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Calculo de antenas dipolo
Calculate the length of your dipole, then you can enter your frequency of interest and see the necessary lengths for dipoles and inverted "V"
post 04 Sep 2024
Antenna Calculator Links →
Antenna Trap Design
Enter desired frequency MHz, Results inductance L (uH) Capacitance C (pF)
Butterworth Filter
Select the desired parameters below and press the synthesize button to design your Butterworth filter
Calcul antenne helice
Calculation of Helical Antenna with frequency of work, Number of turns, Wavelength m
160
Enter desired frequency MHz, Results inductance L (uH) Capacitance C (pF)
Select the desired parameters below and press the synthesize button to design your Butterworth filter
Calculation of Helical Antenna with frequency of work, Number of turns, Wavelength m
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