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Those two daughter boards especially with those long wires are a sure way of inviting RF pickup especially being so near the LPFs relays. It could be that the boards are picking RF directly by being

IC. https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F122586871489 Is the one like above OK? Thanks in advance, Ralph. // hiro, JJ1FXF 2018/06/30 2:19、Ralph Mowery

Make sure the ground is a healthy healthy healthy connection as well, either a chassis or some pretty thick wires and lots of them, arrange so they all connect at some point called single point

That's apart from Gordon's suggestion

Try RG58 for the supply.

You may just get by with a 2 amp supply, but I would go with at least one rated for 3 or 4 amps. It is always to have a few more amps than needed so the supply runs cool.

Sprinkle 0.1 ufd capacitors from supply lines to ground. They’re cheap, and they’re great!

The issue discussed in the 'RFI from uBitx TX after AGC and other mods installed' thread appears to be caused by RF getting into the 12v supply and from there into the 5v supply that feeds the AGC

The photo is of a 5" touch screen (resistive) display (7" is an option) and the processor is the Teensy 3.6. Al (AC8GY) and I are working to finish the JackAl board for everything. I posted a

Thanks, R.E. Yes, I read about the power supply in different thread. If I am correct, ubitx works properly with 12V 2A power supply, right? Let me at first carefully find the one at AKIHABARA where is

I haven't experienced any noise problems.? I still must shorten some wires and think about a final mounting arrangement. -- Jon Titus, KZ1G Herriman, UT USA

Very nice, Jack.? Have you described your setup?? I'm interested in the type of display and processor board, and the software. -- Jon Titus, KZ1G Herriman, UT USA

I used a plastic cutting board and some pieces of single sided copper clad board mounted with "L" brackets as a temporary "enclosure" to mount the board and controls ?so that I can play with mods and

Arv, Appreciated for your comments and pointers of details. Certainly let me try some mods you advised after I set up my ubitx as it is. I am not a hardware guy and so need a little more time to

Nice...any more pictures?? Jack, W8TEE

Yes, Bill. As far as I know, the distortion issue comes up with only v4 ubitx, however it’s just a matter of degree. I already placed my order with DHL, while taking a train back home today! :) I

Good rundown on warnings. Fortunately we haven't had a new idealistic programmer decide to set the?-Werror complier flag yet. That was great fun unleashed at the worst possible moment. Tom, wb6b

Hi raj, again many thanks for your kindleness and help. I am appriciate this very much and Hope for succesful repair. When my bitx was still working I developed a combination of agc and rx muting to

Don, Just checked, feedback is affected by level of volume control. More with higher volume, quits with volume all the way down, mike unplugged, or plugged in, also with audio coming from the computer

Hiro The distortion issue seems to be more related to audio level and impedance and quality of the attached speaker. Layout of the uBITX-4 audio output section allows one to make changes like changing