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Ham Radio HF/VHF Antenna Lengths Chart. Here is a handy chart for determing 1/4 wave verticals, 1/2 wave dipoles, and full wave loop lengths. All antenna lengths in the information below are in feet and are the results based on the standard formula of 468 / FMhz = total length in feet.
5 cze 2021 · Here is a simple antenna calculator for two popular forms of ham radio HF wire antennas: the horizontal dipole and the inverted "V". (Updated June 5, 2021) The Antenna Calculator. for. Half-Wave Dipoles. Enter your desired frequency (MHz) of operation (i.e. 3.55).
2.1. Antenna length based on the following formulars: 1/2 λ dipole (feet)= 468 / frequency in Mhz. 1/2 λ dipole (meters) = 142.65 / frequency in Mhz. Full wave loop (feet) = 1005 / frequency in Mhz. Full wave loop (meters) = 306.32 / frequency in Mhz. Cut wire slightly longer for connecting insulators and pruning. 22-Jun-2007 09:30 AM.
The random wire antenna is probably one of the least expensive, easiest and cheapest HF antennas to use if you have a tuner and you want to get the "most" out of a length of "random" wire without having to pull out that calculator, doing the math, getting the center insulator built or bought, running the feedline, and all the rest that goes ...
Cushcraft R7 Vertical AD4IE end-fed as inverted L. 1⁄2 wave antennas can be fed from the end (voltage feed) • Inverted L is popular on 160 and 80 meters where vertical height is often lacking. Many are 1⁄4 wavelength, but some longer, which allows easy multiband operation.
End-Fed Antenna Configurations. Sloper Configuration Deployment as a Sloper configuration will DX into the greyline on 7.0-19MHz in either the morning or evening and evening NVIS propagation on 7.0MHz and lower frequencies, which will both occur in the direction of the slope.
A VHF rubber ducky or whip antenna used directly on a hand-held transmitter with no coax cable. A “random length” wire, the length of which is sometimes carefully selected to be non-resonant on any of the bands of operation, so it really isn’t very random.
