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MFJ-784B, TUNABLE DSP AUDIO FILTER - MFJ …
https://mfjenterprises.com/products/mfj-784b
Description. MFJs tunable super DSP filter automatically eliminates heterodyne, reduces noise and interference simultaneously on SSB, AM, CW, packet, AMTOR, PACTOR, RTTY, SSTV, WeFAX, FAX, weak signal VHF, EME, satellite -- nearly any mode. You get MFJs tunable FIR linear phase filters that minimize ringing, prevent data errors and have "brick wall" filter response with up to …
Tunable SSB/CW Audio Filter
http://www.radiomanual.info/schemi/ACC_audio/MFJ-751B_user.pdf
form a tunable audio filter designed to clarify and remove interfering signals from both voice and digital signals. The Peak and Notch functions are variable, giving the user full control of the filter bandwidth and frequency settings. This not only allows you to remove interference, but also to enhance desired signals.
Tunable Filtering and Visualization Using Audio Plugins ...
https://www.mathworks.com/help/audio/ug/tunable-filtering-and-visualization-using-audio-plugins.html
Tunable Filtering and Visualization Using Audio Plugins Copy Command This example shows how to visualize the magnitude response of a tunable filter. The filters in this example are implemented as audio plugins. This example uses the visualize and audioTestBench functionality of the Audio Toolbox™. Tunable Filter Examples
Tunable Audio Bandpass Filters | Products & Suppliers ...
https://www.globalspec.com/industrial-directory/tunable_audio_bandpass_filters
Low-power, wide-dynamic-range bandpass filters tunable in the audio -frequency range are an important component in cochlear im- plant processors and other biomedical devices [1], [2]. Models of hearing
VEC-841K, KIT, TUNABLE CW AUDIO FILTER - MFJ …
https://mfjenterprises.com/products/vec-841k
Tunable peak filter improves CW, SSB, AM, SSTV, and RTTY signals. This tunable SSB/CW Audio filter gives you constant output when bandwidth is varied, linear frequency control and tighter, smoother notch. Works with any receiver or transceiver. Plugs into phone jack. 1 watt amplifier for external speaker. Speaker and phone jacks.
VEC-841K VECTRONICS VEC841K TUNABLE AUDIO FILTER KIT
https://store2.rlham.com/shop/catalog/product_info.php?cPath=8030&products_id=33250
Tunable peak filter improves CW, SSB, AM, SSTV, and RTTY signals. This tunable SSB/CW Audio filter gives you constant output when bandwidth is varied, linear frequency control and tighter, smoother notch. Works with any receiver or transceiver. Plugs into phone jack. 1 watt amplifier for external speaker. Speaker and phone jacks.
Tunable Filters - Analog Devices
https://www.analog.com/en/products/rf-microwave/tunable-filters.html
Tunable Filters. Analog Devices family of tunable filters includes programmable VGA, low-pass harmonic, band-pass, and band-reject portfolios to suit a large range of applications. Our devices offer an ideal filtering solution for communications, instrumentation, defense, medical, and other industries, with a flexible and robust feature set to meet the stringent demands of multiple …
MFJ MFJ-752D DSP Audio Filters, MFJ752D
https://www.hamradio.com/detail.cfm?pid=H0-001245
The MFJ-752D all mode dual tunable filter has variable bandwidth (40 Hz to almost flat); it eliminates noise and has a notch filter with a notch depth to 70 dB. You get input for two rigs (switch-selectable) a noise limiter, and more. Both units use 9 - 18 VDC or 110 VAC with the optional MFJ-1312D. Dimensions: 10W x 2H x 6D inches.
Audio Filters - Universal Radio
https://www.universal-radio.com/catftp/H028_028.pdf
The MFJ-722Bis a SSB/CW tunable 70dB notch audio filter. It has an eight pole active IC filter and uses cascaded low-Q stages. In the CW mode, four bandwidths are featured: 80, 110, 150 and 180 Hz. The center frequency is 450 Hz up to 15 dB. Requires 12 VDC. MFJ-1312D suggested. MFJ-722BOrder #0000 Disc. MFJ-1312DOrder #2433$19.95 MFJ-722B DSPKR
Easy Audio Bandpass Filter Kit - QRP Kits
http://www.qrpkits.com/files/AFBPF_Manual_V4_20160707.pdf
preamp, op-amp filter and LM386 audio amp to drive headphones or speaker. It has a peak in audio response that is tunable from approximately 300Hz to 2Khz and has a bandwidth of approximately 500Hz. It is designed to provide improved audio filtering and amplification to CW reception or other devices that may not have sufficiently narrow bandwidth.
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