[ARC5] Re: [Milsurplus] LF in a B-17?

[William Donzelli]

> As to where they would have gotten it-
> someone must have built it, because the U.S. Navy
> used it up to the early 1930s. I don't have my book on
> that handy- Westinghouse and GE come to mind among the
> builders of Navy transmitters in the 1920s.
> Can one of you Navy ship-board experts chime in?

The US Navy had quite a few LF sets - the big three were TAB, TAJ, and
TAQ. TAJs, in particular, were very sucessful designs, being in production
for 15-odd years, all the way until the TAJ-19s in 1943/44.
 
> The GF/RU apparently had this "tactical" LF/MF
> capacity added early; Mike Hanz found a GF coil
> dated 7-1-1940 that tunes 1250-1500 K.C.,
> serial number 42 built by A.R.C.

BC191/-375s could get TU-1s and TU-2s, but they were clearly low
production units ordered as needed. I have never seen one, but they
clearly were made (the went thru the TU-AA-1 to TU-1-A to TU-1-B evolution
like all the others).

William Donzelli
aw288 at osfn.org