Is it a Problem with the BFO circuit ? .. Ide have a look here ..
On Sat, 18 Feb 2017 at 21:21, Mark Underkofler
<mark@...> wrote:
I built a BITX40.? It has a clicking noise in the audio different from the clicks from the Raduino when tuning.? It appears to be a problem in the front end.? When I first connected the antenna there was a great increase in band noise.? When I can somewhat ¡°tune¡± a signal, it is just wide band grunting noise when the person talks.? I¡¯ve made a movie of it and can post if anyone is interested.
Fahran said it may be the power supply so I switched to a 12 battery and still have the clicking.? No real signal gets through.? The audio works and the Raduino seems to tune frequency at least it reads 7.200 etc¡
Looking for suggestions.? I built it in a plastic box so there doesn¡¯t seem to be a shorting problem.? No cold solder joints.? No loss toroids.? Shortened all the cables and that did nothing.
Any suggestions would be appreciated.
Mark Underkofler W5MCU
Marc Jones