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Transponder for radar theodolite work

Transponder for radar theodolite work

Radar-theodolite transponder, 1957-1959.

Radar-theodolite transponder, 1957-1959.

1950-1955
Wind finding transponder

Wind finding transponder

IFF Mk III G.R. transponder

IFF Mk III G.R. transponder

I.F.F. Mark II transponder R3003

I.F.F. Mark II transponder R3003

I.F.F. Mark II transponder R3003

I.F.F. Mark II transponder R3003

I.F.F. Mark II transponder R3003, 1940-1943

I.F.F. Mark II transponder R3003

1940-1943
ABK-1 transponder, 1941

ABK-1 transponder, 1941

1941
MARAC-MF Intelligent Marine Transponder, Type A5102, by Geodata Systems Ltd. and Del Norte Technology Ltd., 1986. Cut-away section of tube to show transducer workings.

MARAC-MF Intelligent Marine Transponder, 1986

1986
C-Band TT and C transponder with two antennas from Inmarsat-2, by NEC Corporation, Space and Laser Communication Development Division, Japan 1984-86. Comprises: transponder, hybrid, telemetry coupler, coaxial switch, two antennas.

Transponders with antennas from Inmarsat-2, by NEC, Japan, c 1985

1984-1986
Demonstration transponder by NEC Corporation, Space and Laser Communication Development Division, Japan, 1984-86. Comprises: receiver, input multiplexer, up convertor, travelling-wave tube, output multiplexer and power supply (for travelling-wave tube).

Demonstration transponder by NEC, Japan, c 1985

1984-1986