Hello John P.,
thank you very much for all your work on the SimpleSA.
I have finally built one using Glen's, VK3PE's, board designs and it is working very well, if you are just putting in one RF board.
Yesterday I have finally fully assembled a second RF board for the tracking generator, done all the modifications described on carnut.info, i.e. cut the tracks on the main RF boards, added the connection to D2, shortened R31 etc..
It starts up correctly and also displays "Tracking IF initialized" and "Tracking LO initialized".
In the "Sweep Low" mode it works fine, as long, as I am not enabling tracking through "Output/Tracking/On".
As soon as I do that, the ground noise line will move from -80dBm to -50dBm, even if the input is just connected to the reference output or just open.
It is the same, if I connect the input to the output of TG board, just a bit more ground noise around -50dBm.
Setting "Output/Tracking/Generator" with Frequency set to 35MHz again, does not show an output signal, but just a pretty clean ground noise line at -50dBm.
Could it be, that the tracking generator functionality has not yet been fully implemented in the simpleSA_0_11 code?
--
Joerg, ex-DB2OO
