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U1 which is actually an 8pin LM385/6 amplifier, is not in the RF section as far as I can tell. ?It seems to be the an audio amplifier for the speaker. ?Perhaps I'm wrong, but that's what it seems to

RF stages of oscillators will show weird voltages unless the oscillator is stopped. Short X5 and take readings, I am guessing they will be fine.

All my voltages on the transistors seem to be in line with what Randy was seeing +/- a little bit due to different voltage from the power supply, but close enough to determine that they are probably

Randy, I Just got a message from a member that R136 is supposed to be set so that you get the 1 amp drive with the long hello into the mic. I assumed it was preset and never touched it. He said

For the shipping database. Ordered on 3/18/2017 Shipped on 3/22/2017 Received on 4/4/2017 Board is marked n3_722 checkmark Firing up the soldering iron right now. Can't wait to test it and play

Tim This doc was created by Randy Hall. You should join groups.io if you aren't a member /g/BITX20/attachment/21621/0/BITX40%20Voltage%20Measurments.pdf Art Sent from my iPhone

Ok, I might have found it. ?q16 is showing very low voltage on the Collector. ?The other transistors show -5 to -6 volts on the collector, Q16 shows -.718. ?So that might be something. ?BUT, Q10

Only Q7 works as an amplifier. Q8 and Q9 are emitter followers, so no gain there. -- Ion VA3NOI

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the [email protected] group. *File:* Raduino_V_1_5.pdf *Uploaded By:*

I know this! You can reprogram one of the ports to accept an i/o signal. The black wire is the likely target. In my case, I blew up the i/o port connected to the red wire. You only need to alter one

ok, something weird just popped up. ?The raduino is now stuck in calibration mode. ?The red wire is not grounded. ?I have completely removed the wire from the harness and it is stuck in calibration

Your best bet is to measure the voltages, since you are unable to remove every transistor, easily. The one with the weird voltages should be your culprit. Marco - KG5PRT

That's what it seems like, but I am measuring q16, not a capacitor. ?I guess it is possible that it is reading capacitance in the line somehow, not sure.

Sounds like you are measuring a capacitor that is slowly charging from the current placed across it by the ohmmeter.

OK, so I started testing the transistors in the radio and I got one I think might be bad. ?I want to ask your opinion. I am testing the resistance between the base and the collector / the base and

Dave, yes it puzzles me too... Fact is that it does make a tremendous difference with my BITX40 (the birdie went down from S9++++ to virtually zero). Some other builders don't notice so much

Thanks for the info offer .I am a babe in the woods with the Arduino and put the post up to see if it is feasible before I try to learn how to do it with an SD Card. As it seems it may be OK to use

I've been toying with the idea of removing the arduino and using a Raspberry Pi 3 to facilitate everything from mode/frequency changes to CAT control and internal digital programs like FLDIGI WSJTX

Can you share the code for making the function button work please.

Hopefully this may help the gurus... I have had my Raduino for less than a week and it?has the usual tuning clicks. A few days ago I suddenly realised they had gone but they were back very soon