Trophies won by the Lothians Radio Society were shown before their return to the RSGB

LRS President Colin Wright GM4HWO showed the trophies won by the club in 2008-9

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“Aviation Transponders – from IFF to ATCRBS to Mode S to ADS-B”

by David Stockton GM4ZNX

LRS member David Stockton gave a most interesting and amusing talk on the history of equipment for identifying aircraft on radar for military / defensive purposes and modern Air Traffic Control. He ended by showing a modern miniaturized transponder for general aviation use (private aircraft), made by his company.

David Stockton GM4ZNX with a number of transponders which he described in his talk.

 

A modern miniaturized transponder with separate control panel unit, for use in General Aviation.