Super SCAF filter by Aftronics For Sale


Super SCAF filter by Aftronics
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Super SCAF filter by Aftronics:
$55.00

This is a unique \"switched capacitor\" analog/digital hybrid audio filter with 8-pole performance. There are two filters included. The first is a high-pass filterfor attenuating very low frequencies. That is followed by a high pass filter for attenuating off-channel noise or interference. Both are tunable in 100 Hz steps. The filters are both very sharp, yet without ringing. Works quite well in practice.

Built in speaker amplifier and headphone jack. Can accept audio from the transceiver headphone jack, speaker output or a fixed level data audio output.

The unit is completely described in a QST magazine article, including the schematic and operating tips. This very product is shown as the construction example. Search QST past issuesfor \"superSCAF.\"

There were not a lot of these produced. They are especially useful for shortwave listening. I like it for use with the R-390A 8 KHz mechanical filter selection, to eliminate an adjacent channel heterodyne.

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