ALS 500M 

Mobile no tune Solid State Amplifier -- uses four rugged 2SC2879 high power linear RF power transistors.

--Instant bandswitching, no tuning, no warm up -- just turn on and operate -- makes mobile QSOs safer.

--Very Compact -- Just 3 1/2 x 9 x 15 Inches -- fits in nearly any mobile installation; weighs only 7 pounds.

--Extremely quiet -- quiet low speed, low volume fan stays off and silent until temperature rises.

--Output Power -- 600 watts PEP, 400 Watts CWContinuous Coverage -- 1.5 to 30 MHz 

--Load Fault Protection -- disables and bypasses amplifier if antenna has excessively h high reflected power or if 

bandswitching is set lower than exciter frequency -- virtually eliminates damage because of operating error; has Load 

Fault LED indicator.

--Thermal Overload Protection -- disables and bypasses amplifier if temperature is excessively high; automatically

 resets when temp drop to safe level Thermal Overload LED indicator.

--Excellent harmonic suppression -- multiple section output network, push-pull output circuit has

 excellent harmonic suppression.

--DC current meter lets you monitor collector current.

--ON/OFF Switch -- bypasses amplifier for "barefoot" operation without having to disconnect 

high current power supply cables.

--Remote ON/OFF Control -- lets you remote control ON/OFF function for out-of-the-way mounting of amplifier.

--Exciter Drive -- less than 100 watts input gives full output.

--Power Supply Requirements -- requires 14 VDC at 80 amperes peak current for PA transistors and separate

 line for 14 - 16 VDC at 4 amperes for control and bias circuits. Made in USA.