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I have not done a v3, however, the differences from a v4 are mostly in the audio, so yes you should be able to. Checked on Github: https://github.com/phdlee/ubitx/releases/tag/v1.20 There are v234

columbustalley@... Several ideas come to mind: "I've assembled two uBitx v5's and was able to send and receive messages on JS8Call by putting a wire directly between the two." Whoa! Did you read

Hi, How are you mounting the antenna?? It will need to sit on a large, flat, metal surface so the base can couple to it and provide the ground plane for the antenna (normally this is done by the car

can i fit a nextion display to a v3 ubitx ? 73 pete G4HAK

thought this might be useful have a ?ubitx v3 which was working great exept mic gain was v low. had a power mic DM510U handy so wired and connected it. put a 2mfd blocking cap in series with mic

Hello everyone.? I've assembled two uBitx v5's and was able to send and receive messages on JS8Call by putting a wire directly between the two.? I'm running the newest CEC firmware.? I also have

Will definitely keep you in the loop with my progress. Were you envisioning a dynamic mic with this, or electret?? I'm planning on putting together a little electret mic driver, but then I was

/g/BITX20/files/V6_PCB_Photos/uBITX_v6_PCB.zip ^ There's a picture that was uploaded on another thread. Is that not precise enough for your needs? Reed

Hi all, does anyone know the *exact* dimensions of the v6 board incl.?protrusions (for case selection ;-)? Thanks to all! KR Alfred

Hi Rob, Yes regarding the blend control that was what I had in mind. Regarding feeding 12V to the circuit and connecting the PTT via the diode it should work fine as the Arduino sketches I have seen

John, Thanks for the schematic!? That all makes sense to me, and it matches the math in your previous post, so I appreciate putting a picture to the words. I know in the past I have connected my

Hello Rob, Replying to your first question: a mic output is generally in the 10s of mV. On top of my head I have 50mv as a typical mic input voltage for radios, so 100mv was king of a safe value for a

Hi, There are several reverse polarity schemes that can protect the radio from damage in a reverse polarity episode. That is an episode of connecting DC power source with the positive and negative

I would say the diodes you saw were to prevent any signals greater than the forward bias voltage, rather than signal routing. -- 73 Dave ADOB ( https://www.qrz.com/db/AD0B ) Raduino bracket and

I have refined my requirements a little. - The default input (enabled, even if neither PTT line is activated) is the computer line-in.? Why?? So that I can do PTT via CAT control if desired. -

John, you mentioned 100mv for the audio signals, is that ballpark for both computer audio and mic audio?? I guess I'd assumed it was around 1 V p-p or line level or somesuch.? But I haven't measured

Attached. Stop blowing stuff up… -- This email has been checked for viruses by AVG. https://www.avg.com

The fuse is there to protect the power supply in case your radio develops a short! 8-) _._

Ahem -- You can take Bill Cromwell's guidance to the bank. I used a 3amp fuse, and discarded the diode.? The way I figure it, every single power source in my house (and my zip code) has center pin

I will second Bill's assertion.? A fuse does not prevent the magic smoke from leaving your radio, though it's blowing "might" mitigate further damage if you're lucky. A fuse keeps your house or car