Home » Audio » Craftsmen » Airline model 93BR 720 A
Airline model 93BR 720 A [message #29964] Thu, 24 January 2008 10:29 Go to next message
judge47 is currently offline  judge47
Messages: 2
Registered: May 2009
Esquire
Restoring this old AM/SW Airline and I have a question. It has an ink stamp on the chassis "25 CYCLES". ? Also there is an "X" hand written at the end of the model #.
Any information helpful and appreciated, j

Re: Airline model 93BR 720 A [message #29965 is a reply to message #29964] Fri, 25 January 2008 14:03 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18787
Registered: January 2001
Illuminati (33rd Degree)

My first thought was the "25" indicated the 25 meter band from 11.5-12Mhz. But then I re-read and saw you wrote 25 cycles, so I don't know what that's all about. AC power is generally 50 or 60 cycles. As for identification, Airline was the label used for Montgomery Ward radios. They bought OEM chassis from RCA and others so it is generally hard to find schematics and info with the Montgomery Ward model number. You usually have to identify the original manufacturer's chassis by visual inspection, comparing the layout and tube complement.


Re: Airline model 93BR 720 A [message #29966 is a reply to message #29965] Fri, 25 January 2008 15:28 Go to previous message
judge47 is currently offline  judge47
Messages: 2
Registered: May 2009
Esquire
Thanks Wayne,
From the model #, it appears to have been made by Belmont Radio in or after 1939.
Bougt it for the unusual circuit. Found a pretty good Rider schematic on Nostalgiaair.com., but cannot find anything relating to the
'25 cycle" stamp on the chassis. I'll re-cap it and bring it up on a variac and see what happens. Thanks again.

Previous Topic: polyfill blues
Next Topic: Octal Phono
Goto Forum:
  


Current Time: Sun Nov 24 04:10:23 CST 2024

Sponsoring Organizations

DIY Audio Projects
DIY Audio Projects
OddWatt Audio
OddWatt Audio
Pi Speakers
Pi Speakers
Prosound Shootout
Prosound Shootout
Miller Audio
Miller Audio
Tubes For Amps
TubesForAmps.com

Lone Star Audiofest