|
|
|
|
|
|
During WWII and during the Cold War, wireless communication over long
distances was often done on the HF radio bands (short wave)
using morse code.
As the enemy was continuously trying to intercept and trace such
messages using direction finding equipment,
it was necessary to be 'on the air' as little and as short as possible.
Furthermore, it was important to make effective use of the limited
frequency space that was available, especially when sending long messages.
Many different methods have been devised over the years to reduce the
length of a message.
A method that was often used, was to replace long
sentences and frequently-used expressions by a predetermined code.
Examples of such short messages are the international Q-codes
and the use of dedicated code books. Such books were used
before and during WWII, but were not very safe.
|
As the Cold War progressed, the need to send more and longer messages
increased drastically and new methods had to be devised to avoid detection.
This resulted in the development of the Burst Encoder,
or Burst Transmitter.
A Burst Encoder is a device that allows messages to be stored
on a recording medium first. The pre-recorded message is then
sent over the air at very high speed using a play-back device.
Many solutions were developed, using a variety of media, such
as paper, audio tape, metal tape, mechanical drums and even
photographic film.
|
|
|
Messages that are sent this way often sound like a short tone
or burst, which is why it is called a Burst Transmission.
This part of the website describes a number of solutions that were
developed for high-speed burst transmission of messages.
Use the buttons on the left, check the
index of devices, or click any of the thumbnails below
for more information on a particular device.
 Index of burst encoders
USSR
|
|
|
|
Any links shown in red are currently unavailable.
If you like this website, why not make a donation?
© Copyright 2009-2013, Paul Reuvers & Marc Simons. Last changed: Monday, 06 January 2014 - 17:30 CET
|
|
|
|
