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

The Fisher 440-T FM Receiver
#81

Mike and Mike,

All electrolytics in the power supply were replaced (by me).

All electrolytics in the various audio amplifier boards were replaced by me, as were some (not all) of the original film caps. C19/20, C23/24, C29/30 are all new.

Mike (PhilcoMike), the service info does not state the DC resistance of the primary and secondary of the two interstage transformers. But hold the phone. My 440 does not completely match the schematic I added the link to previously, and mine is direct coupled - it does not have the interstage transformers. I never could find a schematic that matched my 440-T exactly, although this one comes close in many regards. See, Fisher was like Philco in that they made many running changes and apparently did not get all of them documented.

The audio signal in the photographs has been supplied by the Sencore AM-FM generator that you, Mike (morzh) were so kind to go over for me last year. It's a 10.7 mc signal applied to the input of the IF board, modulated at 400 cycles. So what shows in the pictures is 400 cycle audio.

I have the manual for that old Conar scope - somewhere. I don't remember where it is right now so I am at a loss as to just how to calibrate it to a known V/div quantity. To be honest, I never used the thing enough to become really proficient with it - I started using it as an output indicator many years ago and just stuck with that all of these years.

--
Ron Ramirez
Ferdinand IN


Messages In This Thread
The Fisher 440-T FM Receiver - by Ron Ramirez - 03-01-2014, 10:51 PM
RE: The Fisher 440-T FM Receiver - by morzh - 03-01-2014, 10:54 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-01-2014, 11:00 PM
RE: The Fisher 440-T FM Receiver - by morzh - 03-01-2014, 11:08 PM
RE: The Fisher 440-T FM Receiver - by skyscraper - 03-01-2014, 11:13 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-01-2014, 11:18 PM
RE: The Fisher 440-T FM Receiver - by skyscraper - 03-01-2014, 11:26 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-02-2014, 09:37 AM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-02-2014, 08:08 PM
RE: The Fisher 440-T FM Receiver - by BrendaAnnD - 03-02-2014, 10:22 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-02-2014, 10:26 PM
RE: The Fisher 440-T FM Receiver - by morzh - 03-02-2014, 10:34 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-03-2014, 10:10 AM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-03-2014, 11:08 AM
RE: The Fisher 440-T FM Receiver - by Mondial - 03-03-2014, 11:20 AM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-03-2014, 12:54 PM
RE: The Fisher 440-T FM Receiver - by Mondial - 03-03-2014, 01:17 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-03-2014, 01:28 PM
RE: The Fisher 440-T FM Receiver - by morzh - 03-03-2014, 01:51 PM
RE: The Fisher 440-T FM Receiver - by BrendaAnnD - 03-03-2014, 02:46 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-03-2014, 04:25 PM
RE: The Fisher 440-T FM Receiver - by morzh - 03-03-2014, 04:48 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-03-2014, 04:51 PM
RE: The Fisher 440-T FM Receiver - by Mondial - 03-03-2014, 05:16 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-03-2014, 06:50 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-03-2014, 06:51 PM
RE: The Fisher 440-T FM Receiver - by Mondial - 03-03-2014, 07:21 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-03-2014, 09:53 PM
RE: The Fisher 440-T FM Receiver - by BrendaAnnD - 03-03-2014, 10:56 PM
RE: The Fisher 440-T FM Receiver - by Mondial - 03-03-2014, 11:39 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-04-2014, 10:53 AM
RE: The Fisher 440-T FM Receiver - by Mondial - 03-04-2014, 11:14 AM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-04-2014, 07:58 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-10-2014, 08:45 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-13-2014, 05:53 AM
RE: The Fisher 440-T FM Receiver - by BrendaAnnD - 03-13-2014, 10:09 AM
RE: The Fisher 440-T FM Receiver - by morzh - 03-13-2014, 10:21 AM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-13-2014, 04:40 PM
RE: The Fisher 440-T FM Receiver - by Mondial - 03-13-2014, 06:05 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-13-2014, 07:01 PM
RE: The Fisher 440-T FM Receiver - by Mondial - 03-13-2014, 08:05 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-13-2014, 08:08 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-13-2014, 08:10 PM
RE: The Fisher 440-T FM Receiver - by Mondial - 03-13-2014, 08:36 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-13-2014, 08:37 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-13-2014, 08:43 PM
RE: The Fisher 440-T FM Receiver - by Mondial - 03-13-2014, 08:50 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-13-2014, 08:55 PM
RE: The Fisher 440-T FM Receiver - by Mondial - 03-13-2014, 09:07 PM
RE: The Fisher 440-T FM Receiver - by BrendaAnnD - 03-13-2014, 10:12 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-15-2014, 10:07 AM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-15-2014, 11:22 AM
RE: The Fisher 440-T FM Receiver - by Mondial - 03-15-2014, 11:34 AM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-15-2014, 12:16 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-15-2014, 06:35 PM
RE: The Fisher 440-T FM Receiver - by BrendaAnnD - 03-15-2014, 09:01 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-15-2014, 10:39 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-16-2014, 03:41 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 10-04-2014, 10:34 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 02-20-2015, 11:33 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 02-26-2015, 10:12 AM
RE: The Fisher 440-T FM Receiver - by morzh - 02-26-2015, 12:09 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 02-26-2015, 09:05 PM
RE: The Fisher 440-T FM Receiver - by morzh - 02-26-2015, 11:17 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-03-2015, 12:46 PM
RE: The Fisher 440-T FM Receiver - by morzh - 03-03-2015, 01:07 PM
RE: The Fisher 440-T FM Receiver - by PhilcoMike - 03-03-2015, 03:37 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-03-2015, 03:42 PM
RE: The Fisher 440-T FM Receiver - by morzh - 03-03-2015, 04:19 PM
RE: The Fisher 440-T FM Receiver - by morzh - 03-03-2015, 04:43 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-03-2015, 09:56 PM
RE: The Fisher 440-T FM Receiver - by morzh - 03-03-2015, 10:39 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-03-2015, 10:46 PM
RE: The Fisher 440-T FM Receiver - by morzh - 03-03-2015, 10:52 PM
RE: The Fisher 440-T FM Receiver - by morzh - 03-03-2015, 10:57 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-03-2015, 11:04 PM
RE: The Fisher 440-T FM Receiver - by morzh - 03-03-2015, 11:12 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-04-2015, 11:03 AM
RE: The Fisher 440-T FM Receiver - by PhilcoMike - 03-04-2015, 12:50 PM
RE: The Fisher 440-T FM Receiver - by morzh - 03-04-2015, 02:21 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-04-2015, 02:36 PM
RE: The Fisher 440-T FM Receiver - by morzh - 03-04-2015, 02:44 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-04-2015, 06:41 PM
RE: The Fisher 440-T FM Receiver - by morzh - 03-04-2015, 06:44 PM
RE: The Fisher 440-T FM Receiver - by PhilcoMike - 03-06-2015, 02:17 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-06-2015, 02:50 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-11-2015, 02:49 PM
RE: The Fisher 440-T FM Receiver - by morzh - 03-11-2015, 03:44 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-11-2015, 03:58 PM
RE: The Fisher 440-T FM Receiver - by morzh - 03-11-2015, 06:46 PM
RE: The Fisher 440-T FM Receiver - by codefox1 - 03-14-2015, 10:26 AM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-14-2015, 10:15 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-17-2015, 08:34 PM
RE: The Fisher 440-T FM Receiver - by PhilcoMike - 03-18-2015, 01:17 PM
RE: The Fisher 440-T FM Receiver - by Ron Ramirez - 03-18-2015, 01:53 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 42-345 Restoration/Repair
Vlad95, Thank you for the stringing guides and wow there are so manyosanders0311 — 06:01 PM
5U4 vs 5Z4 tubes
A pre war Hallicrafters, and an early one too, very nice! 1936 is pretty early for metal tubes too, which would explain ...Arran — 05:58 PM
Philco 42-345 Restoration/Repair
Thanks Rod, "When you hear the background hiss and no station it usually indicates that the oscillator quit" ...osanders0311 — 05:52 PM
Philco 42-345 Restoration/Repair
RodB :beerchug:Vlad95 — 10:22 AM
Philco 42-345 Restoration/Repair
Vlad, you nailed it. Swiss and German roots.RodB — 09:54 AM
5U4 vs 5Z4 tubes
Well this is a Hallicrafters SX/9 circa 1936. No real issues so far although I dodged a real bullet with a cap that was...bridkarl — 07:59 AM
5U4 vs 5Z4 tubes
The pinout is the same but the 5U4 has a 3 amp filament, verses 2 amps or less on the 5Z4. I think that the pinout of a ...Arran — 12:04 AM
Philco 42-345 Restoration/Repair
By the way. osanders0311 Take a look here: Dial cord stringing Guides May be here you can fount correct string settin...Vlad95 — 11:15 PM
5U4 vs 5Z4 tubes
5U4 and 5Z4 almost identical. I think nothing happened if you left 5U4 instedad 5Z4 long time. Just heater current 5U4 ...Vlad95 — 11:02 PM
Philco 42-345 Restoration/Repair
Hello Vlad95 , Very Funny ! Sincerely Richardradiorich — 11:01 PM

[-]
Who's Online
There are currently 1301 online users. [Complete List]
» 1 Member(s) | 1300 Guest(s)
Avatar

>