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Tunable Audio Bandpass Filters | Products & Suppliers ...
https://www.globalspec.com/industrial-directory/tunable_audio_bandpass_filters
Products/Services for Tunable Audio Bandpass Filters Optical Bandpass Filters - (111 companies) Optical bandpass filters are optical filters that pass one or more specified wavelength band (s) while blocking others. Bandpass filters are referred to by the wavelength range, also known as the pass band, which they are designed to transmit...
Easy Audio Bandpass Filter Kit - QRP Kits
http://www.qrpkits.com/files/AFBPF_Manual_V4_20160707.pdf
Easy Audio Bandpass Filter Kit Description and Specifications The Audio Frequency Band Pass Filter kit from qrpkits.com provides A basic audio filter kit with 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
MFJ-784B, TUNABLE DSP AUDIO FILTER - MFJ …
https://mfjenterprises.com/products/mfj-784b
Tunable bandpass filters Narrow band signals like CW and RTTY jump out of QRM when you switch in MFJs exclusive tunable FIR bandpass filters. You can tune the center frequency from 300 to 3400 Hz, and vary the bandwidth from 30 Hz to 2100 Hz -- from super-tight CW filters to wide razor-sharp Data filters.
Tunable Filters - Analog Devices
https://www.analog.com/en/products/rf-microwave/tunable-filters.html
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 de
Tektronix AF501 Bandpass Filter
http://www.barrytech.com/tektronix/tektm500/tekaf501.html
The AF 501 Bandpass Filter/Amplifier is an active filter whose center frequency is one-knob tunable over the entire audio range from 3 Hz to 35 kHz. Broad (Q = 5) and narrow (Q = 15) bandwidths are switch selectable. Flat amplification to 50 kHz is also available.
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
Tunable bandpass filter - All About Circuits
https://forum.allaboutcircuits.com/threads/tunable-bandpass-filter.17531/
SgtWookie, thanks for your help. I was using 300-2700 Hertz. Figured center would be 1660 Hz. Bandwidth is 2400. First problem is the gain must be 1. Then it gets weird. If center freq. is 1698, R3 is 5,960,859. If center freq. is 1697, R3 is -99,992,634. If center freq. is 1700 things start to get real.
Tunable SSB/CW Audio Filter
http://www.radiomanual.info/schemi/ACC_audio/MFJ-751B_user.pdf
MFJ-751B Owner's Manual Tunable CW Audio Filter 1 INTRODUCTION Thank you for purchasing the MFJ-751B Tunable CW Audio Filter. The MFJ-751B consists of a four stage, switch selectable band pass CW filter, using selected components that will make “cleaning up” CW signals effortless and easy. Featuring razor sharp selectivity with extremely steep
8 Best Free Audio Filter Software For Windows
https://listoffreeware.com/best-free-audio-filter-software-windows/
Eart Audio Editor. Eart Audio Editor is a free audio filter software for Windows. In this …
Tunable terahertz bandpass filter using MEMS ...
https://www.infona.pl/resource/bwmeta1.element.ieee-art-000008051480/tab/summary
We report on a tunable terahertz bandpass filter based on a cross-shaped slot resonator with a reconfigurable roll-up micro structures. The built-in capacitors within the resonator are electrostatically actuated to shift the resonant frequency.
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