CHALLENGERMkIII Linear Amp UK HF linear amplifier 10-160m inc. WARC 100W in 1.5KW out 1 x GS-35

The Challenger III uses a Russian GS35 ceramic triode valve. This is a very rugged valve,which is capable of producing high power for long operating periods. The Challenger will cover all the HF bands,10-160m with separate band positions for the WARC bands. There is a massive 2.2kVA toroidal transformer producing 3600V after the voltage doubler board. Cooling is forced air from a Papst flatpack blower located just under the transformer. The Challenger III features a newly designed control board, which provides protection for grid over-current, plate over-current, over-drive and internal valve flash-over. It also provides soft-start,warm-up timer,sequenced relays and high speed switching relay.

Specifications
Output power - 1500W SSB or CW Max, 1000W RTTY Max
Gain - 13dB nominal
Power requirements - 230V AC at 13A, 50/60 Hz
Frequency coverage - All amateur bands 1.8 - 29.7MHz
Valve - single GS35b ceramic triode
DC voltage - 3600V DC
Metering - Plate current, Grid current/RF O/P
Dimensions - 16in wide x 9.5in high x 17in deep 410mm x 240mm x 475mm
Weight - 29kg