[Ron Ramirez]

Okay!

As I began troubleshooting this morning, I noticed something that, if it were not causing trouble, would do so in the future:

[Image: http://www.philcoradio.com/images/phorum...770-55.jpg]

Pardon the less than optimal quality photo, but if you look closely, you will see that part of the mica insulator is missing under the adjustment screw and plate of this compensator. This is the antenna trimmer for the AM band at 1500 kc, on top of the left gang of the tuning condenser (as viewed from the back).

For comparison, look at the RF trimmerr for 1500 kc, on top of the center section of the tuning condenser gang:

[Image: http://www.philcoradio.com/images/phorum...770-56.jpg]

You can see the mica sheet is still there under that trimmer.

I disassembled the antenna trimmer and removed what was left of the mica sheet (not much, actually).

Next, I cut a piece of clear plastic from a discarded blister pack:

[Image: http://www.philcoradio.com/images/phorum...770-57.jpg]

A better replacement for mica sheets in trimmers is clear plastic report covers as they have more flexibility. But I didn't have a report cover around, so I settled for second best. At least this will keep the two halves of the trimmer insulated from each other.

[Image: http://www.philcoradio.com/images/phorum...770-58.jpg]

I replaced mica cap (12) also. The left terminal broke as I was removing the wires, so I made another terminal from a couple loops of wire wrapped around and through the hole in the terminal. After reassembly, this is how it looks now.