardless of signal strength, noise level, or adjacent signals (at 5, 10 or 15 kHz and much closer)–no muting at all in SSB.

While I’m very pleased with my PL-880, I would encourage many readers to consider waiting a couple of months before making the purchase. Many of the PL-880 early adopters have felt a bit like Beta testers–admittedly, I’ve felt this way as well–but with time, I imagine many of the 880 quirks will be ironed-out by Tecsun.

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