[Milsurplus] Radium at Gilbert

[WA5CAB at cs.com]

Ray,

That's interesting statistics.  I only have one recommendation.  If anyone is 
building even just mentally a list of hot, warm and cold sets, in the case of 
for example the TBX/TBO and TBY it's important to take note (record) the 
model number at least until we know that all nine TBY and all ten TBX/TBO models 
have been tested with more than one example.  We know from what you reported 
that some TBX/TBO are hot and some aren't, but we still don't know which.  And 
some will now conclude that all TBY's are hot, which we don't actually know to 
be the case.  We don't know, that I am aware of, what year radium bearing 
paint started being used.  Date ranges (probably contract date and also probably 
fiscal year) on the sets is as follows:

TBO...TBO-1      1935-36
TBX...TBX-8       1939-43
TBY...TBY-8      1940-43

As an interesting bit of trivia, description of the TBY-(*) changed from UHF 
Portable... to VHF Portable... in 1941.  :-)

Ref: SHIPS 242A 01 January 1945.

Robert Downs - Houston
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