Hits
Antenna big-whell
The Big Wheel is an omnidirectional antenna with horizontal polarization
post 30 Jun 2024
Antenna for UHF VHF Links →
Cross Yagi antena com polarizacao circular para satelites, PY2BBS
To design a set of LHCP circular polarization VHF and UHF antennas to work in low-orbit satellites
Coaxial dipole VHF UHF
Here is a homebrew coaxial dipole built from a small stainless whip
Dipolo bibanda VHF/UHF da finestra
Dipolo verticale bibanda 144/430 MHz un semplice, economico ed efficiente dipolo verticale da finestra
Four element 2 meter quad antenna
Each element is built on a separate hub so theantenna can be taken apart. The boom is made from common schedule 40 PVC
Half wave dipole
The simplest antenna not only for VHF, CB and the like is bipolar the so-called Dipole, can be easily assembled at almost zero costs, but has some disadvantages, such as low gain and low directionality
155
To design a set of LHCP circular polarization VHF and UHF antennas to work in low-orbit satellites
Here is a homebrew coaxial dipole built from a small stainless whip
Dipolo verticale bibanda 144/430 MHz un semplice, economico ed efficiente dipolo verticale da finestra
Each element is built on a separate hub so theantenna can be taken apart. The boom is made from common schedule 40 PVC
The simplest antenna not only for VHF, CB and the like is bipolar the so-called Dipole, can be easily assembled at almost zero costs, but has some disadvantages, such as low gain and low directionality
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