[Milsurplus] RE:Radio in USMC Gun Motor Carriage 75mm M3

[David Stinson]

When you stop and think about it, what HF alternatives
would have been available for the Marines at that time?
LINK HF sets weren't plentiful (I don't think I've ever seen one), 
and they would have been expensive to maintain at the front.  
The Army HF sets are even bigger than the TCS.   
We already have proof they were installed in vehicles, 
that they were bought for the Marines, and that they were plentiful
with ready supplies of spares and techs already trained
in repairing them.  I collect Navy training school documents.
While I've seen many that talk about servicing GF/RU
and ATA/ARA, I've never seen any on the LINK or 
any other such uncommon set. 
About the only things available in the quantities 
needed, with the support handy and would fit in the 
space were "aircraft" sets of some kind.

The GF/RU transmitters were in effect "lock tuned" already.
No big trick to do the same for the receivers and 
two little control boxes are no problem to hang anywhere.
The set was available, would fit and, despite 
some comments to the contrary, would hold up under
the strain, at least long enough to get on the beach
and carry-out the primary fire mission. 
After that, they could be readily serviced by the available techs
and spare parts.  The broad receiver would be a plus,
as the engineers who designed them broad well knew.
Morever, it begs credulity that they would hunt around
for some exotic, custom set given the time and money 
limits under which they operated.  They had the GF/RU
sets by the truck-load.

My money's still on the GF/RU, and I'd look under
the seats and other "out of the way" places for the
mounting holes.  

73 Dave S.