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Thank you. Regards. Max K 4 O D S. I've Never Lost the Wonder. Antique Electronics Site: <http://www.angelfire.com/electronic/funwithtubes/> http://www.angelfire.com/electronic/funwithtubes/ Sent:

Very nice documentation. Does raise a sort loosely related question. If the switch bridging the PA power to the general power is opened, how does the user control PA power. Does it matter if PA power

Please post the files, Thanks, Paul-K2AYZ

Hi all, Nice work Tom!, I wonder If this mod to the filter does at some point an impedance mismatch?? There is a way to change center frequency from 200hz to 750hz?? 73! De LU1MAW

Tom, Just tug your defective meters probe wires holding the probes and do the same at the meter end. These wires fray and probably that why you got low readings. Raj

PROBLEM SOLVED! Well, actually two problems... initial problem was with voltmeter...? it was providing erroneous readings.? Once I swapped to newer voltmeter I was getting better measurements.?

The Q6 is fine. Now that you have 12.5 on the R66 mic preamp side, you should also get that coltage on one side of R60 as they are connected together. I suspect a bad solder or a cut track between

I would also like to order an AGC and a click kit. Don. KI7TTX

Support? You think the uBITx is supported? This is right off the HFSignals webside as indicates the limit of support: " This program is distributed in the hope that it will be useful, but WITHOUT ANY

I haven't looked at Ian's code yet. But suspect it is plenty readable. And if it's readable, there's a bunch of people here that could support it. And I doubt Farhan would ship with it unless he was

OK, I _think_ I improve the image a bit. I put the CAD file and the image on the site as well. Accessible from the assembly page. W7PEA

During PTT I get 1.6V on the emitter, 2.2V on the base and 11V on the collector.? I'm getting supply voltage(13VDC) on one side of R66 and 12.5VDC on the side with C64.

On TX there should be large voltage on both side of R66 if not then maybe a relay fault or faulty Q6. Check all the voltages around Q6. Raj

If CEC firmware is selected to be the delivered "base" then you must think about the following two implications: 1. Is Ian willing to support the "base" in the future w.r.t. uBITX production hardware

That is partially correct. In my keyer code I use the spare pin too. So converting my code to work with one pin is not as simple as changing one #define. rOn

Yes... the microphone case is ground...? blue wire is going to ground and continuity checks good to ground everywhere as best I can tell.? Even the metal part of the microphone shows dead short to

I love the red, can you send code faster with the red case? ;-) W7PEA

Tim When I write software I don't have reuse as part of my mindset. I try to make something work that is broken or develop something new that does not exist. Once it is tested it is given to the

Check the mic polarity. One of the leads behind the capsule is connected to the body and that is ground Check if there is 12v is on the mic transistor stage when you press ptt. Raj

Hey Max... care to add some comments to describe this circuit for newer folks. Do so here...? /g/BITX20/wiki/uBITX-Reverse-Polarity-Protection