Ameritron's ARF-1000 is a filter designed to use with a transceiver or an amplifier that produces unwanted harmonics.

It has a frequency select switch to select one of six different frequency ranges. Covers 1.5 to 30 MHz. When the filter is selected for the operating band it will reduce harmonics above the cut-off frequency.

The ARF-1000 can handle input power of 1 kW SSB, 600 Watts CW or 400 Watts RTTY. SWR is less than 1.3:1 in all amateur radio bands.

SO-239 connectors for input and output.

Measures a compact 5«"W x 3«"H x 9«"D.