Many thanks to SWLing Post contributor, David Iurescia (LW4DAF), who writes:
Here you have a new video from Radio Prague “A visit to Czech Radio”.
Enjoy!!!
A short video tour of Czech Radio
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Category Archives: Videos
TX Factor Episode 21
(Source TX Factor)
Welcome to our latest episode!
We hope you like the new theme tune!
In this early summer episode we look at programming your DMR handie and running a SharkRF openSPOT digital radio IP gateway. We review the new Icom IC-7610 transceiver, and Mike visits Bob’s shack in Cornwall to learn more about operating through linear satellites.
In our free-to-enter draw, there’s a chance to win two great amateur radio-related items. How about a Prism protective dust cover for your rig and a copy of Andrew Barron ZL3DW’s bookAmsats and Hamsats? Click here!
Click here to view Episode 21 on TX Factor’s website, or click here to watch on YouTube.
Thanks team for yet another excellent and informative episode, TX Factor!
Thomas (N1SPY): How to chase Cubesats with an RTL-SDR dongle and some wire
Many thanks to Ivan (NO2CW) who writes:
Thomas, N1SPY used equipment worth $25 to chase mini satellites. Includes instructions for making a simple circularly polarized antenna. Did it work? Check for yourself!
Click here to view on YouTube.
Thanks, Ivan, for passing along another excellent project by Thomas (N1SPY). I love how simple this project is to put together and the fact that most SWLing Post readers, for example, likely have all of the components already! Great job, Thomas!
Dean records Voice of Korea’s Panmunjon Summit coverage
Front page of the North Korean newspaper “Rodong” on April 28, 2018. (Source: Mark Fahey)
Many thanks to SWLing Post contributor, Dean Denton–our intrepid 13 year old DXer. Dean writes:
How are you doing? I have found a recording on the archives of a recent North Korean recording of the Voice of Korea on the Panmunjon Summit, between both North and South Korean leaders.
Not only am I pleased with the news, but I have uploaded the full 1 hour recording of the English broadcast on my YouTube Channel:
Click here to view on YouTube.
Click here to check out Dean’s YouTube channel.
Great job snagging this particular VOK recording! You’re following a long tradition of SWLs before you who’ve made an effort to capture these fascinating bits of radio history. Keep up the great work, Dean!
Ivan performs two tests with the AirSpy HF+
Many thanks to SWLing Post contributor, Ivan Cholakov (NO2CW), who shares the following:
Thomas, there has been a lot of discussions regarding Airspy HF+ ever since it came out – heated exchanges regarding comparisons with peers, modifications and firmware updates.
I took my Airspy HF+ and conducted two tests with it:
Airspy HF+ vs. SDRPlay RSP-1A on HF and Medium Wave
Click here to view on YouTube.
Since I could not completely equalize the audio levels, I think it’s good to look at the peak to valley ratios on the display rather than the audio volume.
Airspy HF+ with the R3 mod on and off:
Click here to view on YouTube.
This comparison used SDR #. It may be helpful to run the same comparison on SDR Console V3. I may do that at a later time.
Both tests used W6LVP’s portable amplified receiving loop antenna in a noisy suburban backyard in Florida.
Many thanks, Ivan, for sharing these comparison tests! I agree with you that it’s most helpful to look closely at the peak to valley ratios on the spectrum display rather than using the audio levels as a measure.
VOK shifts broadcast schedule due to North Korea time zone change
Many thanks to SWLing Post contributor, DanH, who writes:
I put up a couple of videos on my “Willow Slough DX” YouTube channel nine hours ago that may rate at least an Arte Johnson (Laugh-in) “verrry interestink”. These are two videos of the North Korean shortwave station Voice of Korea operating with their new time zone and on their new schedule.
These are the two most recent videos of SW station receptions that I have posted during the last couple of days.
[The first video] is the VOK shortwave sign-on recorded at the newly scheduled time of 04:00, May 5, 2018 UTC on 15180 kHz. Distance: 5600 miles. Receiver: Sangean ATS-909X. Antenna: suburban 83m horizontal loop. Receiver location: Davis, California, USA. North Korea has changed its time zone to match UTC +9 which is used by South Korea. I was accustomed to tuning in Voice of Korea at 38 minutes past the scheduled hour for the English language news. Now I tune in at 8 minutes past the same hour. VOK broadcasts that were scheduled for 04:30 UTC now begin at 04:00 UTC. At the time I write this VOK shortwave programs listed on Short-Wave.info still show the old times:
Click here to view on YouTube.
[The second video] is the VOK shortwave newscast at the new time of 04:08, May 5, 2018 UTC on 15180 kHz. Some interference is heard half way through the clip:
Click here to view on YouTube.
Thanks for sharing this, Dan! It never crossed my mind that VOK would change their international broadcast time based on the fact they shifted their country’s time zone. From a North Korean perspective, though, I suppose this makes sense. Thanks for the tip!
Click here to check out other recordings on Dan’s YouTube Channel.
Hand Made Vacuum Tubes by Claude Paillard
This is an amazing video – hand-made vacuum tubes! About 17 minutes long – well worth the watching if you have any interest at all in old equipment!
Enjoy!
Robert Gulley, AK3Q, is the author of this post and a regular contributor to the SWLing Post. Robert also blogs at All Things Radio.