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    • Tunekit - Filter Tuning Kit for Windows is a electronic filter synthesis program and a practical filter tuning aid for actually designing and building a working filter
    • A low pass filter circuit - A simple 7 element, Chebyshev low pass filter, rolls of at 30MHz. Attenuation is better than -40dB at 60MHz, -65dB at 90MHz, -80dB at 120MHz.
    • Using ferrite for interference suppression - Excellent guide to using ferrite cores for interference suppression. Understanding and Solving RF Interference and Noise Problems by Jim Brown K9YC Audio Systems Group, Inc. PDF File
    • TVI and BCI Filters - TVI and BCI bandpass and bandstop filters in SMD technique. Schematics and images.
    • Band Filters - Experience of band filters, for a contest multi operator enviroenment
    • 1.8-54 Mhz Low pass filter - An easy to make HF low pass filter form high power by k8cu
    • Band-Pass Filters for HF Transceivers - Do your multiple-transmitter field day or contest efforts suffer from intrastation interference ?
    • K2TR Coax Stub Filters - Multi transmitter filters
    • Clean Up Your Signals with Band-Pass Filters - These inexpensive, easily built filters can be the buffer you need between the signals you want to hear and send and those you donít!
    • KI5YN QLF Filter - The QLF filter is a microprocessor based interface designed to go between a standard Morse code key and a radio transmitter
    • Narrow Band-Pass filter for HF - Band-pass filters can be critical components in competitive stations. This setup may help put your station on the map.
    • Easy bandpass filters - Quick and easy bandpass filters for receiver input by George Dobbs G3RJV
    • Homebrew a CW Filter - An home-brewed morse code CW filter with a central frequency of 800hz and a variable bandwidth from 230hz to 26hz by F5RDH in french.
    • SSB and CW Filter - A pdf file with schematics of an ssb and cw filter AF amplifier
    • A diode-switched band-pass filter - High speed silicn diodes work well as RF switches. This article describes how to use diodes for selecting two or more filters ARRL QST article by W1FB
    • YCCC 6 Band Receive Bandpass filter - This is a 6 band receive only filter designed to protect your receiver front end and provide 45dB reject at the stop bands.
    Alphabetical
        Result Page:  [<<] 1 2
    • LC Filter Design - This is an interactive design package for designing analogue (i.e. hardware) filters made of inductors and capacitors (Ls and Cs).
      [ Hits: 1047 | Votes: 4 | Rating: 6.75 ]
    • Low Pass Audio Filter - 440 Hertz peaked low pass audio filter experiments
      [ Hits: 580 | Votes: 1 | Rating: 7.00 ]
    • Low Pass Filter Construction - Low Pass Filter Module Construction Manual
      [ Hits: 804 | Votes: 0 | Rating: 0.00 ]
    • Low Pass Filters - Article explaining electronic network of low pass filters
      [ Hits: 645 | Votes: 0 | Rating: 0.00 ]
    • Low-Pass Active Filter Designer - Javascript filter design page with introduction to low pass filters by k7mem
      [ Hits: 414 | Votes: 1 | Rating: 1.00 ]
    • Lowpass filter for 5MHz - The following lowpass filter was built using the tables in the arrl manual, it is a 5 section one and seems to work ok
      [ Hits: 175 | Votes: 2 | Rating: 4.50 ]
    • Mode J Desense Filter - This type of filter can be used in a Mode J satellite station (uplink on 2m, downlink on 70cm) to reduce the problem of the uplink signal desensing the receiver
      [ Hits: 938 | Votes: 2 | Rating: 5.00 ]
    • Narrow Band-Pass filter for HF - Band-pass filters can be critical components in competitive stations. This setup may help put your station on the map.
      [ Hits: 1580 | Votes: 0 | Rating: 0.00 ]
    • Noise Bridge Tuner Tuner - Noise bridge circuit to tune your tuner
      [ Hits: 191 | Votes: 0 | Rating: 0.00 ]
    • Notch Filter Designer - Online calculator, Butterworth Bandstop (Notch) Filter Designer
      [ Hits: 319 | Votes: 6 | Rating: 3.33 ]
    • Novel filter for sat working - Elimiate QRM when working with satellite antennas
      [ Hits: 305 | Votes: 0 | Rating: 0.00 ]
    • Online Microwave Filter Design and Analysis - This site is dedicated to design and analysis of micro- and millimeter wave filters from 0.5 to above 100 GHz.
      [ Hits: 461 | Votes: 8 | Rating: 7.50 ]
    • Passive CW headphone filter - This filter is a plug in adapter that has no batteries but gives very good performance by G8MNY
      [ Hits: 779 | Votes: 1 | Rating: 1.00 ]
    • PC Board Filters - Offer performance comparable to tin-box filters, and except for being bigger, stack up pretty well with those expensive little helical jobs. You just have to be able to make your own PC boards.
      [ Hits: 162 | Votes: 0 | Rating: 0.00 ]
    • Power netfilter - Homebrew a Power netfilter
      [ Hits: 156 | Votes: 0 | Rating: 0.00 ]
    • Receiver Band-Pass Filters - Third-order Cauer filters can boost performance of multi-transmitter, multi-operator contest stations to the next level. The filters are practical and you donít need expensive test equipment to align them.
      [ Hits: 546 | Votes: 1 | Rating: 5.00 ]
    • Roofing Filters - An Introduction to Roofing Filters by ACōC
      [ Hits: 107 | Votes: 0 | Rating: 0.00 ]
    • Second-Harmonic-Optimized Low-Pass Filters - Sometimes we need a little more output filtering than traditional designs offer. Look at a new filter that can give you that extra boost. QST article by W3NQN
      [ Hits: 567 | Votes: 0 | Rating: 0.00 ]
    • SSB and CW Filter - A pdf file with schematics of an ssb and cw filter AF amplifier
      [ Hits: 1331 | Votes: 1 | Rating: 7.00 ]
    • Stub HF filter - Multi transmitter filters for HF Bands
      [ Hits: 368 | Votes: 0 | Rating: 0.00 ]
    • The Ladder Filter - Article by Lloyd Butler VK5BR
      [ Hits: 634 | Votes: 2 | Rating: 8.50 ]
    • The NVARC Ugly Ě Filter Project - Project to build sets of band pass transmitting filters for reducing the interference between HF transceivers operated in close proximity
      [ Hits: 774 | Votes: 3 | Rating: 9.33 ]
    • Tunekit - Filter Tuning Kit for Windows is a electronic filter synthesis program and a practical filter tuning aid for actually designing and building a working filter
      [ Hits: 4310 | Votes: 8 | Rating: 5.38 ]
    • TVI and BCI Filters - TVI and BCI bandpass and bandstop filters in SMD technique. Schematics and images.
      [ Hits: 3876 | Votes: 4 | Rating: 5.00 ]
    • TVi Basics - making filters - TV Interference filters, making TVI filters, coaxial filters to eliminate TV interferences caused by radio frequency
      [ Hits: 738 | Votes: 0 | Rating: 0.00 ]
    • TVI Filter schematic - A simple TVI Filter schematic
      [ Hits: 183 | Votes: 0 | Rating: 0.00 ]
    • TVI Filters - Schematic and diagrams for TVI Filters by G4WPW
      [ Hits: 137 | Votes: 0 | Rating: 0.00 ]
    • UHF Reject filter - This filter is a 0.1 dB Tschebychev lowpass with a rejection of 90 dB or better at 430 MHz, and 0.2 dB insertion loss at 72 MHz.
      [ Hits: 1036 | Votes: 1 | Rating: 10.00 ]
    • Using Band-Pass Filters - Clean Up Your Signals with Band-Pass Filters
      [ Hits: 465 | Votes: 0 | Rating: 0.00 ]
    • Using ferrite for interference suppression - Excellent guide to using ferrite cores for interference suppression. Understanding and Solving RF Interference and Noise Problems by Jim Brown K9YC Audio Systems Group, Inc. PDF File
      [ Hits: 4070 | Votes: 6 | Rating: 9.50 ]
    • Variable bandwidth cw filter - As the sunspots return and DX propagation conditions to improve, the age old problem with QRM begins to show up on the amateur bands. Thif filter help you on improving reception
      [ Hits: 948 | Votes: 3 | Rating: 4.33 ]
    • VHF Broadcast Passband Filter - VHF Broadcast Passband Filter (88 108 MHz) by DF9CY
      [ Hits: 360 | Votes: 1 | Rating: 1.00 ]
    • W3LPL Receiving Bandpass Filters - Project of receive only filters optimized for minimal loss and very high rejection of frequencies below 75% of the filter center frequency by K1TTT
      [ Hits: 713 | Votes: 0 | Rating: 0.00 ]
    • W3NQN BPF Project - W3NQN Multiband Transmitting BPF Project
      [ Hits: 619 | Votes: 1 | Rating: 5.00 ]
    • YCCC 6 Band Receive Bandpass filter - This is a 6 band receive only filter designed to protect your receiver front end and provide 45dB reject at the stop bands.
      [ Hits: 1153 | Votes: 2 | Rating: 9.50 ]
    • YU1LM Filters - Bandpass filters designed by YU1LM/QRP. Home brew filters for amateur radio use.
      [ Hits: 301 | Votes: 2 | Rating: 4.50 ]
      Result Page:  [<<] 1 2
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