here is their voice mirror, as recorded in 1971 (rb)
this ppc dates from 1966, the 2 pictures from their building
are from a later visit in 2012 (all: Maarten van Delft)
a card from 1967 (Lars Lundström)
and here a QSL letter - pointing again to the bad frequency readout
of amateur receivers those days (rb, 1971)
------------------------------------------------------------
Callsigns:
TEL
TEM
TEN *
TIO *
TIW **
TIX
Frequencies Voice:
3230
3370
7665
7685
7985
10910
10985
13380
14575
17620