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Channel: Radio Modifications – The SWLing Post
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Mr. Carlson restores and repairs a Hammarlund HQ-140-X

Many thanks to SWLing Post contributor, Moshe, who writes: Hi Thomas! You must see this restoration job from Mr. Carlson’s lab: Click here to view on YouTube. Thank you for sharing this video, Moshe!...

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Guest Post: The Story And Restoration Of My Hallicrafters SX-42

Many thanks to SWLing Post contributor, Arthur Smith, who shares the following guest post: The Story And Restoration Of My Hallicrafters SX-42 by Arthur Smith As a junior high student way back in...

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Tecsun PL-660 Hidden Feature: FM Calibration

Many thanks to SWLing Post contributor, Rick B, who writes: I just thought I’d share with you a hidden function I discovered documented on the web for the Tecsun PL-660. It’s how to calibrate the FM...

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Schematic for the PLL EDUTEC 4-Band Digital Radio Weltempfänger?

Many thanks to SWLing Post contributor, Cezar Vener, who writes with the following inquiry: I would like to ask you if you can help me with a schematic diagram for an EDUTEC 4-Band digital radio (PLL...

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How to fix the Grundig S350DL’s mechanical tuning drift problem

The S350DL may look like a digital radio, but it’s actually analog inside and tuning is prone to drift. Many thanks to SWLing Post contributor, Ed, who noted my comments about the Grundig S350DL’s...

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Tecsun PL-680: Rolf touts enhanced performance using PL-660 mod

Many thanks to SWLing Post contributor, Rolf Snijder, who writes: I have made the same modification to the Tecsun PL-680, that was done [by many on the] PL-660 earlier. The PL-680 is now a great...

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Tecsun PL-300 series modification: disabling soft mute

Many thanks to SWLing Post contributor, Troy Riedel, who shares the following tip. Troy writes: While surfing the Net I found the following procedure that is said to “disable soft muting in Tecsun...

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Rolf’s PL-680 modification allows external antenna on LW and MW

The Tecsun PL-680 Many thanks to SWLing Post contributor, Rolf Snijder, who writes: I did a modification today on the Tecsun PL-680 [which allows for an] external antenna on LW and MW. The internal...

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Tecsun PL-880 hidden feature/hack: 1 kHz bandwidth on shortwave

Many thanks to SWLing Post contributor, Guillermo, who writes: I own the PL-880 and just discovered a new feature : a 1.0 kHz bandwidth mode on shortwave (SW only not in MW). The procedure to get it...

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Rolf’s LED backlight mod for Sony ICF-SW35

Many thanks to SWLing Post contributor, Rolf Snijder, who writes: This is a simple LED backlight modification for the Sony ICF-SW35. Simply add a 120K resistor and a bright LED: Overview of resistor...

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XHDATA D-808 modification to allow an external mediumwave antenna

Many thanks to SWLing Post contributor, Rolf Snijder, who writes: I have added an external antenna capability for mediumwave on the XHData D-808. Simply add a 27 pF capacitor on the backside of the...

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Pacific Island Results from Gary DeBock’s Hawaii Ultralight DXpedition

Clearing the southern coastline of Maui en route to the Big Island. (Photo by Gary DeBock) Many thanks to SWLing Post contributor and intrepid Ultralight DXer, Gary DeBock, who shares this DXpedition...

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Rolf’s Sony ICF-SW35 mod removes the beep sound

Many thanks to SWLing Post contributor, Rolf Snijder, who shares the following modification for the Sony ICF-SW35. The mod is very simple: remove one capacitor. Rolf shows the capacitor location on...

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Doctor Vlado repairs the Panasonic RF-2200 (Part 1)

Last year, at Hamvention, I picked up a Panasonic RF-2200 for $70. It came with the original box, manual and was in superb cosmetic condition. The seller told me that over the years he exclusively...

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A $25 upgrade for the Elecraft KX2

Many of you know I’m quite a fan of the Elecraft KX2. I take this little transceiver along almost any time I travel. Not only is it a full-featured ham radio transceiver, but it’s also an exceptional...

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Video: How to calibrate the Tecsun PL-660 frequency offset

Many thanks to SWLing Post contributor, Mike Mander, who writes: I’ve recently really been enjoying swling.com. Thanks for having such a great resource online with shortwave radio and hardware...

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The AirSpy HF+ R3 bypass modification

After SWling Post contributor, Guy Atkins, posted the survey results of his excellent Elad FDM-S2  vs AirSpy HF+ weak signal comparison, I received a few questions about the AirSpy HF+  “R3 Bypass”...

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Gary pulls apart and examines the XHDATA D-808

Many thanks to SWLing Post contributor, Gary DeBock, who shares the following report of the XHDATA D-808: XHDATA D-808 AM-LW-FM-SW-AIR Portable- Tech Report by Gary DeBock The XHDATA D-808 portable is...

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Kenwood R-2000: Luke’s simple fix for a frozen encoder

Many thanks to SWLing Post contributor, Luke Perry, who writes: Hi Thomas, I thought I would share with the people on the SWLing Post my new radio purchase. I needed a receiver with a noise blanker as...

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Guest Post: A DSP Hi-Fi “Stupid Radio Trick”

Many thanks to SWLing Post contributor, TomL, who shares the following guest post: Stupid Radio Trick – DSP “Hi-Fi” by TomL If you can remember the 1960’s, there was an audiophile rage going on called...

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