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42 links

Antennas : 40M : 40 meter Vertical Antennas
  • Phased 40M Wire Verticals - Experiments with phased wire vertical antennas on 40 meters at VA7ST
    [ Hits: 2925 | Votes: 2 | Rating: 7.5 ]
Antennas : Array Antennas : Four Square
  • 4 Square Vertical Phased Array - Improve your 80 and 160 meter signal without a Yagi!
    [ Hits: 16765 | Votes: 9 | Rating: 4.89 ]
  • Four square phased verticals - This page is a short description of the four phased verticals system i've build and used. It is primarily intendend to be used on the lower bands 160m, 80m, 40m.
    [ Hits: 3258 | Votes: 16 | Rating: 6.76 ]
Antennas : Vertical
  • Phased Arrays - Phased arrays of short vertical antennas. A technical notes from Butternut antennas on phased vertical arrays
    [ Hits: 4730 | Votes: 9 | Rating: 6.25 ]
Manufacturers : Cable and Connectors
  • Poly Phaser - Data, RF, video protectors coax combiner protectors, grounding Items
    [ Hits: 1344 | Votes: 2 | Rating: 3.5 ]
  • MegaPhase - MegaPhase designs, manufactures and sells coaxial cable assemblies to OEMs building advanced microwave and optical electronic systems, products include test cables, test adapters, flexible and semi-rigid cables used to connect system components inside a system, and coaxial connectors.
    [ Hits: 330 | Votes: 0 | Rating: 0 ]
Manufacturers : Electronic Components
  • Anaren - Manufacturer for splitter and combiners, baluns, directional couplers hybrid couplers, modulators, mixers, phase discriminators, antenna feeds.
    [ Hits: 393 | Votes: 0 | Rating: 0 ]
Manufacturers : Lightning and Surge Protection
  • PolyPhaser - Technical experts in RF path protection
    [ Hits: 1058 | Votes: 1 | Rating: 7 ]
Manufacturers : Parts and Surplus
  • FMI - FMI provides superior solutions in the design and manufacture of frequency control devices including Voltage Controlled Temperature Compensated Crystal Oscillators (VCTCXO), voltage controlled crystal oscillator (VCXO), Temperature Compensated Crystal Oscillators (TCXO), crystal clock oscillators, high temperature oscillators, surface mount and crystal oscillator products, phase locked sources and more.
    [ Hits: 526 | Votes: 0 | Rating: 0 ]
Manufacturers : Test Equipment : Frequency Counter
  • Phase Matrix - Frequency Counter w/Selective Power Measurement, Microwave Sythesized Signal Generator
    [ Hits: 355 | Votes: 1 | Rating: 10 ]
Operating Aids : Time
  • Moon Calendar - Current moon phase and monthly moon calendar
    [ Hits: 896 | Votes: 4 | Rating: 8.5 ]
Operating Modes : MFSK
  • Introduction to MFSK and the MFSK16 - A new weak signal DX mode for Radio Amateurs, employing M-ary FSK, phase continous tones and convolutional coded FEC.
    [ Hits: 1791 | Votes: 11 | Rating: 6.73 ]
Software : Circuit Design
  • DSPRX - Signalprocessing for SSB - Direct Conversion Receiver using Phasemethod for Sideband Supression, does all necessary signalprocessing for Direct conversion Receivers using IQ-mixer for demodulation.
    [ Hits: 2476 | Votes: 0 | Rating: 0 ]
Software : Filter Design
  • AADE Filter Design - Dowwnload this free windows programs to design Butterworth, Chebyshev, Elliptic (Caur), Bessel, Legendre and Linear Phase low-pass, high-pass, band-Pass, and band-reject filters. Coupled Resonator band-pass filters
    [ Hits: 24825 | Votes: 113 | Rating: 7.16 ]
Software : PSK31
  • PropNerPSK - PropNetPSK is a PSK (Phase Shift Keying) program capable of receiving multiple signals (2 - 16) at one time for the exclusive use to decode a properly formatted PropNetPSK beacon signal. If you are looking for a Keyboard to Keyboard type of program, this will not fit your bill.
    [ Hits: 823 | Votes: 1 | Rating: 10 ]
Software : Spectrum analyzers
  • Spectrum Analyzer Real-time FFT - Eight-channel Audio Spectrum Analyzer is a set of Real-Time Multi-Channel Gauges for investigation of data accepted from any ADC you will want or 16-, 24- and 32-bit ADC of sound card. WDM drivers support. FFT Spectrum Analysis, OscilloScope, Frequency counter, AC/DC voltmeter, Signal-to-Noise Ratio, Signal-to-Noise and Distortion, Spurious-Free Dynamic Range, Effective Number Of Bits, Total Harmonic Distortion, Inter-Modulation Distortion, Phase Shift. Special modes of dual-channel FFT spectral analysis: Separate channels spectra, Spectra of digital sum, difference, product of two signals, Spectrum of digital product of original signal and its fundamental, Spectrum of Real and Complex Transfer Function, Cross Spectrum. Standart weighing of spectra according IEC and CCIR. Oscilloscope modes (for dual-channel ADC) are: original signals, sum, difference, dependence of one channel on another, amplitude distribution of input signals.
    [ Hits: 11313 | Votes: 9 | Rating: 7.77 ]
Technical Reference : Audio
  • Audio Spectrum Analyzer - OscilloMeter  pop - Audio Spectrum Analyzer for Real-time, FFT, OscilloScope, Frequency counter, voltmeter, noise and distortion meter, phase shift meter. Multi-Tone Sound Frequency Sweep Generator. White, pink noise.
    [ Hits: 89789 | Votes: 328 | Rating: 6.2 ]
Technical Reference : Radio Frequency Interference : Noise Reduction
  • QRM and noise reduction - You will find on these pages my experiences and results on antennas and local/non-local QRM/noise reduction. Using a broadband vertical active magnetic loop and a home made / designed broadband amplifier. Two vertical magnetic Alford loops are used in an array. Analog and Digital Signal Processing and a dual phase coherent Software Defined Radio (SDR) are used. By PA0SIM
    [ Hits: 5085 | Votes: 6 | Rating: 7 ]

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