 
|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
|
|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
208.101.142.22
Any ideas about who made this baby? Labeled as a Wards Super Airline, yellow printing, short black plates (size of a 50's GE gray plate), copper posts, D getter. Plates appear to be made from a single piece of metal and are folded and tab closed on one side only. On the non tab side you can see the post through 2 slots in the end of the plate. Silver 12BH7A printed near top of tube with a straight line of 6 dots above it. Yellow 357 over 948 printed on side of tube. Thanks.
Follow Ups:
Are there 4 ribs on the plate and are you sure the 357 isn't 337?
337 is the EIA code for Westinghouse. GE and Westinghouse both used dot patterns with the number - but the big "stencil" GE number is unmistakable.
You are correct. The number is 337 over 948. The plate is a ladder style with 3 cross ribs (rungs on the ladder).
I suspect the 337 code suggests Zenith as the manufacturer and the 948 is probably the code for Wards.Zenith sourced a lot of tubes from Japan and others, but manufactured many of the tubes prior to the popularity of transistors. If it is an early tube it is probably a Zenith and if it is a 70s or so tube it could be just about anyone's. The six dots and the single plate with the seam sounds like a GE tube. Without a picture, I'm just making my best guess as a Zenith, sourced from GE and branded for Wards. Happened all the time...
Zenith probably had a contract to provide tubes for the Wards radios and Wards wanted their name on them. Zenith likely made some of the tubes and sourced out the rest and simply put their own code on the tube as well as the Wards code. GE tubes have etched codes in the glass and Zenith had to live with "the dots" on the glass when rebranding them prior to delivering the tubes and/or radios.
This post is made possible by the generous support of people like you and our sponsors:
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2024, Audio Asylum, all rights reserved ]
