Airborne Speed Measuring
Radar
Transmitter/Receiver and Antenna Type No. 9307MR1
Made by Decca Navigator
Not quite a radio but a wonderful example of plumbing
for J-Band which is 10-20GHz
The first view shows the electronics cover held in
place with a couple of dozen quick release screws
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The second view shows
an orange aluminium cover protecting the aerial assemblies |
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Removing the protective
cover exposes the send and receive aerials which are constructed
from aluminium waveguides |
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This picture shows
a close-up of sections of the waveguides |
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A view under the black cover showing a set of five
printed circuit board assemblies each carrying a pair of circuit
boards generally using "54" series TTL logic chips.
"54" is the code for the expensive military version
of commercial "74" series integrated circuits.
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On the following pages
I'll take you on a tour of the equipment. |