[MRCA] AS-2259/GR questions

doran platt jeepp at adelphia.net
Mon Oct 10 14:41:26 EDT 2005


Second try for this query.....  
I've have one of these antennas in, what appears to be, as new condition 
and complete?  In reading the various posts on the antenna and what I've 
been able to glean from a Marine Corps manual, I seem to be missing the 
coupler.  My antenna roll has all the parts on the sewn-in list "list" 
and there's no mention nor place for a coupler to be stored.  I do have 
two bottom adaptors.  One is to fit directly onto the PRC-47 antenna 
insulator, the other, a coaxial affair, is what I assume would plug into 
a coupler.  Given what's been said about the power handling capability 
of the coupler, it appears to be useless for all but genuine QRP usage.  
The Marine Corps book says the coupler is a 125ohm to 50ohm 
transformer.  Might I assume that something like a small MFJ coupler, 
installed in a suitable base mount that would accommodate the threaded 
PRC-47 bottom section would suffice the job?  I haven't laid out the 
wires yet to see how long they are but the Corps book says there's two 
symmetrical dipoles provided; one for a "high" frequency and one for a 
"lower" frequency.  I assume I could cut or add to bring it into 75 and 
40 meters.  Any insights would be appreciated.  I took an HF course at 
GW University a while back and they covered NVIS rather well, to include 
one of the original NRL and Monmouth team members as a speaker.  The 
phenomena does work... to be sure.
Regards  de K3HVG




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