low pas filter

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low pas filter

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Antennas : Tuners
  • Semi-automatic antenna tuner project - Thsi article describes a microcontroller driven semi-automatic antenna tuner capable of handling power levels up to 150 watts. The device is a low pass filter tuner manually tuned by setting the optimized L/C combination by hand and then storing the values into the EEPROM of the mictrocontroller to recall them later (seperately for each band from 80 to 10 meters including WARC bands)
    [ Hits: 291 | Votes: 0 | Rating: 0 ]
Manufacturers : Amplifiers
  • R3KBO EB104.ru Amateur Radio Products - R3KBO is an amateur radio club producing and developing amateur radio kits and assembled products including HF VHF Power Amplifiers or RF Power Kits and amplifier parts, low pass filfers, band pass filters, sourge protections, splitters and combiners, antenna switches
    [ Hits: 511 | Votes: 1 | Rating: 10 ]
Manufacturers : Filters
  • VA6AM Contesting Accessories - Custom built high and low power power band pass Filters, low band triplexers, triplexers and diplexers
    [ Hits: 118 | Votes: 0 | Rating: 0 ]
Operating Modes : Mobile
  • Curing Alternator Whine - How to create a low pass filter able to reduce or even remove the noise generated from your car or truck alternator
    [ Hits: 516 | Votes: 2 | Rating: 9 ]
  • A low-pass filter to remove alternator whine - How to build a low-pass filter to remove alternator whine from your car
    [ Hits: 398 | Votes: 1 | Rating: 10 ]
Software : Circuit Design
  • mini Ring-Core-Calculator - Calculate windings on ferrite cores - The program can be used to calculate inductors (coils) and their number of turns on ferrite cores, ferrite shells and air coils. These can be used for baluns, Ununs, bandpass filters, low pass filters, resonant circuits, and more. The technical specifications of the cores are already integrated in the program. Application is free and runs on Windows 32 bit versions only. To make it run on Windows 10 64 bit need to be unzipped in a single folder.
    [ Hits: 390 | Votes: 1 | Rating: 1 ]
Technical Reference : Amplifiers : HF Amplifiers
  • A600 Power Amplifier Project - This is a power amplifier project for a RF 600W 1.8 MHz to 70 MHz linear amplifier including a Low Pass Filter. Projects includes schematics, pictures, PCD design, fans details, note on PA ferrite chokes and assembling instructions
    [ Hits: 100 | Votes: 0 | Rating: 0 ]
Technical Reference : Audio
  • A switched Capacitor Audio Filter - Here is a rather nice audio filter for use with Ham Radio gear. It features switchable operation as a -32 dB per octave low pass or notch filter having a 200Hz-2500Hz tunable cutoff frequency, buffered input and output, switch selectable filter bypass function, and good stability. T
    [ Hits: 71 | Votes: 0 | Rating: 0 ]
  • 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: 157 | Votes: 3 | Rating: 5.33 ]
Technical Reference : Filters
  • 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 : QRP Projects : QRP CW Transceiver
  • 17 meter QRP Transmitter - 1-watt 17-meter cw transmitter that was originally done about 10 years ago as a club project for RAMS, the Radio Amateur Megacycle Society. It uses a VXO, rather novel at the time. It also uses a bandpass filter at the output rather than the usual lowpass
    [ Hits: 122 | Votes: 0 | Rating: 0 ]
Technical Reference : Transverters
  • Transverter for 50 70 28 MHz - This multiband transverter project features power output at 13,8V 50MHz 15W, 70MHz 10W, second harmonic <65dBc. Single N connector of antenna, suitable for a dual band Yagi. Article include Block Diagram for Dual Transverter and low pass filters
    [ Hits: 151 | Votes: 1 | Rating: 10 ]

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