a recording of their voice mirror from 1972 (rb)
see this QSL-letter from the collection of Lars Lundström
(1966)
here is a nice QSL card (rb,
1972)
------------------------------------------------------------
Callsigns:
PJL**
PJN**
PJU**
PJY**
PJZ**
Frequencies Voice:
9892
9900
10219.5
10355.5
13394
16350
19719
19744
20632