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6 position antenna switch
A fourth scale switches among peak reflected power (and SWR)
Flexible Interface Accepts and outputs one-of-eight control signals
they all have to be replaced
PA balance and current metering with LED back-light
AL-811HX, HFAMP, 800W, (4)811ATUBES, EXPORT240VAC Cooling Fan 6 position antenna switchOnly 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
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