|
|
|
|
|
|
|
← CZ Cold War Sirius →
The diagram below shows a complete SIRIUS III spy radio set in transit case,
which is part of the collection of the Police Museum
in Prague (Czechoslovakia) [2].
At the right are two units of equal size: the transmitter at the right and
the Power Supply Unit (PSU) at the centre, with the mains power cable
inbetween. To the left of the PSU are two smaller units:
the MESIC burst encoder (at the front) and the MERKUR receiver (towards
the rear). The accessories are stored at the back.
The four units are connected together by means of three short U-shaped cables
(not shown here), with the PSU acting as the central hub. The station was
supplied with cables, wire antennas, earphones and calibration crystals
(none of which are shown here).
|
As the transmitter shows great resemblance to the original SIRIUS transmitter,
we've taken the block diagram of that device as a guide. The transmitter is
VFO-operated, which means it can be set to any frequency in its range.
The VFO can be calibrated with a built-in crystal oscillator.
|
Frequency 8-16 MHz (or 3.2-7.9 MHz) Modulation A1 (CW) or F1 (500 Hz FSK) RF output 75W (with Mesic keyer, or 12W with manual key)
|
- SIRIUS III transmitter
- Mains power supply unit
- MERKUR (or MERKUR II) receiver
- MESIC burst encoder
|
|
|
|
Any links shown in red are currently unavailable.
If you like the information on this website, why not make a donation?
© Crypto Museum. Created: Thursday 20 August 2015. Last changed: Thursday, 01 March 2018 - 08:21 CET.
|
 |
|
|
|
![Complete SIRIUS III spy radio set in suitcase. Photograph Copyright Detlev Vreisleben [2].](img/sirius3_case_large.jpg)
