27-10-2018, 11:43 AM
Thanks Doug and Peter for taking the time to provide me with some excellent avenues for enquiry.
Looks like its over-driving producing all sorts of spurs... just using them as a tool to help me understand superhet, antenna tuning etc.
I looked for the intermodulation products and they are certainly there (and all over the place)... eg at 1926kHz (a simple addition of 720 6WF and 1206 6TAB).
720 6WF is also crystal clear at 3 x 720 = 2160 kHz. Very interesting how these could also be acting as LO's.
An interesting example Peter of the VHF image of Radio Australia... thanks for the input.. I'll be thinking through its implications for my investigations.
I'll be sure to report back if I make any progress! Thanks again.
Looks like its over-driving producing all sorts of spurs... just using them as a tool to help me understand superhet, antenna tuning etc.
I looked for the intermodulation products and they are certainly there (and all over the place)... eg at 1926kHz (a simple addition of 720 6WF and 1206 6TAB).
720 6WF is also crystal clear at 3 x 720 = 2160 kHz. Very interesting how these could also be acting as LO's.
An interesting example Peter of the VHF image of Radio Australia... thanks for the input.. I'll be thinking through its implications for my investigations.
I'll be sure to report back if I make any progress! Thanks again.