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So Mark and I are having the exact same no receive problem. I've reprogrammed my nano thinking maybe something was amiss but that didn't help. Mark replaced his 5351 board including the nano with a

Thanks Dr Fred. I have never messed with the raduino. Changing a sketch scares me. I do need to learn more about how to read the file/sketch save the file and modify the file. Maybe I didn't explain

You might look here: ??/g/BITX20/message/22764 ( /g/BITX20/message/22764 ) and maybe here: ??/g/BITX20/message/21027 (

I just completed my BIT40X and can only get about 1 Watt of RF out. I turned the bias adjust pot fully clockwise and read a current of about 200 ma from the power supply. The instructions say it

I just uploaded: PurdumRotaryEncodersRevisited.doc and PurdumEncoderArticle.doc? which are the rotary encoder articles I wrote for QRP Quarterly. Perhaps those will help. Jack, W8TEE To:

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:* PurdumRotaryEncodersRevisited.doc *Uploaded By:*

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:* PurdumEncoderArticle.doc *Uploaded By:* Jack

I finally got the high side vfo code working by removing c91, c92. I found if left in place the vfo did not work above ~10MHz. So if anyone is planning on using the commented out USB code in the

I am very confused. I find several sketches and many references to using an encoder for tuning. Is there a set of complete instructions for installing an encoder (where to hook it up to which raduino

I need to explain. I have a TBI, that sometimes causes me to need something reexplained in a different way. Also I have cerebral palsy, so my son would be building the kit for me. I haven't the

inexpensive...simply.....yet very functional......mostly great fun!!!!

Dr Fankinstein would be proud KD8CGH <rkayakr@...> wrote:

Craig, you would need greater resolution when you want the tuning range to cover the entire 40m band (instead of just a 50kHz segment). currently: single turn pot => 300 degrees rotation => 1000

I figured out the problem. ?I had the Sparkfun board selected. ?It is fixed now and your fixes to the sketch worked to get the calibration corrected.

Good afternoon Michael, Much easier to do it in the sketch. With your method the switch has to be a break before make or you stand a chance of creating a short if the pot is at the +5 volt end and

Brian Lewis, I replaced the SI5351 board that has the Raduino on it with one from another BITX40. ?It is now receiving. ?I've got some 25mHz crystals coming and I'll see if mine is bad. ?Also in

I use a separate switch DPDT ON-OFF-ON switch. In one position you feed 12V to both the main board and the final, in the other on position I feed 19.8 volts to the final and 12 volts to the board as

!!!!!!?? It's alive !!!! It was a burned trace. I traced the voltage and saw 13.7 at L8 and 7-9 at T7.? I soldered a jumper on the back of the board from L8 to T7 pin 6 and now I have 13.7 volts

Adding momentary switches to both ends of the potentiometer would be a simple and frugal alternative to holding the pot at either 0 or 10k ohms. Another approach would be to use a rotary encoder and

But that's the fun part! And then you can get an audio and signal report. Win-win! Jonathan - KK6RPX