LogiKit Filter Model SCAF-1 Bandpass Filter – Used and in “Like New” condition. Includes Audio cable for Rig to Filter, Power Supply cable and reprint manual. This is an incredible filter in a little package. Price is shipped to you. PayPal is OK. My details in QRZ are accurate. Price is $155 delivered. Sold As – Is. The new SCAF-1 filter makes your radio listening friendly, whether you are an SSB or CW operator. Using a modern but little known technology called SCAF filtering, the SCAF-1 is an active audio low pass filter offering user control of the filter cut-off frequency, yielding a stunning 96dB per octave roll-off of signals above the cut off frequency, and no white noise. It is the perfect partner for your crystal or mechanical filters. There are two controls – the in/out switch, and the low-pass cut off tuning control. By turning the single front knob, you set the audio low pass filter cut off frequency anywhere you want it from 450 Hertz to 3.5 kHz. And that’s it. Every signal or noise above the frequency you set is rolled off at 96 dB per octave. And it is done at audio frequencies – no white noise. Once you start using SCAF-1 you will never want your rig to be without it. SCAF-1 does for your audio stages what crystal or mechanical filters do for your IF stages. SCAF-1 has two output jacks (not switched), and will drive headphones or a speaker. See product reviews on eHam.net.