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420 [2007/02/11 23:05]
n5na created
420 [2018/11/01 02:54] (current)
n5na [Related Links]
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 ====== Hercules II Model 420 ====== ====== Hercules II Model 420 ======
 +{{420.jpg?​150|}}{{420rear.jpg?​135|}}
 +
 +===== Description =====
 +Solid state all mode 550 watt no-tune amplifier.
 +
 +===== Reviews =====
 +  *[[http://​www.eham.net/​reviews/​detail/​111|eHam]]
 +  *CQ Magazine, 1990, August, Page 22
 +
 +===== Related Links =====
 +  *[[this>​./​webarchive/​420/​|Archived Ten-Tec Web Page]]
 +
 ===== Specifications ===== ===== 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.+  ***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.+  ***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.+  ***Drive Power:** 65 to 80 watts typical for 500 watts output.
  
-Distortion: -35 dB from 500 watt output level.+  ***Distortion:** -35 dB from 500 watt output level.
  
-Harmonics: -50 dB typical.+  ***Harmonics:** -50 dB typical.
  
-Input and Output Impedance: 50 0hms unbalanced, < 2:1 SWR+  ***Input and Output Impedance:** 50 ohms unbalanced, < 2:1 SWR
  
-Cooling: Internal forced air, rear panel exhaust.+  ***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.+  ***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.+  ***Primary Power:** RF deck, 12 to 14 volts at 100 amps, maximum.
  
-TX/RX Switching Time: 10 ms or less.+  ***TX/RX Switching Time:** 10 ms or less.
  
-Duty Cycle: 100% typical Amateur service. 10 minutes maximum continuous key-down at 500 watts output.+  ***Duty Cycle:** 100% typical Amateur service. 10 minutes maximum continuous key-down at 500 watts output.
  
-Final Amplifier Transistors.' ​Eight MRF458, or equivalent.+  ***Final Amplifier Transistors:** Eight MRF458, or equivalent.
  
-Protective Circuits: Over-voltage and overcurrent lockout. Front panel "​OVERDRIVE"​ light.+  ***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.+  ***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.+  ***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".+  ***Size:** HWD 5.25" x 12" x 14. 5".
  
-Weight 15 lbs.+  ***Weight:** 15 lbs.
  
 +===== Accessories =====
 +  *Model [[9420]] Power Supply (sold separately from amp)
 +  *Model [[9423]] Remote Control Head
 +  *Model [[9422]] DC Cable
 +  *Model [[264]] "​Y"​ Cable
 +  *Model [[236]] "​Y"​ Cable

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