Revision 2
8
Amplifier Features
This amplifier provides the following standard features:
• 160- through 6-meter operation, full-power on six meters
• Eight conservative linear-service rated, 50-volt MOSFET transistors
• New push-pull stripline PA layout with exceptional VHF performance
• Energy-efficient solid-state design greatly reduces heat, <100-watts power line draw on
receive
• Exceptional harmonic suppression
• Operational in a few seconds, no long filament warm-up time
• Clean layout with easy-to-service modular construction
• Quiet variable-speed forced-air cooling system
• Power module current and voltage meters with LED illumination
• Accurate PEP Forward and PEP Reflected output power metering
• Power module balance metering with PA unbalance protection
• Reflected power protection
• Thermal overload protection
• Bandswitch error protection
• Easy to understand front panel LED indicators for rapid fault-error diagnosis
• Standard negative-going ALC output with front panel adjustment
• ALC metering and ALC LED indicator
• Fully-regulated external power supply
• Compact size 17.5” deep x 7” high x 10.5” wide
• Weight amplifier section 23 pounds
Introduction
The Ameritron ALS-1306 is 1200-watt nominal output, 160 through 6-meter amateur radio band,
solid-state amplifier. The ALS-1306 uses eight 50-volt, conservatively rated, linear RF
MOSFETs. These MOSFETs are specifically designed for linear power amplifier applications,
not class C or pulse service. They provide exceptionally low SSB distortion when compared to
other solid-state devices. Fan speed is regulated by temperature sensors; assuring conservative
cooling with minimal noise.
Nominal driving power is 100-watts for 1200-watts output (approximately 11 dB gain) on most
bands. The compact 10” wide by 6-1/2” high amplifier package (depth only 18”) fits nearly any
station configuration. The attractive desktop amplifier unit weighs only 24 pounds.
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