2 meter range

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2 meter range

11 links

Antennas : Quad

  • A Simple 2 Element Quad Antenna for 10 meters - Quads beams consist of 2 1 wavelength (approximately) loops, ordinarily arranged so that one is the driven element and the other is the reflector. In this project author explains how to build a two element Quad Antenna for the 28 MHz.
    [ Hits: 271 | Votes: 1 | Rating: 7 ]
Antennas : Vertical
  • Modified Ground Plane Antenna Adds Second Band - This article explains the trick of how to shorten and lengthen pairs of radials to make a 2-band ground plane antenna. Included is a "Table of Multi-Band Possibilities" covering the range of 6 to 40 meters.
    [ Hits: 53 | Votes: 0 | Rating: 0 ]
Operating Modes : Radio Direction Finding
  • A low power 3.5MHz ARDF transmitter - This low power transmitter is developed for ARDF exercising purposes but of course can be used as super QRP transmitter either. With 1 or 2 meter wire as antenna and a ARDF receiver with ferrite-rod antenna the range is about 100m but with better antennas and a 'real' receiver the range is probably much larger.
    [ Hits: 2041 | Votes: 4 | Rating: 6.5 ]
Propagation : Propagation Forecast
  • HF communication prediction tools - Online HF Communication prediction system provided by the Australian Governament Buerau of Metereology allow to predict usable frequency rage for radiocommunications between two stations allowing to specify frequency and date range. This tool allow calculation with different methods and algorithms
    [ Hits: 168 | Votes: 0 | Rating: 0 ]
Shopping and Services : CB Radio Stores
  • Cfm Communications - CB Radio and 10 through 12 meter band radio dealer. Ranger Communications factory authorized dealer. Service 10 and 12 meter and CB radios.
    [ Hits: 2415 | Votes: 2 | Rating: 7 ]
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 : HF Radios
  • Homebrew a High Performance SSB RTX for 14 MHz - This article describes the construction of a high performance transmitter and receiver for SSB (voice) communication covering the 14MHz (20 meters) high frequency amateur radio band with output range 15 to 20 watts and a top audio sound quality both on transmit and receive.
    [ Hits: 345 | Votes: 5 | Rating: 7.8 ]
Technical Reference : Radio Frequency Interference
  • Resolving 6 Meter Amateur Interference - Transmitting operations in the 50-54 MHz range offer some unique problems that over the past 50 years have stymied station owners, forcing them to tolerate quiet hours and hostility from family and neighbors attempting to enjoy other electronic services.
    [ Hits: 319 | Votes: 0 | Rating: 0 ]
Technical Reference : Receivers
  • Blocking Dynamic Range in Receivers - An explanation of the different procedures and definitions that are commonly used for blocking dynamic range (BDR) measurements. Dynamic range in general is the ratio between the weakest signal a system can handle and the strongest signal the same system can handle simultaneously without an operator switching attenuators or turning volume potentiometers
    [ Hits: 169 | Votes: 0 | Rating: 0 ]
Technical Reference : SWR Meters
  • Simple 2.4 GHz SWR Meter - This is a simple 2.4 GHz SWR meter which is based around surplus microwave hardware which can be easily found. The main component is a MECA -20/-20 dB Directional Coupler which has a frequency range of approximately 700 MHz to 2.5 GHz.
    [ Hits: 141 | Votes: 2 | Rating: 6 ]
Technical Reference : Standing Wave Ratio
  • Measuring SWR at 1296 MHz - Have you been looking for an easy way to measure power or SWR at 1296 MHz? One thing is certain, it is not easy - simply because the normal range of SWR meters that most of us have is not up to 1300 MHz.
    [ Hits: 248 | Votes: 0 | Rating: 0 ]

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