[Dx-qsl] anyone familiar with this kind of callsign?

[FireBrick]

I'm transcribing a old log for a station I qsl manage.
The station was in Oman.
I'm finding a few entries for stations with a portable designator I'm not familiar with.
for instance:
A4XIZ/GFT

There are a number of logged qsos with stations with this /GFT
Anybody know what that signifies?


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A conclusion is the place where you got tired of thinking. 
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Bill H. in Chicagoland