The BFO and BFO amplifier without the BFO capacitor in the way. Note the black PC mount "Gain Adjust" pot. |
The BFO capacitor mounted above the BFO circuitry. Note the wire going from the stator on the BFO capacitor to the BFO Tune square. Have the BFO capacitor half way opened (as in the picture) when adjusting the BFO coil (Black core 455 kHz can on the left). |
The standoffs mounted on the PCB pre-tined with solder ready to solder on the capacitor. |
Brass nuts are the easiest to use. Filing the chrome |
This modification will mount the BFO capacitor in a location out of the way of the VFO mounting spacers. This modification makes it much easier to lift the top board from the mounting spacers and work on the receiver. It involves moving a 100K resistor, drilling two holes with 1/8" drill bit in the old resistor mounting hole and the center ground hole in the "Ground" box next to the corner mounting spacers. |
Arrows show where the resistor was unsoldered and to which hole it was moved and resoldered to ground. Drill the holes pointed out with a 1/8" drill bit. |
Shows holes drilled ready to mount BFO capacitor. |