[amsat-bb] looking for information on amplifiers from Watkin-Johnson

Hello,

I am looking for any information on the following amplifiers:

1.) Watkin-Johnson WJ-6615-512 P1 (GaAs FET Amplifier), frequency range marked on encasing is 1.0-2.6 GHz

2.) Watkin-Johnson WJ-738-3 (Low Noise Solid State Amplifier), frequency range marked on encasing is 0.5-1.0 GHz

Both amplifiers have 110V AC power supplies attached to them. As I live in Germany and we have 220V mains I would like to modify them and operate them from a DC voltage. However I do not know the needed DC supply voltage nor the necessary polarity. Any information is highly appreciated, especially a data sheet.

Many thanks in advance for any help and best 55&73 from Germany

Matthias

www.dd1us.de http://www.dd1us.de/