Calculator Ground Plane

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Calculator Ground Plane

The standard ground plane antenna consists of a vertical radiator which is insulated and centered between 4 horizontal surrounding radials which extend out from the base of the antenna

post 18 May 2024

Calculator Ground Plane

Antenna Calculator Links →

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Discone Antenna Calculator
An interesting application note about WLAN discones 2.4 to 5 GHz by Clemens Verstappen

eHamRadio Antenna Calculator
1/2 Wavelength Dipole length L(feet) = 468/f(MHz).Length L(meters) = 142.5/f(MHz)

Electronics Converters and Calculators
Below is a list of electronics based calculators, conversion charts

Antenna splitter per VHF-UHF per quattro ricevitori

Antenna splitter per VHF-UHF per quattro ricevitori Chi dispone di una sola antenna e vuole collegarvi più di un ricevitore necessità di uno splitter

Kits and Components

Amateur radio kits by Kanga US

50MHz to 28MHz RX Converter

50MHz to 28MHz RX Converter The concept of the rx converter is quite simple and nothing really new. the local oscillator is a standard colpitts crystal oscillator producing the 22mhz lo signal

20 meters Cage Dipole I badly needed an antenna for 20 meters. It was when the Cage Antenna solution came to my mind

Antenna Half Sloper Multiband 1.8, 3.5, 7, 14, 21, 28 MHz I made about 25,000 QSOs on it mainly in international contests - in 1.8, 3.5, 7, 14, 21, 28 MHz bands. The antenna also works effectively in WARC bands

160M 1/4 Wave Vertical 160m vertical antenna project. It is 100' of Rohn 25G and a 20' aluminum stinger. The base is made out of four 6' power line insulators sandwiched between two Rohn base plates. 7/8' stainless bolts hold the assembly together. 32 radials 50' long and 30 radials 100'

DHD Double Half Delta This is a dhd double half delta in theory it should return a low signal but with a good s - n ratio roughly like a beverage

30 meter full quarter wave vertical A view of the antenna and stand from a few feet away. You can't see the radials but they are there. There are four of them spaced 90 degrees apart and about a 10 to 15 degree slope. The antenna has about a 1.2-1 SWR on 30 meters. Notice the trees in the background. Does it look like the wind is blowing? It is as is usually the case out here

Convert ADIF to Cabrillo Format

Convert ADIF to Cabrillo Format Have an ADIF file from amateur radio contesting, but the contest you want to enter wants a Cabrillo-formatted file? This is the tool that you need

40m center loaded vertical antenna

40m center loaded vertical antenna Vertical of 5 meters with central traps for 40m

Diy Arduino CW keyer

Diy Arduino CW keyer I added code to read push-buttons on digital pins to trigger hard-coded messages like CQ and CQ SOTA