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ONX: I should have been more clear. There is a LM7805 regulator in a large TO-220 case that sticks out from the "Raduino" board attached to the back of the LCD display. Solder a 100nF from each of

I haven’t solved this issue yet. I attached a ground wire to my EFHW antenna, and that didn’t help. I pulled the lm386 chip out and it looked fine and I put it back in. I don’t have any other

First thing to try is to bypass each terminal of the 5-volt regulator on the Arduino board to ground with two 100nF.? (The regulator will oscillate and induce the broadcast images.) Second, you may

Raj, Iz, Jonas, Ashar thank you for reply, nice to hear from you all.? I wouldn't be asking if I had a spectrum analyzer to make the measurement! I do have the relay board from Gordon installed, my

Same to the group Cheers Ed N7SNT Oregon, USA

Thanks Jack! [email protected]> wrote:

SEASONS GREETINGS TO YOU ALL.Dave G0AYD.

Hi Gavin, Is this issue resolved ? I also have similar problem. Not sure what is the resolution. ( I have talked about it in a different post) I am from Bangalore / India and I have a uBitx v3 running

Jim: See attached...I think that's what you need. The libraries are specified as part of the #include preprocessor directives and a quick glance showed nothing outside the standard IDE

Hi Friends, I am a new Ham from Bangalore India. I had purchased a uBitx in Jan 2018 from HF Signals.? But I had not assembled it. I recently assembled the uBitx and observed it has TDA 2822 problem.

The key is to do the math. Here is how it works, consider transmitting at 14 mhz. To generate 14 mhz, we mix the 45mz if with 59 mhz local oscillator. Now, we see a spur at 31 mhz. As we tune up and

To address the spurious the Farhan LC filter make more sense. I noticed (on an SDR receiver) the spurs were actually reduced. I know you have tried that and seemed to make no difference. I would

Hi Curt, I've done that mod on my v3, and I cannot see any difference in the spuriouses/harmonics on any band on the spectrum analyzer. I haven't replaced the relays yet so I don't know if that makes

Curt, Change the relays first.. Raj

I sold the kit, board and parts. Thanks for all who responded. I sent private messages to each respondent. Many thanks, Jim W3BH

I am curious if anyone is getting compliant SSB spurious on the upper bands by only replacing these inductors with small shielded SMT ones as I just have?? It may be a while before I get to measure

N7XG, Try to increase the brightness of Nextion display to 100% and check. I hope that helps. Anthony VU3JVX

Vic WA4THR, After I am happy with the tuning for the radio with the BFO value and other setting, I do use Memory manager to create hex file backup only. However, I never had much luck tuning the BFO

Oh ok I see the website was design to work it that way. Hmm...

Farhan sir, I am not sure why visiting the following site https://www.hfsignals.com/index.php/bfo-tuning-aid ( https://www.hfsignals.com/index.php/bfo-tuning-aid/ ) is trying to access the microphone