01-11-2013, 11:18 AM
On a Philco model 91 type 126:
The antennae being connected or not connected doesn't seem to make a huge difference in receiption, but placing my hand over the coils on the set in and around the detector tube and coil does.
I have a 25' wire running out a window and across my deck outside.
I also have a low hum that is always there and sounds like a 60 Hertz low hum. AC? How much hum is normal for these sets? I will try to record and post the record as an attachment here.
Notes:
1) I have moved the set to an area of the house with low interference from other sources and tested this with a modern AM radio.
2) Have replaced the 10K ohm resistor 21 with a 7.5K ohm and baked my coil per Ron's recommendations (see my other post in Electronic Restoration. This has fixed the problem with the set cutting out and ceasing to work at the ends of the broadcast dial. It now works all across the dial.
Thanks for all the help from everyone so far. The set now picks up most stations in the area well and many clear channels from far away at night.
WCBS at 880 in New York for example. I am in North Carolina.
The antennae being connected or not connected doesn't seem to make a huge difference in receiption, but placing my hand over the coils on the set in and around the detector tube and coil does.
I have a 25' wire running out a window and across my deck outside.
I also have a low hum that is always there and sounds like a 60 Hertz low hum. AC? How much hum is normal for these sets? I will try to record and post the record as an attachment here.
Notes:
1) I have moved the set to an area of the house with low interference from other sources and tested this with a modern AM radio.
2) Have replaced the 10K ohm resistor 21 with a 7.5K ohm and baked my coil per Ron's recommendations (see my other post in Electronic Restoration. This has fixed the problem with the set cutting out and ceasing to work at the ends of the broadcast dial. It now works all across the dial.
Thanks for all the help from everyone so far. The set now picks up most stations in the area well and many clear channels from far away at night.
WCBS at 880 in New York for example. I am in North Carolina.
