pass filter

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pass filter

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Manufacturers : Antenna Parts
  • HI-Z Antennas - HF receiving systems and components, band pass filters, array controllers, HI-Z pre amplifiers
    [ Hits: 562 | Votes: 0 | Rating: 0 ]
Manufacturers : Digital and Packet Radio : TNC
  • Cross Country Wireless - UK manufacturer of ham radio accessories, including TNX, SDR receivers, RF Diplexers Triplexers, bandpass filters, iambic memory keyers.
    [ Hits: 1157 | Votes: 3 | Rating: 7 ]
Radio Equipment : HF Transceivers : Elecraft K2
  • K2 Change 20 30m band filter - Elecraft K2 mod. Narrower bandpass filter, better stopband attenuation
    [ Hits: 161 | Votes: 0 | Rating: 0 ]
Radio Equipment : HF Transceivers : Ten-Tec Jupiter
  • Ten-Tec Jupiter 538 Repair - Low-pass filter relay and reverse polarity repair notes by VE7TK
    [ Hits: 892 | Votes: 1 | Rating: 8 ]
Radio Equipment : VHF-UHF Handhelds : Baofeng UV-3R
  • Baofeng UV-3R Low pass Filter Mod - This page describes a fix to the Low Pass Filter that provides more filtering of the second harmonic of 144-148 MHz.
    [ Hits: 1192 | Votes: 3 | Rating: 5 ]
Shopping and Services : Regional : Australia
  • MiniKits.com.au - Australia's largest range of Electronic Kits & Components In Stock for the Radio Experimenter, ATV, microwaves, HF Band pass filters
    [ Hits: 630 | Votes: 0 | Rating: 0 ]
Software : Filter Design
  • Windipoles - Windipoles is a free passive real time filter simulator. Developed under Visual Studio .NET. No software installation required. Allows design, analysis, optimizations and plots, all graphically.
    [ Hits: 2857 | Votes: 30 | Rating: 7.44 ]
Technical Reference : Audio
  • Low Pass Audio Filter - 440 Hertz peaked low pass audio filter experiments
    [ Hits: 831 | Votes: 1 | Rating: 7 ]
Technical Reference : Filters
  • High-Pass Filter Design - Online high pass filter design page with introduction to high-pass filters by K7MEM
    [ Hits: 564 | Votes: 2 | Rating: 1 ]
  • Bandpass and I.F. Filters - On this page a popcorn highpass filter, some inductors and their Q , double tuned bandpass filters and simple Cohn Crystal ladder IF filters are presented.
    [ Hits: 803 | Votes: 0 | Rating: 0 ]
  • 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: 910 | Votes: 0 | Rating: 0 ]
  • High Pass Filters - Understand how high pass filters are done
    [ Hits: 536 | Votes: 0 | Rating: 0 ]
  • Using Band-Pass Filters - Clean Up Your Signals with Band-Pass Filters
    [ Hits: 585 | Votes: 0 | Rating: 0 ]
  • 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: 726 | Votes: 1 | Rating: 5 ]
  • VHF Broadcast Passband Filter - VHF Broadcast Passband Filter (88 108 MHz) by DF9CY
    [ Hits: 481 | Votes: 1 | Rating: 1 ]
  • Bandpass Filters for Portable Usage - These are QRP rated 3 Pole Butterworth filters based on a design by K4VX, feature simplicity, almost no insertion loss, and reasonable rejection on the other ham bands.
    [ Hits: 399 | Votes: 0 | Rating: 0 ]
  • 440Mhz Interdigital Bandpass Filter - Homebrew Amateur Radio 440Mhz Interdigital Bandpass Filter
    [ Hits: 441 | Votes: 1 | Rating: 1 ]
  • Constant k Lowpass Filter Design - Online Constant - k Lowpass Filter calculator
    [ Hits: 364 | Votes: 12 | Rating: 3.67 ]
Technical Reference : QRP Projects : QRP CW Transceiver
  • The Rock-Mite CW Kit - The Rock-Mite is a 40m CW kit offered by Small Wonder Labs . It features built-in keyer, direct conversion receiver with a crystal RF bandpass filter, 500 milliwatts of power, and switchable frequency offsets to work around QRM
    [ Hits: 1072 | Votes: 0 | Rating: 0 ]
Technical Reference : Receivers
  • 30 m Band Direct Conversion Receiver - The direct conversion receiver described consists of only a bandpass filter, mixer IC, VFO and audio filter. With only 22 parts, this simple circuit should take a few hours at the weekend to construct.
    [ Hits: 618 | Votes: 1 | Rating: 4 ]

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