Tag Archives: RFI

Dave says not all Jameco power supplies are linear and regulated

Many thanks to SWLing Post contributor, Dave Zantow (N9EWO), who replies to a post published yesterday regarding some of Jameco linear power supplies. Dave writes: “A bit of a caveat on Jameco’s these so called Linear power supplies. This is … Continue reading

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How to replace a noisy wall power supply

Regarding noisy switching power supplies, SWLing Post reader, Dan Lewis, comments: “Google the following: “Jameco linear wall transformer”, and you’ll find a suitable non-switching replacement. Jameco still has a number of linear transformers in their catalog at reasonable prices. I … Continue reading

Posted in AM, Articles, How To, News, Portable Radio, Radios, Shortwave Radio, Tutorials | Tagged , , , , , , , , , | 5 Comments

Sangean blames AM interference on power supply and government regulation

After the Sangean WR-15 received low marks for AM reception in an Amazon review, Bob of Sangean America replied that poor reception is due to the radio’s switching power supply–a design that is federally mandated. Many thanks to Jeff over at the … Continue reading

Posted in AM, Manufacturers, News, Radios | Tagged , , , , , , | 17 Comments

Holiday Sale: Pixel Shielded Magnetic Loop RF PRO-1B

Doug Talely, from Pixel Antennas, writes: We are running a Holiday Special on our highly regarded RF PRO-1B Shielded magnetic loop antenna system, between now and the end of December. The normal price for this antenna system is $499.99 but … Continue reading

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Fire at Radio France building in Paris

Many thanks to SWLing Post reader, @K7al_L3afta, for sharing news that the top floors of the Radio France broadcasting house were on fire this morning: @SWLingDotCom @LondonShortwave fire in Radio France!! pic.twitter.com/EWoIWsyLEq — ????? ????????? (@K7al_L3afta) October 31, 2014 You … Continue reading

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Living in a National Radio Quiet Zone

Many thanks to SWLing Post reader, Paul, who shares this National Geographic video about Green Bank, West Virginia, USA–home of the National Radio Astronomy Observatory (NRAO): My wife and I took a camping trip to Green Bank in the late 1990s … Continue reading

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Frugal SWLing: Investing little, but getting a lot out of your radio

This article originally appeared in the April 2014 issue of The Spectrum Monitor Magazine. Let’s face it: SWLers and amateur radio operators are some of the most frugal hobbyists out there.  But the good news is that radio is a hobby … Continue reading

Posted in Articles, How To, News, Radios, Shortwave Radio, Tutorials | Tagged , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , | 10 Comments