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Design Your Own Quad one element


Design Your Own Quad one element

Calculate the length for a single element wire quad. it uses the standard formula, 306.324 / f mhz to calculate the quad's length

post 09 Sep 2024


Antenna Calculator Links

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Design Your Own 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

Design Your Own Quad
The cubical quad antenna is a four sided antenna

Design your Own Super J Pole
Calculating the lengths of tubing to be used for the construction of a Super J-Pole

ERP - EIRP Calculator
The effective isotropic radiated Power EIRP is the apparent power transmitted towards the receiver


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