[GreenKeys] WE 54-A and TT REC-5 rectifier info(?)...

[E.]

Hey,

Can anyone by chance (please) point me into the direction of any information about the following rectifiers?:

Teletype REC-5

Western Electric Telegraph Company 54-A (the rectifier actually has two plaques - the other says Federal Telephone & Radio Corporation FTR-313 6 AS)

Recently acquired these two and can’t find any info… would love to get to know a little more about them :) !