1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration

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

Linear Mode
model 86 fm detector problems
daddydonn
Junior Member
**
Posts: 11
Threads: 2
Joined: Jun 2012
City: Canada
#6

06-27-2012, 09:54 AM
Hi Terry:
Thanks for the reply. I did check the coil both primary and secondary and they are not open and the tertiary(?) winding has connection to the secondary winding. Another funny thing, there is no sound at all with c314 in place, and it has been replaced. I've just bought an EICO sweep marker and I want to see what the fm bandpass looks like. Philco complicated things by choosing 9.1 mhertz as the if. I already have a Heath sweep marker but it is for 10.7mhz not 9.1. The EICO has variable marker (I believe) so I should be able to adjust it to the Philco i.f. We'll see how that goes. I keep wondering if there should be a cap across the secondary of the ratio transformer. The schematic does not show one but similar schematics for other radios do. What do you think?
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
model 86 fm detector problems - by daddydonn - 06-13-2012, 08:29 AM
RE: model 86 fm detector problems - by codefox1 - 06-13-2012, 02:14 PM
RE: model 86 fm detector problems - by daddydonn - 06-13-2012, 04:28 PM
RE: model 86 fm detector problems - by daddydonn - 06-25-2012, 09:56 PM
RE: model 86 fm detector problems - by 7estatdef - 06-26-2012, 04:36 PM
RE: model 86 fm detector problems - by daddydonn - 06-27-2012, 09:54 AM
RE: model 86 fm detector problems - by Don Lind - 06-27-2012, 04:08 PM
RE: model 86 fm detector problems - by daddydonn - 06-27-2012, 05:19 PM
RE: model 86 fm detector problems - by daddydonn - 07-05-2012, 01:25 PM
RE: model 86 fm detector problems - by daddydonn - 07-05-2012, 01:28 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.

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration