Hits
For line-of-sight radio or microwave
Frequency GHz,transmit antenna diameter m,transmit antenna aperture efficiency e.g. 0.65
post 10 Sep 2024
Antenna Calculator Links →
Inductance of a Solenoid
Resonance in AC circuits implies a special frequency determined by the values of the resistance
Super J-Pole Collinear
The central hairpin separating the two 5/8, can be made with 4 mm2 hard copper wire or even with a piece of copper serpentine
Transmission Line Calculator
An excellent program to check the results for lossy lines is TLA
SWR Calculator 1.2 Jeff McClay
160
Resonance in AC circuits implies a special frequency determined by the values of the resistance
The central hairpin separating the two 5/8, can be made with 4 mm2 hard copper wire or even with a piece of copper serpentine
An excellent program to check the results for lossy lines is TLA
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