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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


23cm Yagi Antenna building

23cm Yagi Antenna building Finished antenna at 1275 MHz SWR under 1:1.5 at resonant frequency

50 MHz preamp Gain 26dB with the BFG135

50 MHz preamp Gain 26dB with the BFG135 Preamps for 144 and 430 MHz, for 50 MHz, the BFG135a is a cheap transistor and in my view rather strong. It is not easily damaged by static discharge or RF power. FG connection

30 Volt Computer Power Supply Stack

30 Volt Computer Power Supply Stack A bonus was that i discovered that these did not need a standby load connected to the supply to keep them running just apply mains power and close the Start lead to ground