Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Antennae not making a big difference. Why?
#1

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.


Messages In This Thread
Antennae not making a big difference. Why? - by TheGorper - 01-11-2013, 12:18 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Shadow Meter Bulb
Phorum members, I am trying to find the bulb # for PHILCO Shadow Meter part number 45-2180 that is from a 37-640 chassis...georgetownjohn — 06:53 PM
Philco 41-608 changer coupler
3D-printing...short of machining, of course. Or molding.morzh — 05:20 PM
Philco 41-608 changer coupler
Thanks, Morzh. That solves the issue of the rubber pieces. Now, I need to find a way to replicate the pot metal piec...alangard — 05:07 PM
12' Philco
If it is 12', either Kareem or Andre would have to jump pretty high to look at the front panel. Kareem would have an e...morzh — 01:48 PM
12' Philco
And here's a story about the tires on the truck. Same "no-stoop" guy must have installed these! Take care a...GarySP — 01:17 PM
Hickok AC51 tube tester
I think they have only shown the secondaries of the transformer. Two of them feed the rectifiers' filaments.morzh — 12:58 PM
IF can wire size and Rubber mounts?
Arran If the wire inside cans is the gauges you mentioned, the sole reason for that would be mechanical, to stiffen t...morzh — 12:56 PM
12' Philco
Rod, Yes, I know, but the Giant Philco is not around anymore either, so I go by whoever was alive fairly recently. H...morzh — 12:54 PM
Hickok AC51 tube tester
Absolutely no one is going to reverse engineer that circuit. Even the iron core is missing.RodB — 10:37 AM
IF can wire size and Rubber mounts?
Thanks to both members for your help regarding wire and tuner mtg supports. regards--Johngeorgetownjohn — 09:33 AM

[-]
Who's Online
There are currently 4727 online users. [Complete List]
» 1 Member(s) | 4726 Guest(s)
Avatar

>