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The Idiom Press SCAF-1 Audio Filter
https://www.hamsupply.com/wp-content/uploads/2016/07/SCAF_Review.pdf
SCAF-1 provides yet another very ef-fective one. The SCAF-1 is available in kit form ($89.95) or assembled and tested ($134.95). I opted to go with the already assembled filter from Idiom. Amateurs who have built the SCAF-1 kit report assembly times ranging from two to five hours. It may be ordered from Idiom Press, PO Box 1985, Grants Pass, OR
LogiKit SCAF-1 – Bandpass Filter - Ham Supply / Idiom …
https://www.hamsupply.com/logikit-scaf-1-noise-filter/
The new SCAF-1 filter from Ham Supply / Idiom Press makes your radio listener 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 ...
Logikit SCAF-1 - the Deceptively Simple Filter
https://qrznow.com/logikit-scaf-1-deceptively-simple-filter/
The new SCAF-1 filter from Idiom Press makes your radio listener friendly, whether you are an SSB or CW operator. Modern IF filtering design is the best ever. But the engineer still has to design an audio output that will accommodate the widest signal the radio is designed to copy. Typically, this is 6 kHz. for wide band AM or for FM.
eHam.net
https://www.eham.net/reviews/view-product?id=3075
The new SCAF-1 filter from Ham Supply/Idiom Press makes your radio listener 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 ...
New SCAF-1 Active Filter ‹ SPARKY's Blog
http://www.cqdx.ru/ham/new-equipment/new-scaf-1-active-filter/
The new SCAF-1 filter from Idiom Press makes your radio listener 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.
Idiom SCAF 1 filter - QRP Club
https://www.qrpclub.org/qrp/index.php?topic=411.0
Author Topic: Idiom SCAF 1 filter (Read 1757 times) g0iln. Able Seaman; Posts: 1; Country: ... I use a 300Hz filter in the rig and a Datong FL3 in the audio line. I think the Datong is the best analogue outboard filter in the world but Datong don't make them any more. They sometimes pop up second hand on Ebay and at rally bring and buys.
SCAF assembly manual.pdf - Idiom Press
https://www.yumpu.com/en/document/view/31321701/scaf-assembly-manualpdf-idiom-press
Your SCAF-1 filter is warranted against defects in material and workmanship for 90 days from the date of. purchase from Idiom Press or from an authorized Idiom Press dealer. This warranty does not cover damage or failure caused by or attributable to Acts of God (such as nearby
SCAF-1 - K0QVF
http://k0qvf.com/SCAF-1.htm
I do factory authorized repair on the Logikit SCAF-1 Filter. This service is available for factory assembled and kit built units. Please contact me via Email for rates and shipping instructions. On the factory assembled units the 1/8" jack is wired for earphone output and the 1/4" jack is wired for speaker output.
Switched capacitive audio filter projects • AmateurRadio.com
https://www.amateurradio.com/switched-capacitive-audio-filter-projects/
I have the Idiom press filter and the New England SCAF filter. To my ears they both seem the same but the NE/SCAF filter lets you tune down to 60Hz or very close to it. Also the other advantage of the NE/SCAF filter is that it can be built into most rigs but both will for sure zap out QRM BOB AF2Q
CW audio filter circuits | QRZ Forums
https://forums.qrz.com/index.php?threads/cw-audio-filter-circuits.420146/
Also, reading online about these, they lack a narrow CW filter, having only a 2.5 kHz wide crystal IF filter. Since I won't be building a radio, I am interested in narrow audio filters for CW. I know that there is the SCAF-1 kit from Idiom Press and the NESCAF kit from New England QRP. Do you know of any other filter kits or even schematics?
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