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grid current limiting to protect your tube(s)
AL-811HD gives you the AL-811H with four 572B tubes installed
they all have to be replaced
arc over or melt even under full legal power
Cool Running - A10 high by 19 wide full finned rack-mounted heatsink keeps the transistor temperatures low for long life
T-2XD3PX, ROT, PULSE T2X WITH DCU-3PX, 220 VAC SO-239 grid current limiting to protectHAM and T2X series of rotators have been improved adding a digital pulse counter to the rotators and digital controllers. Older rotators used a specially designed expensive potentiometer to determine antenna heading. Over time the pot wiper contacts get intermittent and noisy. This new design uses a special high temperature rare earth magnet and a reliable reed switch to count the rotations of one of the gears in the drive assembly. DCU 2 and DCU 3