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All, Got an email from DHL - uBITX kit is scheduled to arrive this Friday! Looking forward to putting it together and trying it out. Am fantasizing making it remote controlled - over the network.

Hi Pierre, Updating the code in the spot mentioned will alert you when you go out of band (however you define it), but won't prevent you from transmitting out of band. It shouldn't be too difficult to

Thanks, Perfectly clear now. 73 Dave ADOB ( https://www.qrz.com/db/AD0B ) Raduino bracket and Ham_Made_Keys ( http://veloliner.com/ham/k0mbtkey.pdf )

Thanks for the help. Came to the realization that long press means very long press, press and hold until value stored and menu changed. Also, thanks for the link to the manual, and for the great work.

M1 M2 M3 M4 (as you show on left) are the screw hole ground pads on the PCB. Not the same as the audio nodes M1 M2 that are routed to the K3 relay. Rgds, Gary

It reduces the gain and thus instabilities at low frequencies.

Those points go to the TR relay located on the left lower portion of the schematic if i remember right (am at work and can't look it up) John

Hello all. There has been one small part of the schematic that has always confused me What role does M1? and M2 play. It looks like they are grounded yet that would not make sense. As the radio

I am thinking instability. That leads to oscillations that can kill the device. Rick Campbell had some nice design articles in QST on this. Others may be out there. Curt

I just discovered this link today and am enjoying its study. Refering to ubitxv6/bands.cpp at master · reedbn/ubitxv6 (github.com) ( https://github.com/reedbn/ubitxv6/blob/master/bands.cpp ) lines 19

Hello everybody. I have a version 3 of the uBitx. Is the negative feedback in the finals necessary or at least useful for the stability of the push-pull amplifier? I have seen the 26db 10w amplifier

thanks for all reply, i will try to put some ferrite to try to stop this RF, 73 de IW0HK Andrea

That's great news. I can't wait. 73 Owen Vk5fkov

Hi Jerry, I just realized the manual wasn't linked in the readme.md in the code, so I've added that link now (thanks for the nudge, Jim S). For your reference:

Andrea, I too have had that problem and RF was getting into my UBITX from the key paddle. I used some small diameter coax and a snap on ferrite to solve my issue. Good luck Barry K3bo

Indeed. That's why I always stuck with grounded grid for my tube amps. Much more stable. When I first ordered the uBITX ( impatiently waiting... ) I thought of doing a single-sweep-tube amp for it, or

do aim for stability and cleanness over raw power - and keep in mind this simple math: each time you increase power 4X this is 6 dB, and roughly it is one S-unit.? if we start with 10 watts, 40 watts

Jerry, KF6VB, Ooooh, an excellent opportunity for the QRP operator. Stuff a slingshot, a motorcycle battery, some magnet wire, and that new uBitx into a daypack, head on up that hill. That sort of

Hi Jerry, There's no compile-time requirements to use the favorites. To set a favorite, tune to the frequency you want to save, then short press the star icon, and finally long press the desired

Short and long press works as for me.? Works with a press of the favorite on the screen button, or the encoder wheel function button. There are only 4 favorites. Rgds, Gary