Hits
Antenna Quad 144 MHz
6 elementi con l'adattatore di impedenza serve per trasformare l'impedenza bilanciata del radiatore di circa 200 Ohm in una sbilanciata da 50 Ohm
post 01 Feb 2024
Antenna for UHF VHF Links →
2m Antennen Preamplifier Vorverstaerker
With a gas-fet CF300, and switchable gain between 14 and 24 dBD, noise figure better than 0.9dB, continuity damping better than 0.2 dB, transmittable power 750 W PEP to 2 meters with these prinelais
2 Meter & 70 Centimeter Mobile Halo
2 m 70 cm dual band antenna, horizontally polarized antenna, with aluminum rod for the radiant element and also copper tube
2m Band VHF Antenna Pre-Ampilfier
I have an old VHF transceiver a little-bit "deaf"! By adding the following VHF pre-amp as 1st stage, the improving of sensitivity is spectacular
2m. Band VHF Collinear with 2 Dipoles
After the dipoles and coaxial cables placement into the mast, its time for the final tuning
2m. Band VHF Dipole with Gamma match system
Collinear antenna project, wich gives a gain of about 5,1 DBi with 2 dipoles and 8,1 DBi with 4 dipoles Omni directional
155
With a gas-fet CF300, and switchable gain between 14 and 24 dBD, noise figure better than 0.9dB, continuity damping better than 0.2 dB, transmittable power 750 W PEP to 2 meters with these prinelais
2 m 70 cm dual band antenna, horizontally polarized antenna, with aluminum rod for the radiant element and also copper tube
I have an old VHF transceiver a little-bit "deaf"! By adding the following VHF pre-amp as 1st stage, the improving of sensitivity is spectacular
After the dipoles and coaxial cables placement into the mast, its time for the final tuning
Collinear antenna project, wich gives a gain of about 5,1 DBi with 2 dipoles and 8,1 DBi with 4 dipoles Omni directional
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