[Milsurplus] BC-348

[WA5CAB at cs.com]

The original BC-191 spec included TU-3-A (400-800 KC) and TU-4-A (800-1500 
KC).  I've never actually seen a TU-4 but I have a TU-3-N made 1942/3.  It 
appears to me that "someone" changed the requirements slightly and that the 
TU-26-A was ordered as a match to the later BC-224's and BC-348's (or vice 
versa).  The associated dates seem to match up (1940 or early 1941).  Possibly 
someone thought SCR-193's or SCR-188's could be used to set up MF tower 
communications at advanced bases or something like that.  The TU-26 would sub 
for TU-3 for 500 KC capability in the aircraft, too.  

In a message dated 11/5/2010 7:12:20 AM Central Daylight Time, 
scr287 at att.net writes: 
> The BC-348 was usually paired with a BC-375, which
> did have provision for LF and MF coverage. So this
> brings up the questions:
> 
> 1.  Did the aircraft with the earlier BC-348 sets (without 200-500kc)
> have the LF/MF components, the TU-26 and BC-306 supplied with the BC-375?
> 
> 2.  It is a little risky to base procurement dates on nomenclature, 
> but.....
> 
> The TU-26 tuning unit for the  -375 seems a bit out of sequence,
> the other tuning units are TU-5 through TU-10. Could this be linked
> to the addition of the lower frequency band to the BC-348?
> 
> Just curious
> 

Robert & Susan Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480