Hits
Taktenna Antenna Project
experimental antenna similar to the TAK-tenna spiral antenna and was evaluated for SWR response over the frequency range of 7.0 to 7.3
post 25 Jan 2024
Spiral antenna Links →
40m OCF Spiral Dipole
This antenna is an off-center fed spiral dipole for 40 meters, based on KN9B’s spiral dipole
Archimedean Spiral Antenna for RTLSDR
An Archimedean spiral made of two equal lengths of coaxial cable seems to be the easiest circularly polarized antenna to make that'll cover a broad range of the rtlsdr dongles' E4000 tuners
9
This antenna is an off-center fed spiral dipole for 40 meters, based on KN9B’s spiral dipole
An Archimedean spiral made of two equal lengths of coaxial cable seems to be the easiest circularly polarized antenna to make that'll cover a broad range of the rtlsdr dongles' E4000 tuners
Take off angle of horizontal antenna For horizontal polarization, the electric field will move sideways on a horizontal plane, while for vertical polarization it will oscillate up and down on a vertical plane
Rx antennas 4Square Rx Vertical Array My frequency design of 1.825 MHz a 90 degrees line would be 33,70 metersinstead of the previously calculated 33,27 m
Calculo da Antena Bazooka A double bazooka antenna is a combination that has a complete coaxial wave multiplied by its velocity factor and a total end-to-end length of 1/4 wave for each side affected by another driver shortening facto