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I have this issue too, when The volume is down there is a buzz. It goes away a little when i turn volume half way, then comes back when i turn volume to max. Joe KD2NFC

No, but raduinos posted for sale here have moved very quickly. ? -- www.bitxmap.com ( http://www.bitxmap.com )

is it possible to buy a uBitx without the Raduino? -- 72 and God bless KD4EPG

Here is a way to improvement the audio on the uBitx V5, connect a 10 micro F cap to the LM386 + to pin1 - to pin 8. solder to C75. This will give a bit more gain, and bass. Philip G7JUR

uBitX complete with V3 board, original in the box, untouched, unmodified kit, including the?original?V3 board, unmodified, and all components that shipped with the kit. Also included a complete

John visibility appreciated.? it should behave like most v4's.? here is what I suggest -- take some CW data.? as its a different path, we found in measuring dozens of rigs that we tend to get

Raj, ok mni tnx for your reply :-) Farhan, also mni tnx for your reply :-) Okay, that'll be the first thing I'll check. But I didn't made any changes before - the drive pot is untouched so

I guess it could have been worse, I could have types 50MV :-) This is a v3 that I finally got around to playing with a couple of months ago. It had been in the

Iz with these numbers I would speak softer into the microphone and be just fine.? important to see if they correspond to 'full' output power, if so I think most of us would be thrilled with them.?

Indeed, they seem almost good results, especially on the 15m band, which was the most critical for spurs. Which version of ubitx do you have? If you use an ordinary (high - pass) tuner, you should be

John info appreciated.? I don't think you are likely using 50 volts audio -- maybe 50 mV ?? There may be more variation in the audio gain than RF perhaps.? I suggest you watch the output power as

I set up to do some SSB testing getting putting about 50Vpp in. I don't know if I read the right peaks or not, but I looked for the strongest signal that wasn't a harmonic. Don't

For those trying to follow the conversation, it started in this other thread: ? ??/g/BITX20/topic/30204401 Karl's adio had been working well as an SSB transmitter, but after trying

On v5, the drive pot should be set to half-way. This prevents overloading of the PA chain. If you overload the PA, it clips the top end of audio while amplifying the carrier. This results in low

....and he fare (sic) prefers Linux.? ?

Jerry, I have the v3 board as do you.? I bought 10 diodes from Mouser and installed a replacement (twice) this afternoon.? No improvement and still have the unsuprressed carrier.? I also heated up

https://www.thingiverse.com/thing:3548104

thats a great idea as regards just a front panel wonder if youd care to let us know ashar. regards Dave G0AYD Bitx owner 2 X V 3 and 1 x V4.. wrote:

One other thing: The MAX232 is just a logic level converter, between RS232 voltages and TTL/CMOS logic levels The underlying UART protocol remains the same. The UART protocol could be described in a

Yes it is printed. Never tried putting anything into the files section.