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Rebuilding a KL-703 that has IR branded MS1307's. One of the PushPull circuits got wiped out due to a solder ball that shorted a Drain & Gate. I have RM3's but they don't match. I can't source any that look the same. The Chinese stuff is all rebranded. I will try to get a picture of the...

Posting for a friend who went SDR and is selling off some of his ham gear. He prefers local pickup. https://sanantonio.craigslist.org/ele/d/san-antonio-ham-radio-equipment/7784111785.html

Posting this for a friend in San Antonio who is looking to unload his 2 year old original owner 2547. Everything works as designed. He just doesn't like it, but you may. https://sanantonio.craigslist.org/ele/d/san-antonio-galaxy-channel-ssb-am/7786007194.html If this violates forum policy, let...

ATM, I just have a quick & dirty Imax 2000 up at 25' with no grounding or ground plane and about S5 ambient noise floor. I know I can do a lot of things to lower/eliminate it - but that's not the point of this post. I was Googling QRM elimination and ran across a software program that uses AI...

Putting this here because I couldn't find it anywhere. The KL-703 has a high input impedance when run on "high". Mine was showing 1.5 SWR on the low end of the band and 1.6 SWR on the high end. It is hard to read the schematic but it appears to be using a SMD 120pf to ground before the input...

What size standard (50v) SMD's are used in the latest Qixiang Radios? 0402, 0603, or 0805? Thanks

Looking for a LW, MW, and SW Digital receiver that has AM/FM/USB/LSB/AGC/DSP/adj. audio BW filter & freq. step/LI-ion battery and is less than $50. Bonuses would be a built in switchable attenuator, auto scan, memories, 10Hz tuning step (for SSB), Freq. calibration, separate AM/FM antenna...

Anyone have experience installing these? Can't find any real installation procedures here or on the net. Don't want to waste hardline trying to figure it out if someone has already been there and done that. If you have a link, please share...

Anyone know what it is? Mine is missing and I don't see a value mentioned anywhere.

I generally use a very fine sand paper (1000+ grit) or emory cloth when I can get to it. If it is hard to reach, then a jeweler's straight slot screw driver with a sharp tip. I haven't found a chemical solution that I would risk using. Looking for a better solution if it exists. Something...

Let me help you get rid of that clutter. Shoot me a PM if you have one you are willing to part with. Thanks, Dr_DX

Let me help you get rid of that clutter. Shoot me a PM if you have one you are willing to part with. Thanks, Dr_DX

I have seen so much misinformation about this topic here and elsewhere on the web, that I felt compelled to make this post. I hope AT-6666/SS 9900 owners will be able to use this information to successfully wire ANY microphone to their radio. Whether it will sound good or not, is another...

Got a question about whether you should or should not ground elevated omnidirectional antennas (that aren't designed to use the mast as part of the antenna). Copying Bob85's signature: W8JI "An antenna with a poor ground using few radials cannot have a support mast grounded to the radial...

https://www.ebay.com/itm/DC-DC-Converter-LTC3780-High-Power-Automatic-Step-UP-Down-Power-Module/353193914841 If so, how dirty is it?

Has anyone done one?

If you have a spare one laying around, I'll make it worth your while. Send PM. Thanks, Dr_DX

Hi All, I was wondering if someone could identify a base for me. Here is a pic of it: You can see the ham has a base that consists of 3 large pins that are set in concrete. In this picture they are setting it up high. I want to set it down low with just the threads and nuts above the...

WTB - Sams CB-276 or a copy. Thanks, Dr_DX

Anyone know what the filter spec's are of Lou's CHG? I need to build a 7.8 version for a 858. Thanks, Dr_DX