AL-811HDX, HFAMP, 800W, (4)572BTUBES, EXPORT, 220VAC ARI-500 The ARB-704I2 operates with transmitters

The ARB-704I2 operates with transmitters or transceivers that pull amplifier control lines to ground

For use with the AL-1200 series of amplifiers from Ameritron

capacitor input

Two illuminated meters Two illuminated meters give you a clear picture of your AL-811 operating conditions so you can tell right away if something is wrong

They`re made with dispersed carbon particles fired in a ceramic matrix

AL-811HDX, HFAMP, 800W, (4)572BTUBES, EXPORT, 220VAC ARI-500 The ARB-704I2 operates with transmittersGet the AL 811HD with 572B tubes AL 811HD gives you the AL 811H with four 572B tubes installed. Get a higher power tank circuit and grid overload protection. Grid Overload Protection protects the tubes from excessive grid current due to mistuning and it protects against excessive drive power. Four 572B tubes give you more plate dissipation than a single 3 500Z tube. AL 811HD gives you 800 Watts output in SSB and 600 Watts for continuous duty in CW,