Hits
Antenna double bands 144/432 mhz
L'elemento attivo e' un dipolo aperto. L'accoppiamento con la discesa è realizzato con il sistema hair-pin derivato dal Delta-match
post 03 Feb 2024
Antenna for UHF VHF Links →
Stacking Transformation
The ideal impedance transformation ratio are actualy ZL = 50 Ohm and ZI = 100 Ohm, but to get this ideal impedance transformation means that for TR, we must use a coaxial cabel with a Characteristic impedance Zo = 70.71 Ohm
Super facil antena vhf 1/4 onda
Antenna Ground plane (GP) has the property of receiving and transmitting in an omnidirectional way, that is to say everywhere equally
Super J-Pole Collinear
The antenna J is very simple in construction and has good results
T-match for vhf -uhf Antennas
The T-Match with its balanced feed point is one method of feeding a Balanced Dipole
Antenna Yagi 11 Elements
After using the charts according to DL6WU, the following values have been encoded for the calculation
155
The ideal impedance transformation ratio are actualy ZL = 50 Ohm and ZI = 100 Ohm, but to get this ideal impedance transformation means that for TR, we must use a coaxial cabel with a Characteristic impedance Zo = 70.71 Ohm
Antenna Ground plane (GP) has the property of receiving and transmitting in an omnidirectional way, that is to say everywhere equally
The antenna J is very simple in construction and has good results
The T-Match with its balanced feed point is one method of feeding a Balanced Dipole
After using the charts according to DL6WU, the following values have been encoded for the calculation
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