04-05-2006, 07:14 PM
Ahhh....
The field coils, or "pots" as they're are called, may not be the same physically anyway. I would not try to swap, unless they are same diameter and core diameter dimensions.
I think the H-16 may be ok, since the A/C line voltage nowadays is higher than the 115 volts the 37-650 was rated at, the higher 120-125 volt A/C mains may compensate for the extra voltage drop on the field coil/choke that the H-16 introduces in the power supply. You cannot hurt the 650 with a lower B+ (due to field coil's higher resistance) , the set may still operate ok.
Give it a try. Worst case, the set may not pump out the audio wattage to shatter glass, but it may perform adequately with todays higher powered stations and still have the sensitivity to pull in all stations.
Keep us apprised of your "experiments."
Oooo.....rocket science with antique electronics....
Deja vu all over again......
The field coils, or "pots" as they're are called, may not be the same physically anyway. I would not try to swap, unless they are same diameter and core diameter dimensions.
I think the H-16 may be ok, since the A/C line voltage nowadays is higher than the 115 volts the 37-650 was rated at, the higher 120-125 volt A/C mains may compensate for the extra voltage drop on the field coil/choke that the H-16 introduces in the power supply. You cannot hurt the 650 with a lower B+ (due to field coil's higher resistance) , the set may still operate ok.
Give it a try. Worst case, the set may not pump out the audio wattage to shatter glass, but it may perform adequately with todays higher powered stations and still have the sensitivity to pull in all stations.
Keep us apprised of your "experiments."
Oooo.....rocket science with antique electronics....
Deja vu all over again......
Chuck Schwark,
The Philco Repair Bench
[Image: http://www.philcorepairbench.com/images/philog3tiny.gif]
http://www.philcorepairbench.com
