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Types of Coax Cable and Line Loss Calculator
Simple program gives a very close approximation for additional losses due to SWR
post 28 Jul 2024
Antenna Calculator Links →
Design Frequency Gain/Boom Length Reflector Spacing and Director
Experiment with a yagi design
Toroidi Amidon: quanto filo per l'avvolgimento, IZ4SJP
Il programma calcola l'induttanza di un avvolgimento monostrato in aria - The program calculates the inductance of a single-layer winding in air
Half-wave Dipole Antenna Calculator
Dipoles antennas are easy to build and can be very effective when placed half a wavelenth or more above ground.Enter the desired operating frequency in megahertz to get a good starting length for a dipole in both feet and meters
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Experiment with a yagi design
Il programma calcola l'induttanza di un avvolgimento monostrato in aria - The program calculates the inductance of a single-layer winding in air
Dipoles antennas are easy to build and can be very effective when placed half a wavelenth or more above ground.Enter the desired operating frequency in megahertz to get a good starting length for a dipole in both feet and meters
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