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RF Impedance Matching Calculator
Calculates the network to match a line to a specific complex load
post 22 Sep 2024
Antenna Calculator Links →
AM Loop Antenna Calculator
Below you will find plans to build a three or four foot box loop for the AM broadcast band
Design Your Own Dipoles And Inverted Vees
The formula for these types of antennas vary from about 476/f Mhz to 490/f MHz depending on the band and the height above ground!
Double Extended Zepp NVIS Antenna Calculator
The measurements below are for building a Double Extended Zepp Near Vertical Incident Skywave NVIS Antenna
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Below you will find plans to build a three or four foot box loop for the AM broadcast band
The formula for these types of antennas vary from about 476/f Mhz to 490/f MHz depending on the band and the height above ground!
The measurements below are for building a Double Extended Zepp Near Vertical Incident Skywave NVIS Antenna
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
Interface-for-digital-broadcasts-with-integrated-audio 4-port HUB, with a TUSB2046. With port 1 of the HUB we drive the FT232RL; with port 2 the PCM2904, furthermore, we decided to leave ports 3 and 4 free