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Short Term Jamming Transmission
Thomas
Drescher in Rosrath, Germany, tells us that he also has received a QSL card
from a jamming transmission. Back
in the 1970s, there were several pirate radio stations operating aboard ships
anchored in open waters in the North Sea with programming beamed to various
countries in islandic and continental Europe. One of these ships was the Mebo 2 with
on air programming under the identification RNI, Radio Nordsee International,
beamed to England and Holland, though their programming at that stage was in
English and German.
The 10 kW
shortwave channel for RNI was 6210 kHz though for a few days this transmitter
channel was adjusted slightly to 6215 kHz. The Maritime Radio Station, Radio
Rogaland, located towards the southern tip of Norway, claimed that RNI was
broadcasting on a Radio Rogaland channel and so they jammed the programming
from the pirate radio ship. The continuous loop tape message in English from Radio Rogaland
stated:
This is a transmission from the Norwegian coast station Rogaland
Radio operating in single side band mode, upper side band, with a carrier frequency of
6215.0 kHz. The purpose of this
transmission is to clear the channel of unauthorized and out of band broadcasting, to improve
reception conditions for ships wishing to communicate with coast stations on this frequency or on
adjacent maritime channels.
Thomas
Drescher sent a reception report regarding the jamming transmission to Radio
Rogaland in Norway, and he received a QSL in response. The handwritten QSL text was inscribed
on the back of a photograph depicting two radio officers on duty at the control
panels of Radio Rogaland. The
QSL text verified the reception of Radio Rogaland on July 8, 1970.