From a scrapped airplane we received a King ADF KR85 and a Marker Beacon
KR21.

We would like to try to put these in operation at our school for demo
purposes, but do not have the pin-out of these radios.

Who can please send us the pin-out of these radios.

Kind regards,

Jan L.F. Bos
Leeuwenborgh Aviation Engineer/Technician College
Maastricht-Aachen Airport (EHBK)