[MrFixr55]

Hi 37 Cord,

The Philco library has documents on rewinding oscillator coils, but they are for rather large forms (3/4-7/8 in.). Early Philco coils were notorious for failure due to a reaction between breaking down insulators causing an acid reaction that ate through the wiring. The newer wax impregnated ones usually do not have this issue, but I do have an open IF transformer on a 1940 Mantola portable that I will eventually get to. The open is at the bottom of the coil, of course.

When I rewound the Philco coils, I would tape a piece of thick paper as a "dam" for lack of a better word. I would push the coil against this dam while winding and would get a neat coil that way. Thin Litz wire is not readily available but if this coil is indeed the tickler, the spacing provided by the cotton covering is likely not important.

Unfortunately, Philco, like many manufacturers, did not list the inductance, turns ratio, or other specs for the coil and certainly did not list parts from aftermarket suppliers, such as Meissner, Thordarson, etc.
Sams Photofact (Howard Sams, Inc.) did list replacement part numbers from suppliers to the radio repair trade, but I don't know if they documented this radio (they did have a car radio series).

Worst case scenario, I hope that an oscillator coil from a more modern radio may be made to work.

Your experience and talent are very much appreciated here! Do find the time to explore our Phorum as there are forums in our site for Audio, especially tube HiFi amps. Our late founder, Ron Ramirez was a fan of the Fisher sets from the late 1950s. One of our members, TV Man is in the process of building some Chinese kit "monoblocks that he is modifying the design of for better performance. Also check out "Old Ron's Bar and Grill" get a virtual burger and brew and shoot the breeze about the weather, what you fixed recently, etc.

My brother is a bassist who has an Ampeg B15 that I have repaired. I have a Premier (supposedly an 88 but it does not match the schematic). I found it at the curb about 50 years ago. It appears to be built with loctal tubes including 4 7B5s which are the equivalents to 6K6, and what appears to be government surplus capacitors from ARC5 aircraft receivers and even a few "dog bone" resistors. The styling of the amp appears to be more 1940s than when it may have actually been made. The amp case is a clamshell where the speaker is separated from the amp when in use. The speaker is a Jensen, but with an electromagnet, powered by its own supply instead of being used as a choke in the amp's power supply. It appears to be a professional unit, but not from the "Rock" era, maybe from the "Big Band" era. I will get around to it eventually. If you ever heard of or saw one of these, I would love to get any info that you have.