high pass

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high pass

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Antennas : 160M
  • G3YXM Small Loop - This simple antenna is capable of remarkable results on 160, 80 and 40 metres. Forming a triangle from around 50 feet of satellite TV coaxial cable, the top of the triangle can be as low as 15 feet, and the lower side just high enough to prevent a passer by hanging themselves
    [ Hits: 3760 | Votes: 2 | Rating: 9 ]
Ham Radio : Clubs : North America : USA : Wisconsin
  • The NorthEast Wisconsin DX Association - The NorthEast Wisconsin DX Association (NEWDXA) was established in December 1993 by twenty-one amateurs from the region who shared an interest in DX'ing and Contesting. Those individuals came together because of this interest and the additional interests in communicating with others, maintaining high operating and technical standards, and their passion for DX'ing.
    [ Hits: 94 | Votes: 0 | Rating: 0 ]
Manufacturers : Filters
  • 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 ]
  • Microwave Filter Company - Microwave Filter Company is a leader in the design, development and manufacture of high quality passive electronic filter products in the 5 Hz to 50 GHz frequency spectrum.
    [ Hits: 124 | Votes: 0 | Rating: 0 ]
  • VA6AM Contesting Accessories - Custom built high and low power power band pass Filters, low band triplexers, triplexers and diplexers
    [ Hits: 119 | Votes: 0 | Rating: 0 ]
Manufacturers : Microwave
  • Kuhne Electronic - High quality microwaves components for professional and radioamateurs. Power Amplifiers, Low Noise Amplifiers, Es hail 2 Converter Transverter, Signal Sources, Passive Components and Accessoires
    [ Hits: 105 | Votes: 0 | Rating: 0 ]
Operating Modes : Ham Radio Balloons
  • High Altitude Ballooning, From The Ground Up (and back again) - High Altitude Ballooning makes for a challenging project that sometimes turns into an engrossing hobby. Whilst it is not rocket science it does encompass a wide range of fields (sometimes literally) and there is a lot to learn before you send your first flight up into the sky.
    [ Hits: 136 | Votes: 1 | Rating: 10 ]
Operating Modes : Satellites : CubeSats
  • FunCube Dongle HF Upconverter: Expanding Reception Range  new - This article describes an HF upconverter for the FunCube Dongle Pro. Designed for radio amateurs, the converter extends reception capabilities to lower frequencies (0 Hz to 30 MHz) by mixing them with a higher oscillator frequency (100 MHz). This translates the desired signal into a range detectable by the FunCube Dongle (64 to 1,700 MHz). Key components include a double-balanced mixer and a low-pass filter to suppress unwanted signals. The project provides schematics, filter specifications, and design considerations for construction.
    [ Hits: 34 | Votes: 1 | Rating: 8 ]
Software : Filter Design
  • 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 ]
Technical Reference : Audio
  • JRC NVA-88 Modification - Adding 2 RCA inputs, 1 high impedance filtered audio output RCA 3, 3 HIGH PASS filters, 3 LOW PAS filters to the JRC NVA88 Speaker
    [ Hits: 54 | Votes: 0 | Rating: 0 ]
Technical Reference : Calculators
  • Bandpass Filter Calculator - Passive Bandpass Filter online calculator and filter formulas. Active Inverting Op Amp Bandpass Filters, Active Noninverting Op Amp Bandpass Filter, just enter the Low ir High Cutoff Frequency
    [ Hits: 162 | Votes: 3 | Rating: 5.33 ]
Technical Reference : Filters
  • Highpass filter calculator - Butterworth Highpass Filter Designer
    [ Hits: 443 | Votes: 4 | Rating: 2.75 ]
  • 432 144 MHz Notch Filter - Combined 432 MHz High-Pass - 144 MHz Notch Filter By Bertrand Zauhar, VE2ZAZ
    [ Hits: 514 | Votes: 1 | Rating: 1 ]
  • Enhancing Frontend Performance with Optimized Band Pass Filters - This article explores the nuanced design challenges of Band Pass Filters (BPF) in radio receivers, balancing low insertion loss, high stop band rejection, and narrow bandwidth. The focus is on the "Series-Trap, Shunt-C" topology, resonator count impact, and meticulous layout design for superior stop band performance across various frequency bands
    [ Hits: 82 | Votes: 0 | Rating: 0 ]
Technical Reference : Radio Frequency Interference
  • TVI Filters - High pass filter schematics for TVI and examples of finished filters
    [ Hits: 1006 | Votes: 5 | Rating: 7.6 ]
Technical Reference : Spectrum Analyzers
  • A Simple Spectrum Analyzer - This is a swept-filter spectrum analyzer. Basically, RF and swept oscillator signals are fed to a mixer and the output of the mixer is passed through a highly selective crystal filter.
    [ Hits: 120 | Votes: 0 | Rating: 0 ]
Technical Reference : TVI Filters
  • 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: 723 | Votes: 1 | Rating: 2 ]
Technical Reference : Transverters
  • Innovative 2m to HF Converter - Ulrich L. Rohde N1UL conceived an outstanding 2m to HF receiving converter with specific requirements, including 144-148MHz to 28-32MHz coverage, low noise, high IP3, and a unique modular design. The design decisions emphasize modularity, absence of preselection, stability, and a passive mixer, showcasing Rohde's distinctive approach.
    [ Hits: 90 | Votes: 0 | Rating: 0 ]

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