Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

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

Philco 91-121 sensitivity
#7

Ok so what happens if you have the shield on and the ant off is the signal stronger if you touch the mixer cap or the rf amp cap??
Two other thing come to mind, maybe your 39/44 is flat and what kind of voltage do you have on pin 3 and pin 4.
Typically w/o the ant connected reception should be the loudest when touching the rf amp grid cap. A slight decrease when touching the mixer cap and should go dead (most of the time) when touching the if amp grid cap.

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!

Terry


Messages In This Thread
Philco 91-121 sensitivity - by grandntl - 10-05-2017, 03:41 PM
RE: Philco 91-121 sensitivity - by Ron Ramirez - 10-05-2017, 03:58 PM
RE: Philco 91-121 sensitivity - by Radioroslyn - 10-05-2017, 05:34 PM
RE: Philco 91-121 sensitivity - by grandntl - 10-06-2017, 08:51 AM
RE: Philco 91-121 sensitivity - by Radioroslyn - 10-06-2017, 10:19 AM
RE: Philco 91-121 sensitivity - by grandntl - 10-06-2017, 12:49 PM
RE: Philco 91-121 sensitivity - by Radioroslyn - 10-06-2017, 01:22 PM
RE: Philco 91-121 sensitivity - by grandntl - 10-06-2017, 02:28 PM
RE: Philco 91-121 sensitivity - by Radioroslyn - 10-06-2017, 03:26 PM
RE: Philco 91-121 sensitivity - by grandntl - 10-06-2017, 05:59 PM
RE: Philco 91-121 sensitivity - by Radioroslyn - 10-06-2017, 07:39 PM
RE: Philco 91-121 sensitivity - by grandntl - 10-27-2017, 03:32 PM
RE: Philco 91-121 sensitivity - by grandntl - 10-28-2017, 08:41 AM
RE: Philco 91-121 sensitivity - by grandntl - 10-29-2017, 12:29 PM
RE: Philco 91-121 sensitivity - by Radioroslyn - 10-29-2017, 01:48 PM
RE: Philco 91-121 sensitivity - by grandntl - 11-01-2017, 10:29 AM
RE: Philco 91-121 sensitivity - by Ron Ramirez - 11-01-2017, 12:48 PM
RE: Philco 91-121 sensitivity - by klondike98 - 11-01-2017, 01:42 PM
RE: Philco 91-121 sensitivity - by grandntl - 11-02-2017, 10:08 AM
RE: Philco 91-121 sensitivity - by grandntl - 11-14-2017, 02:16 PM
RE: Philco 91-121 sensitivity - by klondike98 - 11-14-2017, 02:39 PM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
The speaker table error?
G  10-1/2"       65, 76, 87, 95 Push-Pull 45's 2766 0.7 550 3200 H   10-1/2"    77, 96 Push-Pull...morzh — 09:26 PM
A Marconi model 86
I have a Stromberg, one of the early ones, seems early 30s. This is what I call a back breaker. None of the early Philc...morzh — 08:28 PM
A Marconi model 86
A backbreaker.....PaulPaul Philco322 — 08:12 PM
A Marconi model 86
>>What a behemoth! A Juggernaut.morzh — 07:47 PM
Philco 70 antenna lead
I am not sure I understood about the coils and the mush. I looked an more than one coil in 20, 70, 90, 60, Zeniths and ...morzh — 07:46 PM
A Marconi model 86
:e_biggrin: What a behemoth!  I hope the final result is as much a quality sounding example!  Keep us posted on your pro...GarySP — 07:32 PM
A Marconi model 86
I should add that the double conversion may only be used on the shortwave bands, but I haven't looked at the schematic t...Arran — 07:27 PM
Philco 70 antenna lead
Yes, that wire will not pick up much interference as routed - the RF at that level won't be affected, and if you have st...radio1 — 07:26 PM
Philco model 60
I'm also a member of MARC. Did you attend the Vintage Electronics Expo in Waterford, MI last month? That's where I got...GarySP — 07:22 PM
A Marconi model 86
Dan Double conversion is using two IF converters instead of one. This improves the image response. morzh — 07:15 PM

[-]
Who's Online
There are currently no members online.

>