PTT Riyadh :

 

the voice mirror in english and arabic, recorded by Hajo Russow in 1967

 

friendly verification letter from 1972 (rb)

 

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Callsigns:
HZF ***

 

Frequencies Voice:
4530
4885
5280
6930
7630
7715
7805
18390
18995

 

Frequencies Radioteletype:
21884

 

Systems used:
50 Bd