Hi Ashhar,
1. If you increase the rf gain to 100, can you see the noise grass on the waterfall? If yes, then the code board is working fine.
Yes I can see noise in the waterfall
2. Next we need to know if the clocks are working. Check the outputs on C31 and C7. C7 should show 40 or so. At 7 mhz band, c3
C31 should show 47 mhz. The C31 output should be around 3v peak to peak, C7 should be lower, around 1.2v.
The scope at C7 shows 40mHz at 1.9 Vpp, C31 shows 47mHz at 6.7 Vpp
?
3. Take a wire connected to the antenna and touch it to C80 (not the ground side). Does the receiver wake up? Now move to C94, is the signal still there?
Touching C80 or C94 with an improvised antenna shows an increase in noise level and I could ( for the first time :-) ) barely hear a station in the background.
Touching C211 has a similar effect.
Did you read the previous conversation I had with Evan Hand and Steve Beckman? It seems as if L27 is not working.
Thanks a lot for your help.
Stefan Beck