Hi
I just become a proud owner of BITX40. After 2 evenings tinkering,?I got "first smoke" out (as literally, not virtually ,?whew). I found this?RF spur issue, with among some others, but I think this?must be solved.?It is unacceptable.
After two seconds of thinking,?I'm afraid that the audio trafo between the mike amp and mod won't do any good. When the power is applied to the mic amp, this will cause sudden?current flow through the primary, and what does the secondary ?
The spike will be there present there too.
Instead of sticking in this perculiar way of generating CW, one could think alternative methods. Raduino's extra oscillator maybe and for those w/o , injecting sine wawe to mic will work also.
Timo,OH7LMQ
