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ARGOSTOLION, KEFALONIA Isl., Greece

Εθνικό Αστεροσκοπείο Αθηνών

Sunday, 26 July 2009

4 KW HF LINEAR AMPLIFIER with GU-78B by SV8JE

Modification of an RFD-1A (TMC) Linear Amplifier
PL-8295 has been replaced with GU-78B to increase power
Click to Enlarge






  Plate current:1.8A
screen voltage:360v
Grid current: 1 mA
 Input 50 ohm SWR ≤ 1.2
                Heater and High Voltage both "soft" start

                control and screen grids are overcurrent protected
       Blower delay timer: Blowers run after PA is off for better                                                         cooldown