The shortwave transmitting station in Usingen, north
of Frankfurt was operated by the german administration of posts
and telecommunications (Deutsche Bundespost), and besides their
own telephone and telegraph services, transmissions were made
for other customers, too. German press agency DPA
Hamburg used their transmitters, as well as DSV
Köln and MFA Bonn.
For signals in the longwave range, DBP was operating another
transmitting station in Mainflingen, east of Frankfurt. From
the many customers (KNA, DPA, epd, PIAB, VWD, DWD, ...) in the last century, only 2 are
left until today: PTB Braunschweig with
the wellknown time station DCF77, and
EFR ripple control service on DCF49.
from 1972, 2 different types of a test tape: a voice mirror...
...and a voice mirror combined with a music mirror (both: rb,
1972)
this is a real QSL card from an official german station from
1964 (Lars Lundström)
this detailed letter was
sent in 1975 to Dieter Pohlmann, at that time from 'Hamburg evening
paper' as the editing group
Joop Balneger received a
QSL-letter for a radioteletype presscast in 1980
friendly letter and PPC from german press agency 'dpa' confirming
that special transmission to ships at sea in telegraphy (rb,
1985)
------------------------------------------------------------
Callsigns:
DCF** (Mainflingen: longwave)
DF#** (Usingen: shortwave)
Frequencies Voice:
4010
4585
4883
5015
5195
6887
9140
16430
26160
Frequencies FAX Picture Transmissions:
4048
Frequencies Radioteletype:
129.1
8130.5
Systems used:
50 Bd
ASCII 200 Bd
120 rpm