from 1971, the voice mirror tape with english and french (rb)
and in 1972, english only (rb)
a rather simple post card, but far better than no QSL at all...
(rb, 1972)
in 1974, Martin Foltz received this nice letter for verification
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Callsigns:
CGA **
CGB **
CGC **
CGF **
CJN **
Frequencies Voice:
4905
6904
10500
10520
10855
11531
12265
12301
13475
13745
16313
16320
18700
19295
19715
20183
20537