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Build a 2 Meter, 5/4 Wave Antenna
This antenna is unique in that it is enclosed entirely in 3/4'' PVC which makes the design a little more complicated. The primary problem is that PVC tubing has a significant velocity factor which causes RF
post 10 Nov 2024
Antenna for UHF VHF Links →
Antena VHF yagi 5 elementos 144Mhz
Photos with measurements
Antena yagi 5 0 7 elementos para VHF
This is a commercially manufactured antenna with a gain of 9 dB, for 5 elements and 11 dB of gain, for 7 elements, according to the company that manufactures them.
Antenna Polarization Switch
A switch that would allow both horizontal, vertical, Left Hand Circular Polarization LHCP and Right Hand Circular Polarization RHCP for the 2x6 elements DK7ZB cross yagi that I made
Antenna VHF 4 elementi
Guadagno. 8,64 dBd (10,78 dBi) Rapporto F/R: 25,60 dB,Impedenza:50 ohm,I valori dichiarati sono da considerarsi medi sulla banda 144 <>146 MHz.L'ingresso non prevede
Antenna for turnstile 144.00mhz
155
Photos with measurements
This is a commercially manufactured antenna with a gain of 9 dB, for 5 elements and 11 dB of gain, for 7 elements, according to the company that manufactures them.
A switch that would allow both horizontal, vertical, Left Hand Circular Polarization LHCP and Right Hand Circular Polarization RHCP for the 2x6 elements DK7ZB cross yagi that I made
Guadagno. 8,64 dBd (10,78 dBi) Rapporto F/R: 25,60 dB,Impedenza:50 ohm,I valori dichiarati sono da considerarsi medi sulla banda 144 <>146 MHz.L'ingresso non prevede
Antenna splitter per VHF-UHF per quattro ricevitori Chi dispone di una sola antenna e vuole collegarvi più di un ricevitore necessità di uno splitter
Amateur radio kits by Kanga US
50MHz to 28MHz RX Converter The concept of the rx converter is quite simple and nothing really new. the local oscillator is a standard colpitts crystal oscillator producing the 22mhz lo signal