Ten-Tec Hercules II

Hercules II amplifier

Hercules II amplifier

This is the only piece of Ten-Tec gear left in my collection and it still works fantastic.  It is the model 420 “Hercules II” solid state amplifier and is powered by the optional factory 100 amp supply which is model 9420. The power supply will run on 120 or 220 but the latter is recommended. The 9420 supply also has a 20 amp output to run a transceiver which in most applications is a little underpowered.

This solid state “no tune” amplifier runs 10 to 160 meters and is rated at 550 watts  with 50 to 80 watts input. The unit is QSK and works well. For SSB I have been known to run it around 600 watts with no issues.  The unit has an internal fan and is pretty much silent.

In a nut shell, I could not be more pleased with this amp and really don’t have any intention to replace it anytime soon.

9420 Power Supply

9420 Power Supply