Hi, Maybe check the firmware and make sure there's a delay between switching the relays and enabling TX RF? -a

No, I bought a ts-430s cheap because it was broken on transmit and it turned out the finals were shot - one of the finals transistors was a dead short - and a resistor got 13.8V 20A through it. It did

#ubitx-help #ubitx40help

Hey, I set fire to the first radio I repaired. So... -adrian (kk6vqk)

#ubitx-help #ubitx40help

It sounds like an internal spur. Do you have the same thing on any other radios in that room? -a

Hi, So if that's the case, how about wrapping the power into the bitx40 through a couple of ferrites? it sounds like you're picking up RFI on the power cable itself and it's making it into the rig. -a

I did mine by using an audio spectrum analyser and a noise source (ie, my QTH.) Once I had tuned the VFO up "enough" using my test kit and frequency counter I calibrated the BFO oscillator by looking

#v5 #calibration

Heh, hit me up privately (adrian.chadd@...) - I'll give you a radio for your club. :) -a (kk6vqk)

Yeah, hit me up. I'm local to you (east oakland) and can help you get a HF transceiver. -adrian

I'm sure someone else mentioned but - that could just be RF leaking back into the amplifier output path or speaker. If you hook it up to a dummy load do you get the same effect? That'll help identify

Hi! I highly recommend doing it using a sound card microphone input. That way you can adjust the passband using something like fldigi to monitor the noise floor in the passband. -adrian

It's likely divided by four so the s curve entries can be bytes (1024/4 = 256), rather than 10 bit entries. -a

hi! Thanks! I'm worried about the minimum input voltage across the 12v regulator though. It's solar, so sometimes it's going to drop below 14v. I'll go hunt around and see if I can find a regulator th

hi! Which version? v4? -a

#ubitx #ubitx-help

hi! I have just fixed up a bitx40 for a friend. I've loaded it with the firmware compiled from https://github.com/amunters/bitx40 and done all of the mods I can find for both that firmware and general

is replacing that resistor a common mod for the bitx40? -a

hi! ok, what kind of swings should we be seeing for the volume input into the AGC versus the S meter? That way I can check it at the same time I get data for you. Sorry, this was on the project list a

i mean, i could always mod the v4 radio to match the v3/v5. Why'd they change value and change back? -a

Which mod did you use to even up the bands? -a

I haven't had a chance to poke at the ubitx v4 lately. I'm fixing up a bitx40 for a friend and I'm almost done with that! -a

.... how'd you get it to tx on 160? :) -a