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filter - QSL.net
https://www.qsl.net/n/n7eku/other/W2EEY_tuneable-peak-notch-audio-filter.pdf
A tunable audio frequency peaking and notching (rejection) filter is one of the most useful accessories you can have. Besides providing effective audio selec- tivity for ssb or cw reception, the audio filter is a useful adjunct in conducting 22 0 march 1970
Tunable notch Filters for audio frequency - Q&A - Audio ...
https://ez.analog.com/audio/f/q-a/533898/tunable-notch-filters-for-audio-frequency
The LTC1067 notch filter can be operated from a single 9V battery and then ac couple the output. Use a 5V LDO for the the LTC6990 VCO circuit. A switching regulator is not recommended for a low noise signal circuit. chuledeco on Feb 2, 2021 10:39 PM in reply to PKarantzalis952 Yes, that's why my question.
Notch Filter Circuits with Design Details - Homemade ...
https://www.homemade-circuits.com/designing-notch-filter-circuits/
A superb practical application for 10-kHz notch filters is AM (medium-wave) receivers, in which the carrier from neighboring stations generates a loud 10-kHz screech in the audio, specifically during the night. This could certainly grate on one’s nerves while tuning in …
Amazon.com: Tunable UHF Notch Filter , tunable Notch ...
https://www.amazon.com/Tunable-Filter-tunable-CH14-69-SMAconnectors/dp/B072K6BNP1
Buy Tunable UHF Notch Filter , tunable Notch Filter CH14 - 69 with F connectors: Television & Video - Amazon.com FREE DELIVERY possible on eligible purchases
Tunable Passive Audio Notch Filter - The RadioBoard …
http://theradioboard.com/rb/viewtopic.php?t=2238
Tunable Passive Audio Notch Filter Post by Bob Weaver » Fri Oct 30, 2009 8:40 am I mentioned in another topic that when trying to hear a Japanese station on 774 kHz, I was getting a 4kHz whistle from a closer station on 770 kHz.
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