design frequency

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design frequency

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Antennas : 80M
  • 80 Meter Pizza Pan Antenna - This is a resonant, half-wave, vertical antenna. It takes up little space in the back yard, was designed for operation on a single frequency 80 meter PSK net, and is reasonably inexpensive to construct by Chuck Hines, K6QKL
    [ Hits: 3724 | Votes: 3 | Rating: 5 ]
Antennas : Antenna Calculators
  • Amateur Dipole Antenna Calculator - This calculator is designed to give the horizontal length of a particular dipole including Tees, antenna, or one side of it, for the frequency chosen. Enter the desired frequency and select the desired calculation from the drop box
    [ Hits: 1078 | Votes: 9 | Rating: 7.45 ]
  • Ground Plane Antenna Calculator - This calculator is designed to give the vertical length of a quarter-wave ground plane antenna, and the length of each of the four radials for the selected frequency you have entered
    [ Hits: 901 | Votes: 61 | Rating: 5.34 ]
  • 7 Element Yagi Calculator - Online javascript antenna calculator designed to give the critical information of a particular beam antenna, in this case a seven element Yagi, for the frequency chosen.
    [ Hits: 3440 | Votes: 57 | Rating: 6.72 ]
  • 3 Element Yagi Calculator - This calculator is designed to give the critical information of a particular beam antenna, in this case a three element Yagi, for the frequency chosen.
    [ Hits: 435 | Votes: 5 | Rating: 5.6 ]
Antennas : Indoor
  • 20m Indoor Loop Antenna - This antenna can gets you on the air on 14MHz, and it has a useable frequency range. The VSWR is almost perfect at the centre-frequency abd the design uses no expensive components.
    [ Hits: 664 | Votes: 4 | Rating: 6.75 ]
Antennas : Microwave Antennas : Moxon
  • Moxon Antenna Calculator  updated - Online Moxon antenna calculator. Design your moxon antenna online giving wire diameter and resonant frequency
    [ Hits: 3180 | Votes: 27 | Rating: 6 ]
Antennas : T2FD
  • T2FD Antenna - Terminated and twisted folded dipole - T2FD is a 600-900 ohms folded dipole, terminated with resistor. Feed impedance is coupled with 50/600 ohms voltage balun. It is a wide band antenna with rather low SWR over the full designed frequency range: antenna tuner is seldom needed.
    [ Hits: 482 | Votes: 0 | Rating: 0 ]
Antennas : Theory
  • Measuring 2.4 GHz Helix Antennas - It is not very difficult to design and make a helix antenna for a specific frequency and gain. It is more difficult for the serious experimenter to make precise measurements of the finished antenna.
    [ Hits: 746 | Votes: 5 | Rating: 9.2 ]
Antique Radios : Collins Collectors
  • Collins 618F-1A VHF Aircraft Transceiver - Restoring a 1965 Collins 618F-1A VHF aircraft radio. This radio was designed for light aircraft as an early frequency-synthesized radio built in 2 separate chassis.
    [ Hits: 313 | Votes: 2 | Rating: 10 ]
Manufacturers : Arduino
  • RFzero - The RFzero is a multi function signal platform developed for radio amateurs who wants to extend the Arduino skills in combination with RF. The RFzero board is largely compatible with the Arduino Zero and Arduino M0 boards, however, it has been carefully designed for flexible use in RF applications and with attention to the frequency spectrum and stability performance.
    [ Hits: 422 | Votes: 6 | Rating: 9.83 ]
Manufacturers : Filters
  • 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: 123 | Votes: 0 | Rating: 0 ]
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: 287 | Votes: 0 | Rating: 0 ]
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 : Oscilloscope
  • Gage Applied Technologies - Gage applied technologies designs and manufactures high-speed data acquisition systems, high-speed digitizers in pci / cpci / pxi or pc oscilloscopes, providing utmost measurement fidelity for high frequency signals.
    [ Hits: 548 | Votes: 0 | Rating: 0 ]
Operating Modes : Microwave
  • X Band LNA - X Band low noise amplifier, designed for 10.368 MHz operating frequency by AD6IW
    [ Hits: 391 | Votes: 1 | Rating: 1 ]
Shopping and Services : Regional : USA
  • Royal Communications International, Inc. - Since 1988, Royal Communications International has been supplying communications equipment designed for the military, professional, and amateur market. We specialize in the sale and service of High Frequency, Single Sideband transceivers that are dependable and easy to use.
    [ Hits: 139 | Votes: 0 | Rating: 0 ]
Technical Reference : Amplifiers : RF Amplifiers Theory
  • How to Design an RF Power Amplifier - This video will provide a foundation for understanding how power amplifier circuits work. If you are new to High Frequency Power Amplifier Circuit Design, this is the place to start.
    [ Hits: 673 | Votes: 1 | Rating: 10 ]
Technical Reference : Calculators
  • RF Impedance Matching Calculator - Calculates the network to match a line to a specific complex load. This online tool calculates the matching network necessary to terminate a line of the specified characteristic impedence Zo in a specific complex load impedence RL + jXL at a specified frequency.
    [ Hits: 192 | Votes: 1 | Rating: 10 ]

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