[Ron Ramirez]

As I mentioned, I did not get a lot of work done on the 70 today. I did remove the tone control and bakelite block (31), along with the resistors connected to it. Don't worry, that bakelite block will be reinstalled once it has been gutted and restuffed with a new .01 uF capacitor. Ditto the tone control - it, too, will be gutted, restuffed, and reinstalled.

Goals for tomorrow - Restuff and reinstall those two parts mentioned above, and then start converting the old power detector tube to become a first audio amplifier. Also, get everything hooked up to the audio output tube.

Also to be accomplished if I have time - Install the extra resistors to the "B-C" resistor, and run wire leads from the "new" volume control to where they need to go in the circuitry. And lest I forget, restuff the AC bypass bakelite block with new safety caps, and attach a new cloth-covered power cord.

I intend to run the new AVC line last, after everything else is done.

Ed L., here's my question for you:

Referring to post #1, page 1, this thread or post #9, page 1, this thread, your schematic shows a 100 pF and a 220 pF capacitor on either side of a 100K resistor, coming off the bottom of the 2nd IF transformer (20). Yet the late 70 schematic, as well as most all other Philco schematics with this AVC circuit, show two 110 pF (100 pF) caps being used. Is there a particular reason why you chose 220 pF?

I think I am going to add a bakelite block with the two 100 pF caps inside (or one 100 pF and one 220 pF), to make a convenient tie point for the 100K resistor and the beginning of the AVC line. If there is room (and there should be easily), I'll add yet another bakelite block with a .01 uF capacitor inside to run between the center wiper of the volume control and the control grid of the first audio amplifier tube.