Air-Cooled: Quiet pressurized ventilation keeps tubes safely cooled
Flexible Interface Accepts and outputs one-of-eight control signals
6 position antenna switch
PA balance and current metering with LED back-light
Ameritron AL-82 Variants (all contain two 3-500Z graphite tubes) Base Model Includes built-in QSK-5PC switch USA 240V AL-82 AL-82Q Export 240V (includes 28MHz) AL-82X AL-82XQ Export 240V CE certified
AL-811HX, HFAMP, 800W, (4)811ATUBES, EXPORT240VAC Cooling Fan Air-Cooled: Quiet pressurized ventilation keepsOnly the AMERITRON AL 811H gives you four fully neutralized 811A transmitting tubes. You get absolute stability and superb performance on higher bands that cant be matched by un neutralized tubes. AMERITRON mounts the 811A tubes vertically, not horizontally, to prevent hot tube elements from sagging and shorting out. Others, using potentially damaging horizontal mounting, require hard to find 811A tubes to retard harmful sagging and shorting. Powerful