mbates14
01-08-2015, 11:15 AM
Can anyone identify this? and is there schematics available for it? it appears to be a Zenith radio power supply/amplifier, but aside from that I dont know.
https://dl.dropbox.com/s/7f3ksndctw3kmev/20150108_120338.jpg?dl=0
https://dl.dropbox.com/s/z4gqi6gv16m333s/20150108_120349.jpg?dl=0
https://dl.dropbox.com/s/2p00bszkd5wlg40/20150108_120355.jpg?dl=0
Findm-Keepm
01-08-2015, 11:30 AM
Date code on one of the caps suggests a manufacture date of 1947, so that is helpful in locating a sams/schematic/model number. Based on that, the Sams would be a double digit sams set (Sams 35-90 or so). ETF has some early Zenith data - check that out as a resource.
mbates14
01-08-2015, 11:34 AM
Yea I dont have any sams or riders at all. So ill have to hunt online to see if there is any free data.
EdKozk2
01-30-2015, 05:01 PM
The power supply chassis looks like it's from a Zenith Model 12h090.
The chassis number 11c21.
The radio had AM, SW, FM1 (old band) and FM2 new band.
The Sam's number was 462-20 from July 1946.
maxhifi
01-30-2015, 09:11 PM
http://www.nostalgiaair.org/Resources/713/M0024713.htm
Check here
Findm-Keepm
01-31-2015, 09:12 AM
The power supply chassis looks like it's from a Zenith Model 12h090.
The chassis number 11c21.
The radio had AM, SW, FM1 (old band) and FM2 new band.
The Sam's number was 462-20 from July 1946.
Sams 2, folder 20. Sams numbered their early sets with the year, followed by set/folder. Sams 462-20 would be Sams 2, folder 20.
Cheers,
Findm-Keepm
01-31-2015, 09:16 AM
http://www.nostalgiaair.org/Resources/713/M0024713.htm
Check here
The schematic has the old convention of resistance - 47M, for example is not a 47 megohm, but a 47K. Same with the 330M - It's a 330k.
Cheers,
init4fun
01-31-2015, 01:35 PM
:scratch2: Interesting set indeed . I looked at the Nostalgia Air schematic and the first thing that caught my eye was the odd selection of tube base styles used . Exactly one 7 pin mini (6AG5 being used as the RF amp) and one Loctal (7W7 being used as the 2nd IF) with the rest being Octals .
I was also kinda wondering about the single 5Y3 being asked to feed all the tubes' B+ , and do it with enough power to produce decent sound from the pair of 6V6s ....