pass filter

pass filter

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• Coil Winding Tips - Tips on winding wire coils used as inductive loads, traps, band-pass filters, are implemented in a number of amateur radio projects especially antenna projects
  [ Hits: 877 | Votes: 7 | Rating: 6 ]

• K9AY 160m 80m receiving loop antenna - A K9AY loop antenna project done with Far Circuits pc boards for the antenna switch and bandpass filter and preamp by K7SFN
  [ Hits: 987 | Votes: 1 | Rating: 7 ]

• 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 ]

• HF Projects Kits - Provide service, quality home construction projects, travel antennas, masts and bases, hf and vhf amplifiers, low pass filters and z-match tuners
  [ Hits: 749 | Votes: 0 | Rating: 0 ]

• IC-706MKII filter modification - Adding a 20m band pass filter for the Icom IC-706MkII(G) by ON7EQ
  [ Hits: 501 | Votes: 1 | Rating: 6 ]

• Baofeng LPF mod by G0FTD - A modification of the UV3R Baofeng handheld transceiver to improve the built in low pass filter
  [ Hits: 404 | Votes: 0 | Rating: 0 ]

• 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 ]

• FIlters calculator - Passive Band-Pass Filter, low-pass filter calculator
  [ Hits: 417 | Votes: 3 | Rating: 2.33 ]

• Highpass filter calculator - Butterworth Highpass Filter Designer
  [ Hits: 443 | 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 ]
• 144MHz Low-Pass / 432 MHz Notch Filter - A combined 144MHz Low-Pass and 432 MHz Notch Filter by VE2ZAZ
  [ Hits: 730 | Votes: 3 | Rating: 1.33 ]
• Bandpass filters design - How to design narrowband bandpass filters
  [ Hits: 808 | Votes: 4 | Rating: 2 ]
• 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 ]
• 70 MHz low pass filter - An home made low pass filter for 70 MHz by IK0VAQ
  [ Hits: 731 | Votes: 3 | Rating: 4.67 ]
• 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 ]

• A CW Sidetone Bypass - A CW sidetone bypass for the NESCAF audio filter, a small and low cost circuit that works great.
  [ Hits: 481 | Votes: 0 | Rating: 0 ]

• TVI Filters - High pass filter schematics for TVI and examples of finished filters
  [ Hits: 1006 | Votes: 5 | Rating: 7.6 ]

• RF Sweep Generator - Hand made RF sweeper made to adjust the pass band of crystal filter
  [ Hits: 538 | Votes: 0 | Rating: 0 ]

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