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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
    • TVI and BCI Filters - TVI and BCI bandpass and bandstop filters in SMD technique. Schematics and images.
    • 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
    • A cheap noise reducing speaker - Noise Reduction on the Cheap
    Alphabetical
    • Easy bandpass filters  new - Quick and easy bandpass filters for receiver input by George Dobbs G3RJV
      [Hits: 52 | Votes: 0 | Rating: 0.00]
    • Interactive Digital Filter Design - This is an interactive filter design package, for designing digital filters
      [Hits: 43 | Votes: 0 | Rating: 0.00]
    • 1.8-54 Mhz Low pass filter - An easy to make HF low pass filter form high power by k8cu
      [Hits: 240 | Votes: 0 | Rating: 0.00]
    • 5th order High Pass VHF Filter - Sometimes many VHF-UHF modern transceivers have problems with BROADCAST Interference and CROSS-modulation from FM commercial broadcast stations this article shows a simple Batteworth HI-Pass VHF Filter to reduce this problem
      [Hits: 34 | Votes: 0 | Rating: 0.00]
    • A cheap noise reducing speaker - Noise Reduction on the Cheap
      [Hits: 602 | Votes: 0 | Rating: 0.00]
    • 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.
      [Hits: 894 | Votes: 5 | Rating: 6.40]
    • Band Filters - Experience of band filters, for a contest multi operator enviroenment
      [Hits: 591 | Votes: 1 | Rating: 10.00]
    • Band-Pass Filters for HF Transceivers - Do your multiple-transmitter field day or contest efforts suffer from intrastation interference ?
      [Hits: 304 | Votes: 0 | Rating: 0.00]
    • 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 don’t!
      [Hits: 348 | Votes: 0 | Rating: 0.00]
    • Clean Up Your Signals with Band-Pass Filters part 2 - Part 2—You’re now much closer to saying goodbye to your unwanted signal problems!
      [Hits: 200 | Votes: 0 | Rating: 0.00]
    • Interdigital bandpass filter designer - Fill out the form to design a bandpass filter as described in the January 1985 issue of Ham Radio Magazine. These filters are generally limited to frequencies above 200 MHZ because their size is slightly longer than 1/4 wavelength
      [Hits: 74 | Votes: 0 | Rating: 0.00]
    • K2TR Coax Stub Filters
      [Hits: 448 | Votes: 2 | Rating: 8.00]
    • 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: 104 | Votes: 0 | Rating: 0.00]
    • 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: 535 | 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: 315 | 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: 32 | Votes: 1 | Rating: 10.00]
    • The Ladder Filter - Article by Lloyd Butler VK5BR
      [Hits: 56 | Votes: 0 | Rating: 0.00]
    • The NVARC Ugly ¯ Filter Project - Project to build sets of band pass transmitting filters for reducing the interference between HF transceivers operated in close proximity
      [Hits: 152 | Votes: 0 | Rating: 0.00]
    • 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: 1775 | Votes: 4 | Rating: 9.00]
    • TVI and BCI Filters - TVI and BCI bandpass and bandstop filters in SMD technique. Schematics and images.
      [Hits: 1580 | 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: 59 | 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: 296 | Votes: 0 | Rating: 0.00]
    • Using ferrite for interference suppression  updated - 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: 620 | Votes: 1 | Rating: 10.00]
    • 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: 125 | Votes: 0 | Rating: 0.00]
    • 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: 286 | Votes: 0 | Rating: 0.00]
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    Technical Reference/Filters ©1998-2008 The DXZone.com Ham radio guide Terms of Use, Copyright & Privacy Policy Last Update: Tue May 13 2008 - 08:32:04