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Whip Antenna Length And Frequency Calculator
The vertical length height of a particular whip type antenna, or the frequency of it. Enter one only one value
post 10 Jul 2024
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JavaScript Axial-Mode Helix Antenna Calculator
Circumference, Diameter, Spacing Between Turns, Length of Each Turn, Length of Wire Needed, Antenna Length
J-Pole Antenna Calculator
You can use an antenna analyser to easily find if you are too long or short
J-Pole Antennas calculator
Two types of 2 meter J-Pole antennas, one made of copper pipe and a roll-up J-pole made of TV twin lead
Kvartbolge GP calculator
This antenna is simple and inexpensive to make, while still providing a good performance
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Circumference, Diameter, Spacing Between Turns, Length of Each Turn, Length of Wire Needed, Antenna Length
You can use an antenna analyser to easily find if you are too long or short
Two types of 2 meter J-Pole antennas, one made of copper pipe and a roll-up J-pole made of TV twin lead
This antenna is simple and inexpensive to make, while still providing a good performance
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 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 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