hi pass filter

hi pass filter

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• HI-Z Antennas - HF receiving systems and components, band pass filters, array controllers, HI-Z pre amplifiers
  [ Hits: 721 | Votes: 0 | Rating: 0 ]

• Anatech Electronics - Anatech Electronics manufactures RF filters for communication systems, Military and commercial, as well as RF filters for Wireless applications. Products include, Band pass filters, Duplexers, Low pass, high pass and bandstop filters. Additional products such as RF cable assembly also available.
  [ Hits: 282 | Votes: 1 | Rating: 10 ]

• 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: 1386 | Votes: 3 | Rating: 5 ]

• 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: 3095 | Votes: 31 | Rating: 7.52 ]
• ScopeIIR - ScopeIIR: an Infinite Impulse Response (IIR) digital filter design tool for Windows. It designs high-order IIR filters based on analog filter prototypes, and can design lowpass, highpass, bandpass, and bandstop filters.
  [ Hits: 778 | Votes: 2 | Rating: 5.5 ]

• High-Pass Filter Design - Online high pass filter design page with introduction to high-pass filters by K7MEM
  [ Hits: 669 | 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: 900 | 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: 1083 | Votes: 0 | Rating: 0 ]
• High Pass Filters - Understand how high pass filters are done
  [ Hits: 604 | 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 don’t need expensive test equipment to align them.
  [ Hits: 885 | Votes: 1 | Rating: 5 ]
• Highpass filter calculator - Butterworth Highpass Filter Designer
  [ Hits: 444 | Votes: 4 | Rating: 2.75 ]
• About Cavity Filters - Cavity filters are tipically circuitry behind a duplexer that allow only certain frequencies to pass
  [ Hits: 470 | Votes: 3 | Rating: 5.33 ]
• 432 144 MHz Notch Filter - Combined 432 MHz High-Pass - 144 MHz Notch Filter By Bertrand Zauhar, VE2ZAZ
  [ Hits: 514 | Votes: 1 | Rating: 1 ]
• A home-built low-pass filter for 4m - This unit uses four capacitors, only two of which are variables, and a single tapped coil. It is built in a die-cast box, and has been tested up to 80W input power on 70MHz by G4CJZ
  [ Hits: 588 | Votes: 0 | Rating: 0 ]
• 50 MHz Terminating Low Pass Filter - This low pass filter terminates all harmonics from the 2nd to above the 10th harmonic in a better than 15 db return loss load
  [ Hits: 540 | Votes: 0 | Rating: 0 ]
• Use Band Pass Filters to clean up Signals - Clean Up Your Signals with Band-Pass Filters, a two-parts article published in this PDF file from a June 1998 QST article
  [ Hits: 787 | Votes: 1 | Rating: 1 ]

• TVI Filters - High pass filter schematics for TVI and examples of finished filters
  [ Hits: 1007 | Votes: 5 | Rating: 7.6 ]

• 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: 769 | Votes: 1 | Rating: 4 ]

• TVI filters - Examples of absorbtive low-pass filters in which the unwanted high-frequency energy is separated from the wanted output and then dissipated in matched resistors
  [ Hits: 356 | Votes: 0 | Rating: 0 ]
• 144 Mhz Stop band TVI filters - A High pass filter will not help, use a stop-band filter to notch out the beast.
  [ Hits: 725 | Votes: 1 | Rating: 2 ]

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