[RodB]

Hi, reading your explanation I can see the confusion. If you take it one connection at a time it should result in a desired outcome. One end of the loop antenna is connected to the tuning condenser and pin 6 7A8. The other end of the loop antenna is connected to pin 3 of the antenna transformer. Pin 4 of the antenna transformer is connected to the AVC wherever it comes from. Pin 1 of the antenna transformer is connected to a long wire antenna, which you probably won't need right now. Or you can just connect a short one. Pin 2 of the antenna transformer should have the 0.0015mfd capacitor connected then the other end of the capacitor to ground.

If you get the same results then this is a symptom of the local oscillator not working. If you have a signal generator, feed a modulated rf signal at the IF frequency to pin 6 of the 7A8 through a 0.047mfd cap. If you get a tone at the speaker then the oscillator isn't working.

You stated you connected pin 3 of the antenna transformer to the 7C6. There is no such connection on the schematic.