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493 links and 9 categories about frequency on dxzone.com

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Antennas : Antenna Calculators
  • Center-Fed Wire Dipole Antenna Tuning Calculator - Ever need a way to estimate the amount of wire to add to or remove from a center-fed wire dipole antenna to achieve resonance at a desired frequency? This article help to determine correct wire lenght.
    [ Hits: 445 | Votes: 5 | Rating: 3.60 ]
Antennas : Delta loop Antennas : Dipole
  • The Short Dipole Using Coils - A very popular method of making a short dipoles resonate at a given frequency. This type of antenna is suitable for single band, narrow bandwidth use.
    [ Hits: 334 | Votes: 0 | Rating: 0.00 ]
Antennas : Spiral
  • Spiral Antenna Theory - Spiral antenna belong to the class of frequency independent antennas. Antennas with a very large bandwidth.
    [ Hits: 357 | Votes: 0 | Rating: 0.00 ]
Antennas : VHF UHF Internet and Radio : Online Receivers
  • FRG-100 Receiver form Wellington NZ - An online receiver run by Chris Mackerell with possibility to set frequency and mode from Wellington New Zealand
    [ Hits: 942 | Votes: 5 | Rating: 5.60 ]
Manufacturers : Microwave
  • Valon Technology - Valon Technology designs and manufacturers low cost, reliable radio frequency products such as RF Synthesizer modules, RF Frequency Dividers and Phase Gain Detectors. Main markets are military/defense, test engineering, radio astronomy, research centers and universities
    [ Hits: 74 | Votes: 0 | Rating: 0.00 ]
Manufacturers : Software Defined Radio
  • Nuand bladeRF - Nuand id the maker of bladeRF - the USB 3.0 Superspeed Software Defined Radio, 300MHz - 3.8GHz RF frequency range Independent RX/TX 12-bit 40MSPS quadrature sampling
    [ Hits: 208 | Votes: 1 | Rating: 10.00 ]
Operating Aids : Time
  • Low-frequency radio time signals - Several national physics laboratories operate radio transmitters that broadcast a time code signal.
    [ Hits: 116 | Votes: 0 | Rating: 0.00 ]
Operating Modes : JT65
  • JT65-HF Project - Official web site of the JT65-HF project, the Amateur Radio software for reception/transmission of JT65A protocol with an emphasis upon its usage in the High Frequency Amateur Bands.
    [ Hits: 161 | Votes: 1 | Rating: 6.00 ]
Publications : RF Foundamentals
  • RF Basics - A PDF guide to radio and radio frequency by Martin D. Stoehr
    [ Hits: 195 | Votes: 1 | Rating: 10.00 ]
Radio Equipment : HF Transceivers : Icom IC-706 Shortwave Radio : SWL Resources Software : DSP
  • ScopeDSP - ScopeDSP analyzes sampled-data signals in the time and frequency domains. It can generate, read, write, window, and plot real and complex digital data signals.
    [ Hits: 212 | Votes: 0 | Rating: 0.00 ]
Software : Macintosh
  • iSpectrum - iSpectrum is a free spectrum analyzer for MacOS that allows you to display live audio in a standard frequency plot, waterfall display or in a stereo oscilloscope view. Used by ham radio operators, audiofiles, musicians, and Sound Technicians.
    [ Hits: 258 | Votes: 0 | Rating: 0.00 ]
Software : RF Coverage Mapping
  • CloudRF  updated - Online radio planning system, allow you to generate accurate radio frequency predictions for anywhere on earth
    [ Hits: 796 | Votes: 8 | Rating: 3.13 ]
Software : Spectrum analyzers
  • Sonograph Spektrum Analyzer - Sonogram is a highly flexible audio spectrum analyzer for the analysis of sound, music and speech signals in the frequency-domain using different algorithms.
    [ Hits: 228 | Votes: 0 | Rating: 0.00 ]
Software : Utilities
  • FRED for UR5EQF_Log3 - Displays the UR5EQF_Log3 radio frequency larger making it easer to read, sends selected list frequency to radio by AL VK4BL
    [ Hits: 107 | Votes: 1 | Rating: 1.00 ]
Technical Reference : Frequency Counter
  • Using Frequency Counters - A tutorial on using RF frequency counter, how a digital frequency counter works, includes frequency counter specifications and best practices in setting counter accuracy and resolution
    [ Hits: 186 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Microphones
  • Microphone Frequency Response - K3DAV explaining the importance of proper microphones characteristics in an amateur radio transmission, including the usage of audio equializers and professional studio microphones
    [ Hits: 129 | Votes: 0 | Rating: 0.00 ]
Technical Reference : RF Signal Generators
  • RF Radio Frequency Signal Generator - Essentials or basics of RF signal generators or microwave signal generators, their facilities, capabilities and how they work.
    [ Hits: 92 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Software Defined Radio
  • SDR Sharp Guide - Working with SDR#, adjusting frequency correction and basic setup.
    [ Hits: 826 | Votes: 2 | Rating: 10.00 ]
Technical Reference : Test Equipment : RF Probe
  • RF Probe for HF - A RF Probe circuit for the RADIO frequency experimenter to check the presence of a RF signal and also to measure its strength
    [ Hits: 265 | Votes: 0 | Rating: 0.00 ]
  • RF Probs and Watt meter - This RF probe can be used at High Frequency (HF) or Ultra High Frequency (UHF) on both 50 and 75 ohm coaxial cables.
    [ Hits: 218 | Votes: 1 | Rating: 10.00 ]
Technical Reference : Vector Network Analyzer
  • Analog HF Antenna Analyser - A simple antenna analyser for the HF spectrum with a built-in signal generator with 3-digit LED frequency display.
    [ Hits: 415 | Votes: 0 | Rating: 0.00 ]
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