Hi I need to rewind the smaller coil winding on the oscillator coil #10 on the schematic...question is...does it have to be exactly the same wire thickness or can it be thicker..I have the green and red enameled wire from radio shack.....the red is thinner than the green so I think I will use this one. So will this work with slightly thicker wire or is this REAL criticial. I did rewind a antenna coil in my philco 90 and it worked fine. This coil is a typicial philco coil wound on the inch or so diameter tube. it has two coils on it.........a larger one that is would almost the whole length of the tube and the one that is wound on top of the larger one that is only 15 turns.

:Hello, I rewound the secondary of the coil and wow...the radio operates now......it sounds distored at times....maybe volumeknob needs cleaned?? also the plate voltage on the 2nd det is at 42 volts which is still low(not sure why)................WOULD THE THICKER WIRE MAKE A DIFFERENC????
:Hi I need to rewind the smaller coil winding on the oscillator coil #10 on the schematic...question is...does it have to be exactly the same wire thickness or can it be thicker..I have the green and red enameled wire from radio shack.....the red is thinner than the green so I think I will use this one. So will this work with slightly thicker wire or is this REAL criticial. I did rewind a antenna coil in my philco 90 and it worked fine. This coil is a typicial philco coil wound on the inch or so diameter tube. it has two coils on it.........a larger one that is would almost the whole length of the tube and the one that is wound on top of the larger one that is only 15 turns.

If you have an old cheap output transformer at hand, you can disassemble the iron. Then take off the outer speaker winding. The inner winding usually has wire similar in diameter as the Philco oscillator coil primaries.

Thomas

:well I already put the coil back together.....and it works.....just had to adjust one of the tuning condenser trimmer caps on the side of the tuning condenser
:If you have an old cheap output transformer at hand, you can disassemble the iron. Then take off the outer speaker winding. The inner winding usually has wire similar in diameter as the Philco oscillator coil primaries.
:
:Thomas

::so will this rewound coil make a difference with larger wire or should I leave it alone and keep makeing repairs till it sounds normal....since it does work
::well I already put the coil back together.....and it works.....just had to adjust one of the tuning condenser trimmer caps on the side of the tuning condenser
::If you have an old cheap output transformer at hand, you can disassemble the iron. Then take off the outer speaker winding. The inner winding usually has wire similar in diameter as the Philco oscillator coil primaries.
::
::Thomas

If you align the radio with your signal generator, and it tracks reasonably well across the dial, then all is well. If the coil doesn't match the tuning condenser properly, it won't shift frequency at the same rate as the antenna circuit. Stations will be out of position at certain points on the dial. Most likely sensitivity will suffer at these points.

Thomas

Distortion may be due to the AVC circuit not working properly. If any condensers are leaky in the AVC circuit, the circuit will not function properly, if at all. Condensers even with leakage as high as 5 million ohms will make the AVC circuit malfunction. You must go through the radio and replace all leaky condensers if you expect it to perform properly.

Thomas

:Yes the condenser is leaky 4.8 meg ohms
:Distortion may be due to the AVC circuit not working properly. If any condensers are leaky in the AVC circuit, the circuit will not function properly, if at all. Condensers even with leakage as high as 5 million ohms will make the AVC circuit malfunction. You must go through the radio and replace all leaky condensers if you expect it to perform properly.
:
:Thomas

Just to let you know, all of the condensers in my Philco 60 are leaky, too. I used to use it all the time. I replaced the tone condensers, which blew the output transformer. I also replaced the output transformer. With the other leaky condensers, though, sometimes the radio would start crackling, and sometimes it would get louder and then quieter. Now it does something reall bizarre sometimes. It is wise to replace all of the condensers. Sometime when I get time, I'm going to replace all of the condensers in my 60. Modern condensers are extremely reliable. You will thank yourself for replacing all of the old ones. When you have free time, get out your Philcos and a bucket of mineral spirits or gasoline, and start soaking away. It is not necessary to re-fill the bakelite units with tar once new condensers are installed. The tar simply prevented moisture from being absorbed by the old paper condensers. Dress all long leads properly within the bakelite units.

Thomas