O.A6C 1920's South Africa
Operator: W.G. Yapp
Several cards from his collection are on this site, tnx Patrick
Rigg
The Wikipedia entry for the
S.A.R.L. says -
The South African Radio Relay League (SARRL) was formed in 1925
through the efforts of a number of regional and local radio
societies and clubs, some of which were established around the
time of the First World War. At the outset, membership was
limited to licenced radio experimenters capable of two-way
telegraphic communication by radio. Temporary headquarters for
the organization were established at Johannesburg. The first
president to be elected was Joseph White, who had earlier been
the chairman of the Transvaal Radio Society.
A detailed history of the first two years of the SARRL is hard to trace because there was no regular publication of any sort. The first effort in this direction was made some time during 1927, when a fortnightly news sheet appeared under the name "F.O. News." This publication continued for about a year, but no surviving copies exist in SARL records. "QTC" was the first printed magazine issued by the organisation. The first issue was published in May 1928. The editor was R. S. Perry, A9Z and the magazine was printed in Durban."
QSL Patrick Rigg Collection
Info from Wikipedia, Tnx G4UZN