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Thanks Doug. ? I thought that most of the parts looked like 1206, but I do see a few smaller (obviously 0805). Cheers Michael VE3WMB

In Laymans terms would someone please explain the calibration setup for my ubitx on factory firmware?? My bfo was out and after checking with various AM stations like CRI and RRI, noticed it was off

Thanks to All!! The Radio is on the shelf, a fuse holder and several irf510(s) are ordered, and my other radio is up to bat. lol. Good lessons learned about replacing displays, re-working arduino

Ok!? A 40 watt bulb lit!? I am using a end feed half wave.? It had been working great but I will recheck for storm damage (we have had daily storms for a week or so.) Yes the audio out is working

Receiver overload.? There is no AGC in these.? TO my ear the CW sounded a bit hard. Try tuning in a really weak signal. It could be the audio amp.... V3 or V4? Allison

Simpson 260 there are many? variations of that model all woth it and easy to get repaired. The biggest advantage is measuring current, the old analog meters have less voltage drop. Another is the

Per this post /g/BITX20/message/48729? Ashhar Farhan May 11???( /g/BITX20/message/48729 ) I tried to keep all resistors and capacitors to 1206. However, some of

Bill, The list is not a direct replacement list each has differences. If you replace the failed device replace both with the same vendors IRF510. (BUY TWO).? IF they charge more than 1.50$ each its

Hi, They are 0805 SMD. Peter Paul Fox G8HAV Mid-Cheshire Amateur Radio Society 5 Llandovery Close Winsford Cheshire CW7 1NA Group Controller Dane Valley RAYNET Tel: 01606553401 (H) Tel: 07919315547

I have ordered mine from www.Robotshop.com two 3.2 inch Enhanced version and one 7 inch basic - all good. Joe VE1BWV

Does anyone know off-hand what size the surface mount caps and resistors are that are on the uBITX board ?? Are they 1206 ?? Michael VE3WMB

A second even easier idea, are you positive you are still getting audio from your computer (or whatever) into the radio?? Connect the audio line going into your radio to a speaker and make sure you

All good advise but something else to think about...? The WS in WSJT is weak signal.? K1JT has brewed up such strong magic that people have reported decoding signals without any antenna attached at

I was in middle of a wspr transmission. Had done several within the hour. Possibly didn’t wait long enough for pa to cool. I don’t know.? Had contact on 20 with good signal report earlier.

I used to use a 40 watt incandescent bulb with my old novice 6146 crystal oscillator, that can work. Though be aware of this statement?"Tungsten-filament incandescent lamps exhibit a very-high

Just replacing the IRF-510 devices may not be enough. Something caused the failure. Was it an intermittent antenna connection that drove SWR too high? Or was it a power spike that punched through

They go back before that. I have 2. One bought new around 1990 and one that I got when my dad died. Not sure how old that one is but I know he had it in the 1950's. Both seem to be with in spec

Howard, I asked before and could not find my answer as it probably got lost somewhere in the myriad pages of this forum. WHere can I find your address? Maybe you could send me an email at

Hi! There is also overload on weak signals Tried Q70 mod: that didnt help, still distortion Tryed several speakers and several headphones: the same Tried two different ubitx units: no change, same

With the symptoms described there is a microscopic chance it’s something other than a shorted MOSFET. You might want to consider replacing both final transistors. Whatever killed the one that is