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Hi Carl, For the uBITX schematics, the numbering is really only relevant / critical for the layout tool.? So it may not match pin numbers used in the data sheet. (the relays are an example of this)

Thanks for the reply Garry. So an easy fix with just a Diode, resistor and 2n7000. Looking at the schematic, isn’t Q74 numbered wrong? Pin two on the schematic should be pin one according to the

Sorry...let's try this again. I hate working on a phone. Dan - I live on a sail boat. A couple of meters of tinned braid tossed over the side, a shortened 40 meter vertical, and 8 Watts from my uBITX

With respect, Dan, "need" isn't an actionable or useful concept, especially in QRP land. I live on a sailboat and am currently in Tampa Bay. With a couple of meters of tinn

No. I was not aware of that. I am also licensed as a Broadcast Engineer, and we have a 100,000 watt FM station here in Pharr, TX KVMV. What I had in mind was one sideband without the other sideband

Hi Rafael, many thanks for the suggestion. I will have a look.. Art G3XNE ________________________________ Sent: Friday, March 24, 2023 07:29 To: [email protected] Subject: Re: [BITX20] uBITX V6 Hi

Speaking of class D amplifiers, are you aware of K7DDY's legal-limit AM transmitter that uses a class D amplifier? SuperSenior Amateur Legal Limit AM Transmitter k7dyy.com He offers 160/80 meter and

I have been sending Morse code now for 57 years, and I will just continue sending, but I do have one request. I would like to see you, and others, work on making a transceiver that does not require

Some people like to experiment and build stuff from scratch or buy a kit and experiment with that so that they can learn something. Not everyone wants to use 100 Watt transmitters. So there is a

20 w is -7 dB, and that is too far down. it is getting close to -10 dB down. You need to be at 50 w, and that is only -3 dB down. What I have used for low cost has been an MRF455 in an EB63A board

Your probably picking up audio through the K3 relay.? M1/M2 scheme. Fix was the Q74 2N7000 audio shunt from V4 onwards. Look at the v4,v5,v6 schematic and copy that.? R70 value also changed to 1k.

Hi, I have a V3 in a Sunil case. I’m getting very bad audio feedback through both internal and external speakers when transmitting SSB. ?I’ve tried several mics, twisting cables, grounding

With a gate input capacitance of 2800pf it must be bear to drive. I've run IRF510s at 24V and for HF 25watts is easy for only one device with two push-pull 50-55w is a safe limit.. -- Allison

David, The ND6T AGC with board designed by KitProjects has been released. Files are here and the build is reasonably quick. Gerbers and docs are at the link.

"The FET i have used is Harris IRFP 150It works great with not much heat at 35 V ." Thanks.? I'll look for that. -Ted

Art, HFSignals provides schematics, source code and more from https://www.hfsignals.com/index.php/ubitx-v6/

IRFP150

IRFP 150? Harris

Hi Sof I have not done that analysis . maybe some other guys can dive deeper. Regards Sunil vu3sua

Hi Doug The easy bitx kit version 1 and version 2 are ready. By this weekend we shall update the availability . Also we are listing the Airpal 2 band tcvr. Thanks Sunil vu3sua