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Filters and matching devices

Filters and matching devices. Articles with illustrations and detailed explanations:
144 MHz Matching Devices
Active filters on field-effect transistors
Active Low-Pass Filter (1)
Active Low-Pass Filter (2)
AF with a telegraph filter
Antenna filter for adding (dividing) VHF range signals
Antenna filter for VHF radio
Band Pass Filter
Bandpass filter on CMOS inverters
Blending circuits for transmitters
Calculation of LC-filters
Calculation of RC-filters
Calculation of strip microwave filters
Calculation of the frequency response of narrow-band microwave filters
Сomplex stereo filter - noise suppressor
Cut-off frequency of multi-link filters
Designing broadband transformers
Does the attenuator improve the dynamic range?
Filter Module for Fighting Acoustic Feedback
Filter to power the electric motor
Filter with tuning from 200 kHz to 20 MHz
Harmonic filters for SW and CB radio stations
Harmonization of electromechanical filter
Matching devices
Matching devices on ferrite magnetic cores
Methods for eliminating interference
Narrowband filter detector
Notch Filter
Option to enable electromechanical filter
Quartz transceiver filter
Range Filters
Range filters for HF ranges
Reducing heating of filter parts in processor power circuits
Separating LC filters in multiband audio power Amplifier
Simple transceiver bandpass filter
Simplified P-loop calculation
Smooth compensation bridge attenuator for a shortwave transceiver
Stereodecoder with integrated stereo input filter
Switch range low-pass filter in transistor power Amplifiers
T-contour
Telegraph filter to the receiver
Television filter
The method of pre-setting the input bandpass filters
Transceiver with quartz filter
Transmit Power Attenuator
Tunable Cavity Filters
Tunable notch filter
UHF converter with surfactant filter for narrowband AM / FM
VHF converter with notch filter
All articles of the section Assemblies of amateur radio equipment:
Assemblies of amateur radio equipment. Crystal filters
Assemblies of amateur radio equipment. Filters and matching devices
Assemblies of amateur radio equipment. Miscellaneous
Assemblies of amateur radio equipment. Modulators
Assemblies of amateur radio equipment. Oscillators, heterodynes
Assemblies of amateur radio equipment. Signal limiters, compressors
Assemblies of amateur radio equipment. Mixers, frequency converters