[MRCA] Backpack GPS receiver

[Mike Feher]

Ray - 

 

I have several of the PLGR portable GPS sets. Those all suffer from the Y2K
problem. Yours might as well. It may show the true time, but not the date or
year. 73 - Mike 

 

Mike B. Feher, N4FS

89 Arnold Blvd.

Howell NJ 07731

908-902-3831

 

From: mrca-bounces at mailman.qth.net <mrca-bounces at mailman.qth.net> On Behalf
Of Ray Fantini via MRCA
Sent: Tuesday, September 30, 2025 10:21 AM
To: mrca at mailman.qth.net; MMRCG at groups.io; milsurplus at mailman.qth.net;
Aerospace_Hardware_Collectors_Group at yahoogroups.com
Subject: [MRCA] Backpack GPS receiver

 

Anyone who knows me understands that I don't only work in obsolete military
radios but also dabble in computers and other arcane devices. Picked up a
couple things at the Gilbert Red Ball show. One is a ADSID III seismic
sensor and that's an entire story on to itself but also picked up a old
backpack portable first generation GPS system. I think this is the military
version of the Magnavox MX5400 or maybe a MX6102 but have no real idea
beyond that. Unlike the older MX4102 terrestrial Navistar system I suspect
this is a GPS system being it has the 1575 MHz patch antenna. Its also
powered by a 5590 battery and comes all mounted up to a Allice frame. Anyone
have any ideas about this? Suspect that the old GPS systems had some form of
issue with date and year display but don't know if that will keep it from
displaying something. 

Attached are some pictures.

 

Ray F/KA3EKH

 



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