Type: SSB telephony transmitter and receiver. A solid-state design, with the exception of the PA RF stage, which uses a type TT100 valve.
Frequency Range: For Falcon I, 2 to 3.8 MHz.
For Falcon II, 6 to 22 MHz.
Frequency control for Falcon I only:
Transmitter - 2182 KHz plus 20 additional transmit channels in the 1.6-3.8 MHz band.
Receiver - 2182 KHz plus 44 additional channels in the 1.6-3.8 MHz band, plus one channel in the 170-300 kHz band (the latter for weather broadcasts).
Frequency control for Falcon II only:
The Falcon II had additional capabilities to transmit and receive in the 6, 8, 12, 16 and 22 MHz marine bands.
Power outputs: A3H 50 W, A3A/A3J 120 W pep, A1 100 W
Power input - 110/220 VAC or 24 VDC from emergency batteries.
Weight - For Falcon I - 30.8 kgs.?
Dimensions - For Falcon I transmitter/receiver: 18 1/8"W x 16"H x 13 3/8"D.
For Falcon I power supply: 15 1/2"W x 5 13/16"H x 10 3/4"D
Comment: Also produced by Debeg/Telefunken under licence from Marconi Marine as type SE735.
|Falcon I photo by John Rafter.|
|Debeg/Telefunken SE735 transmitter/receiver produced under licence from Marconi Marine. (From the seefunknetz.de web page)|
Peter G8LHF, used to work at the factory (Beehive Lane) making the Falcon I as an apprentice and then moved with the units to Marconi Marine all in Chelmsford. He adds the following."The receiver for both Falcon I and Falcon II was the same unit. However, the FII had a separate tray the same width and about 4 inches high mounted above the receiver. This was known as the "HF adaptor" thus enabling reception in the 6, 8, 12, 16 and 22 MHz bands. This is not to be confused with the "HF converter" which was mounted inside the transmitter and a real pain to align.
The Falcon was designed outside of GEC / Marconi but I do not know where. Marconi bought the the rights to manufacture the Falcon I in 1971. In 1972, my first job after a year of basic training was to rake through the remains of the previous production run of the unknown production line and salvage coils, identify them, then box. This also included the recovery of crystal filters and any other high value components like ovens. The panels at that time were beige and worn by Falcon I's.
Marconi redesigned the receiver PCB's at a location called 3 Bays (old tyre depot) in London Road Baddow. I cannot comment on who / how / when the FII appeared only to state we started with FI's and then up skilled to FIIs."
Contributors and Credits:
1) Louis Hollerman <louis(at)holleman.demon.nl>
2) John Rafter <jaw(at)naples.net>
3) SE 735 photo http://www.seefunknetz.de/735.htm