ARF-500K2, ALS-500M UPGRADE KIT, W/ARI-500, ARF-500K Switch User modifiable for 28 MHz

User modifiable for 28 MHz (FCC license required)

It lets you use your linear amplifier for high power QSK CW

Each plugs directly into your wall outlet and consumes less than 1 Watt about every killowatt hour

Shipped with transformer installed and wired for 120 VAC for domestic model or 240 VAC for export model

It’s only 4 dB below 1500 Watts -- less than an S-unit -- nobody can hear the difference

ARF-500K2, ALS-500M UPGRADE KIT, W/ARI-500, ARF-500K Switch User modifiable for 28 MHzThe ARF 500K2 is an upgrade kit containing both the ARF 500K and the ARI 500 Radio Interface. The ARF 500K is a remote kit for older ALS 500M mobile amps with a serial number below #13049. Includes filter relay board for ALS 500M, ALS 500RC Remote Head, cables, hardware, and instructions. The ARI 500 Amplifier Radio Interface reads band data from your transceiver so you can automatically bandswitch your ALS 500M amplifier. Product Manuals Download