frequency antenna

frequency antenna

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• 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 ]

• Dipole and Inverted V Antenna Calculator - Enter the resonant frequency for the dipole/vee antenna calculation
  [ Hits: 17188 | Votes: 66 | Rating: 5.08 ]
• Loop antenna resonant frequency calculator - Calculates resonant frequency of a loop antenna, correcting for distributed capacitance.
  [ Hits: 11418 | Votes: 54 | Rating: 4.16 ]
• Dipole Calculator in JavaScript - Input the desired resonant frequency and it will calculate lenght in inches feet and meters
  [ Hits: 4719 | Votes: 20 | Rating: 6 ]

• Shortened Center-Fed Half-Wave Dipole - Design your owm HF shiortened dipole. Includes a diagram of a lumped-constant loaded dipole antenna that is intended to fit in available space, rather than requiring a full 1/2 wavelength, at a specified frequency
  [ Hits: 2881 | Votes: 6 | Rating: 9.83 ]
• T2FD, The Forgotten Antenna - The terminated tilted, folded dipole T2FD is a little known antenna that performs excellently. Compact in size compared to a half-wave dipole the T2FD provides signal gain, wide frequency coverage, and exceptionally low noise characteristics.
  [ Hits: 4884 | Votes: 3 | Rating: 8.33 ]

• ERP Estimator - Calculate online, ERP in dB and dBi given PWR Frequency Coax lenght and type and antenna type
  [ Hits: 1668 | Votes: 5 | Rating: 3.8 ]

• KR1ST Magnetic Loop Antenna - This receive only loop covers a frequency range of about 5 MHz to 22 MHz and is built from readily available parts.
  [ Hits: 2106 | Votes: 0 | Rating: 0 ]

• Vertical antenna for Vacation - Vertical Vacation Antenna for 80, 40 and 20 Meter-Band, by Herbert OE3BMB This antenna is a full size λ/4 for 20m and 40m band, and a shortened λ/4 for the 80m band. Generally on the 40m band the SWR is under 1,6. In 80m and 20m band at the resonant frequency the SWR is about 1,1.
  [ Hits: 5037 | Votes: 4 | Rating: 8 ]

• Petlowany Antennas by K6NO - WorldRadio Article on Petlowany antennas base on this principle: if a length of wire is wound into a spiral-shaped coil and excited by a radio frequency current connected to the innermost portion of the coil, it will then, and only then, exhibit RF characteristics that closely approximate those of a resonant linear wire of the same length
  [ Hits: 3766 | Votes: 9 | Rating: 6.22 ]

• Antenna Measurements - The electrical characteristics of an antenna that are of interest to obtain by direct measurement are the frequency at which the antenna is tuned, the gain and radiation pattern
  [ Hits: 946 | Votes: 3 | Rating: 4 ]

• KC1XX Contest Station - Amateur Radio Station owned by Matt Strelow. The station is designed for competition in the multi-operator multi-transmitter category of high-frequency DX contests. Running with 7 towers 6 rotators, 8 beverage listening antennas, and 4 spotting verticals
  [ Hits: 1763 | Votes: 2 | Rating: 6.5 ]

• Multi Band Antenna Traps - These devices are called Traps, but they are actually more like frequency sensitive switches. They are parallel resonant, high Q, tuned circuits which provide a very high impedance at their frequency of resonance.
  [ Hits: 4851 | Votes: 3 | Rating: 6 ]

• The FD4 (FD3) Windom Antenna  ^{updated  pop} - The 4-band Fritzel model FD4 is a special version of a Windom antenna. It is a half-wave long on the lowest frequency, and is fed from a coax cable through a transformer inserted in the wire at one-third from one end
  [ Hits: 53321 | Votes: 96 | Rating: 5.37 ]

• The Zeppelin antenna - It consists of a radiating wire with a length equal to the half-wave of the fundamental frequency for which the antenna is cut.
  [ Hits: 2233 | Votes: 2 | Rating: 8 ]

• AOR U.S.A., INC. - AOR USA Web site, manufacturer of base and mobile receivers, handheld receivers, digital voice modems, spectrum display units, frequency monitors and antennas
  [ Hits: 2143 | Votes: 7 | Rating: 5.14 ]

• Radio Frequency Systems - RFS is a global designer and manufacturer of cable and antenna systems plus active and passive RF conditioning modules, providing total-package solutions for wireless infrastructure.
  [ Hits: 483 | Votes: 1 | Rating: 10 ]

• Anritsu - Provides technology and solutions for the electronic test and measurement, optical, rf and microwave, wireless, wired, telecommunications. Make Frequency Counters, Antenna and spectrum analyzers, power meters, signal generators
  [ Hits: 816 | Votes: 0 | Rating: 0 ]

• HF Beam Calculator - A javascipt online calculator for 2 and 3 element beam antennas. Just input frequency and will diplay element dimensions and spacing. Measurements in Feet and Meters by G4VWL
  [ Hits: 3438 | Votes: 27 | Rating: 5.45 ]

• IBP - Beacon Monitor - Linux program that helps one with monitoring the beacons of the International Beacon Project, by continuously showing which beacon is transmitting on which frequency, along with the distance and antenna directions by PA3FWM
  [ Hits: 1493 | Votes: 2 | Rating: 5.5 ]

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