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I had the same issue, however on 20m. Traced it to rf riding the coax braid back from an off center fed dipole (MFJ-2010). Solved it by grounding the shield before the radio, and placing a ferrite

Dennis Yancey ( /g/BITX20/profile/406210 ) 4:22am???#62129??( /g/BITX20/message/62129 ) I have a v4 uBitx. I just installed the SM2166 mic preamplier per

This test is NOT on a BITX board, the loss at 45MHz and 90MHz is a points for comparison of both components. This was done on a test jig I made with 2 BNCs and hooked to a SA.

Jerry, Any one wont do Jerry! has to be a shielded variety with about 2 ohms DC resistance. Changing the relays KT1/2/3 to Axicon (thanks to Mike Doty) results in reduced harmonics which reduces

https://soldersmoke.blogspot.com/2018/11/totally-absurd-farhan-being-questioned.html

A preamp can help on RX. But I suggest having a gain control. Start with a good antenna first. For the RX/TX LEDs, I have some RGBs that I will use the red and green. Have not figured out a use

Hi Just checking out the new test Front panel & test bezel for the 2.8 inch TFT display best 73 Pop VU2POP

In files section here you can find correct sized files for your lcd

Try to power Nextion from somewhere else, power bank, etc to monitor its behavior. If something happens you can focus on LCD as it may be defective

When you press the Key the display shows that you are transmitting and you hear the relay click.? In my ubitx I have a built in sound card with a usb cable for sound control. I have a dpdt switch

I have just opened a new Shop and will be selling my kits and other goodies via the site from now on. Keeping track by hand via spread sheet was getting a bit much. More zero beat kits are coming and

You might want to do some reading here or over at http://ubitx.net/ about spurs and harmonics before you start thinking about amplifiers.? When you go from a whisper to a shout small problems can

If you are going to go with the nextion the TR/RX light would be redundant. The Nextion display has a button/label that changes colors from green to red. -- N5KBP

I am working on a new larger enclosure (Desktop/Base) for my uBITX and wanted to know your must have mods/upgrades to add to the design.? I plan to include a nextion touch display and builtin power

?ha, ha!! Next time I see that elusive fella I'll be sure to tell him you appreciated the hours and hours he spent! Cheers, Gordon ________________________________ Sent: Thursday, November

Thanks!? I feel a white noise/SDR test coming on. I'm using your books - thank you for documenting your work with Winlink and ALE!? And please pass on a 'thank you' to Mr. Prepperdoc as

Well, I suspect at LEAST 2 kHz. I think mine is more like 1800 hz. Optimal is probably 2.4 kHz If you’re short on bandwidth and things aren’t working, try the 500 Hz winmor mode in that should

I've been using mine for Winlink as well.? My sloping 'S' shaped 40/20 attic dipole isn't optimum by any means, and I sometimes have to jump from station to station to get a reply, but it does move

Hi Don, I pulled the board and tested with sig gen on input and only the scope on the output.? Same huge crossover distortion.? The (simple) circuit looked OK and the + input bias was 1/2 Vcc.?

No, left open.? Had not experienced a problem before this.?? But then, there is this ;) A new board using a 741 is working great. Woody? KZ4AK --