|Preowned Alpha 87A, sn 91210070. Amplifier is in fair condition and has been upgraded to include AlphaMax with an external fan. This unit comes with a 3 Month warranty on the amplifier and the tubes.
Fully automatic HF amplifier covering all amateur bands, 160 m through 10 m, including the WARC bands. Amplifier includes AlphaMax and the external auxiliary fan. Well maintained amplifier that has a very clean interior.
Alpha 87A - Specifications
Continuous RF Output. The Alpha 87A is capable of 1.5kW continuous RF output on all commonly used modes and on any authorized amateur frequency from 1.8 to 29.7 MHz. Band change and tune-up are microprocessor controlled and no special cables or adapters are required.
Compatibility with popular amateur transceiver and exciters. The Alpha 87A requires approximately 50-55 watts peak RF drive for 1.5kW output. No user programming or adjustments are necessary for maximum-legal-power amateur operation into load VSWRs as high as 1.5:1. However, the amplifier may easily be user-programmed to optimize operation with VSWRs up to 2:1, on non-amateur frequencies, and at various power levels.
Capable of full CW break-in (QSK) and all digital modes when used with any appropriate transceiver. All front panel functions plus numerous other diagnostic and control functions are accessible via its RS-232 communications port.
Protective functions built in. The microprocessor-based control system incorporates protective functions that minimize the probability of accidental damage to the amplifier or its power tubes. In most cases, when one of the protective functions is "tripped," front panel LED indicators display a fault code, which indicates the nature of the problem, (e.g. excessive grid or plate current, load VSWR, etc.)
AlphaMax firmware comes with added features to readjust output network, trim tune-up time, and re-adjust loading to prevent distortion due to overdrive.
AlphaRemote software lets you to control all functions of your Alpha 87A from a compact toolbar on your Windows desktop.
Optional auxiliary cooling fan available. We recommend using the external auxiliary fan for extended RTTY or other "locked key" service. This is available separately from Alpha Radio Products.
Capable of no more than 150 watts into a 50dB load in bypass mode.