04-27-2017, 08:11 AM
It seems your osc is working, but the freq range appears to be off. Don't know how accurate your scope freq measurement is, but you might try confirming by listening for the osc signal with a nearby receiver with a digital freq display.
The osc range should be about 995 kHz to 2055 kHz. Its not just a matter of dial calibration because the osc freq ( 455 kHz higher) has to accurately track the antenna tuned circuit at the received station freq. If they do not track, you will have low or no sensitivity. This may be your case since you can receive the strong signal gen at 1000 kHz, but no braoadcast stations.
I would check the connections to the push button and bandswitch. It seems that there may be a problem with the connections to the antenna coil, tuning cap and external antenna loop. If the antenna and osc tuned circuits are not wired correctly, you will have the symptoms you describe.
The osc range should be about 995 kHz to 2055 kHz. Its not just a matter of dial calibration because the osc freq ( 455 kHz higher) has to accurately track the antenna tuned circuit at the received station freq. If they do not track, you will have low or no sensitivity. This may be your case since you can receive the strong signal gen at 1000 kHz, but no braoadcast stations.
I would check the connections to the push button and bandswitch. It seems that there may be a problem with the connections to the antenna coil, tuning cap and external antenna loop. If the antenna and osc tuned circuits are not wired correctly, you will have the symptoms you describe.
