10-06-2017, 07:39 PM
Hmmmm
I did find something that doesn't make any sense on the schematic. It shows the cathode of the rf amp and if tied together but if you look at the voltage chart there at two different voltage [Image: http://philcoradio.com/phorum/images/smi...roblem.gif]. Have a look at the resistor in #9 to see if it has gone up in value. 20 or 25v is ok but it could be a little lower, this way the tube will produce more gain. Unless Philco had a bulletin and split the two apart and added a second resistor the if amp K is going to higher than is listed too.
I did find something that doesn't make any sense on the schematic. It shows the cathode of the rf amp and if tied together but if you look at the voltage chart there at two different voltage [Image: http://philcoradio.com/phorum/images/smi...roblem.gif]. Have a look at the resistor in #9 to see if it has gone up in value. 20 or 25v is ok but it could be a little lower, this way the tube will produce more gain. Unless Philco had a bulletin and split the two apart and added a second resistor the if amp K is going to higher than is listed too.
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got it!
Terry
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