09-07-2018, 09:41 AM
Well, since no one else spoke up, I'll take a shot at this...
http://philcoradio.com/phorum/showthread.php?tid=15007
Normally the 10K resistor is grounded through the "police" band primary of antenna coil (4). When in the "police" band position, both the 11 ohm section of coil (4) primary and the 10K resistor (1) are shorted out.
I would check the integrity of coil (4) as well as the cleanliness of the band switch.
The only change Philco made in that circuit was to add a wave trap to keep any low wave beacons in the vicinity of 460 kc out of the antenna input. See the link above.
http://philcoradio.com/phorum/showthread.php?tid=15007
Normally the 10K resistor is grounded through the "police" band primary of antenna coil (4). When in the "police" band position, both the 11 ohm section of coil (4) primary and the 10K resistor (1) are shorted out.
I would check the integrity of coil (4) as well as the cleanliness of the band switch.
The only change Philco made in that circuit was to add a wave trap to keep any low wave beacons in the vicinity of 460 kc out of the antenna input. See the link above.
--
Ron Ramirez
Ferdinand IN
