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Showing posts from January 25, 2009

The last laugh

After introducing the toroid kit for Bitx Version 3 I also felt the need to try out how the Bitx Version 3 performed with the toroid cores as mentioned by Leonard and as a part of the new Bitx kit.

So I began with a new set of boards and in a few days I was able to complete all the stages and the time had come to test the rx section of my Bitx.

I had the FLL Counter connected for checking the drift in the Bitx and making my vfo stable with its enhanced stability feature.

As I had checked the BFO and VFO frequencies, I had not checked the audio quality of rx only the voltages that were on the I.C pins. I had assumed the rx would be ok,
as I switched the rx I was welcomed by a strong audio which made me pleased that the rx had started well, but my excitement did not last for long, what followed was a motorboating type of noise and hum, which the rx was picking up.
My first doubt was on the FLL, so I removed and disconnected it from the Bitx,
but this did not cure the problem.
After lo…