Tube
Freq
Output power
Gain App.
Efficiency
Voltage
Size
Weight
2xGU74b/4cx800a
144 MHz
> 2500 Watts
17 - 18 dB
68 - 74% linear mode
220-240 Volt
46.5x43x27 CM
42 Kg
Heater and High Voltage both "soft" start
High Voltage delay timer: HV cannot turn on before the tube is ready
Cannot apply drive without HV: PA kept in STDBY (No operation is possible without HV)
HV plate line is fuse protected
The HV transformer protected by magnet circuit breaker (overcurrent breaker)
Control and screen grids are overcurrent protected (trip circuit)
Blower delay timer: Blowers run after PA is off for better cooldown
Built-in coax relay sequencer: Separate exciter & tower relay/preamp box outputs
Coax transfer relays