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Hercules II Model 420
Description
Solid state all mode 550 watt no-tune amplifier.
Reviews
- CQ Magazine, 1990, August, Page 22
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Specifications
- Operating Frequency Range: General coverage 1.6 to 22.000 MHz. Modification for 22.000 to 30.000 MHz is available for authorized users.Coverage is in seven bands which are front panel or rear panel remote selectable.
- RF Power: 1000 watts input. 500/600 watts output, depending on frequency and load impedance.
- Drive Power: 65 to 80 watts typical for 500 watts output.
- Distortion: -35 dB from 500 watt output level.
- Harmonics: -50 dB typical.
- Input and Output Impedance: 50 ohms unbalanced, < 2:1 SWR
- Cooling: Internal forced air, rear panel exhaust.
- Metering: Switch selectable forward power, SWR, Icc (collector current) and Vcc (Voltage). Ten element LED bar graph displays peak output power.
- Primary Power: RF deck, 12 to 14 volts at 100 amps, maximum.
- TX/RX Switching Time: 10 ms or less.
- Duty Cycle: 100% typical Amateur service. 10 minutes maximum continuous key-down at 500 watts output.
- Final Amplifier Transistors: Eight MRF458, or equivalent.
- Protective Circuits: Over-voltage and overcurrent lockout. Front panel "OVERDRIVE" light.
- Front Panel Controls: Multi-meter control switch. power on-off switch and band select switch.
- Rear Panel Connections: RF in, RF out, DC input. TX/RX control jacks and remote control socket.
- Size: HWD 5.25" x 12" x 14. 5".
- Weight: 15 lbs.