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

Model 57 Doesn't Match Schematic
#5

Pin 4 and 5 are suppressor grid and cathode respectively. It is common practice to tie these together.

Cap "A" may be what is called a gimmick capacitor. They are typically a pair of wires twisted together to form a few picofarads of capacitance. Not sure but could be used for neutralization. Some Zeniths used it such as the 8S154.


Messages In This Thread
Model 57 Doesn't Match Schematic - by Pepperoni - 11-07-2012, 12:50 PM
RE: Model 57 Doesn't Match Schematic - by rghines1 - 11-10-2012, 07:43 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
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
A Marconi model 86
Thanks Arran; I don't even know what a double conversion is, but i do have a good friend In Nova Scotia that would k...Dan Walker — 07:01 PM

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

>