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Hi, is the 330pf across the PA transformer mod all what is needed to get reasonable output (5w) on 28mhz or should I also make the Farhan mods ( Replace C81 from 0.1uf to 470pf Replace R83 from 10

Just use some hear shrink to increase the shaft dia..

Tell that to varidur.? Reverse protection diodes are cheap insurance.

Thanks for your reply.. I've already swap the leads of the electret mic. But the same thing is happened. What voltage suppose the capacitor showed exactly? is there any limitation on how big the

I got a bit frustrated finding a knob to fit the 6mm knobs on the uBitx.? Fortunately I found these adapter sleeves to bring the shaft OD up to 1/4 inch so I can use standard American 1/4 shaft

This reference suggests silicon diodes generally fail with a short when subjected to over-voltage. And generally fail with an open when subjected to too much current. ?

Generally silicon diodes will fail with a short circuit, protecting the hardware.

I just want to say that I'm very happy to see you take this on! Jerry

Tom: If we are talking about the VFO/TFT board, look for the place where we read the encoder. If this is the BITX code, look for the symbolic constant ENCODERTUNING around line 1720. At line 1729, you

Cuz sheet metal work is not as much fun as burning solder. Shielding various sections of the radio from each other is not a bad idea. And the Raduino/display is a good place to start. Allowing the

You could actually have different Nanos for different overall functions and just swap them out since it would be pluggable. 73 Kees K5BCQ

yes and other mods as well.? For now its at best a partial fix. FYI the IRF510s will deliver 10W and then some at 10M! Allison

Why not remote it some from the mainboard and put a box around the back of it with the wires sneaking out of? it.? The front of the box is the front panel and the Raduino is tinned up.? Take care

Just to let those know that sent me prepaid envelopes, I was away for the last 2 weeks, and will send out the parts tomorrow for the requests that I received during my absence. Howard

Haven't tried that specific one but I have an Rpi with a 7" TFT with touch.? Power required i s about that of the Rpi.? But it looks good and is really nice to use. However using it with a Raduino

We would like to socket the Nano, but then the standard display doesn't fit, If we extend the pins to make it fit, then we may have to redo our enclosure to give the display some extra room. Here's a

Here is where i'm at... This is experiments 101, interim progress. While waiting for parts, used whats on hand: Made Q90 a 2n2369A smt part, Better gain bandwith product (ft) gain maintains at higher

I was wondering if you would share your hmi file.? I am thinking of trying the Nextion display and would appreciate a starting place for the display. What model are you using? I was thinking? of

Thanks! Joe VE1BWV

There was a thread a few months back... /g/BITX20/topic/9607885 ( http://www.bitxmap.com )