Coaxial dipoles on 2m - 70cm

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Coaxial dipoles on 2m - 70cm

Coaxial dipoles on 2m - 70cm

This antenna is very easy to make from a piece of 50 ohm or 75 ohm coaxial cable

post 09 Aug 2024

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Meter Sleeve Dipole Antenna
This is an off-center-fed sleeve dipole, made of 1/2 CPVC and aluminum foil tape

Bazooka Antenna Calculator

Double bazooka calculatorThe calculation of the popular double bazooka antenna is easier than you can imagine

Doubla bazooka coaxil dipole antenna
A typical, dipole antenna has bandwidth of about 50 to 100 KHz

Antenna splitter per VHF-UHF per quattro ricevitori

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

Kits and Components

Amateur radio kits by Kanga US

50MHz to 28MHz RX Converter

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

13 CM transverter Here it is shown connected to a 120w amplifier, which is sitting on top of it.This transverter can deliver about 25w on it's own, and runs on 12v, making it suitable for portable service. When at home with 28v available, I use it with the 120w amp.It's a hybrid, and consists of a basic DEMI transverter board kit, a driver board out of a Spectrian amplifier, and my own T/R control board

40m Moxon Antenna The input impedance of our antenna is 50 ohms, balun 1: 1. with coaxial RG213 of 15 cm in diameter and 5-6 turns from the winding

Rf Directional Power Meter A wide dynamic range power meter using a directional coupler, AD8307 Log Amplifier and arduino microcontroller

40Meter delta loop Recalculated and adjusted each side to 13,59 meter. Made a new run with the miniVNA. The Loop works fine on 40/20 Meter band, and is usable but not optimal on 15Meter

Analizzatore di antenne con DDS AD9851 Si tratta di un analizzatore vettoriale di reti Vector Network Analyzer basato su un generatore DDS AD9851, un RF gain and phase detector AD8302 e due ADC a 10 bit TLC1549

Boom microphone

Boom microphone Using pc boom headsets with amateur transceivers yaesu ft-857 ft-897 icom ic-7000

40m 2el Yagi linear load

40m 2el Yagi linear load This 40m yagi, which shows very high performance on our tests, isn't ispired from any other model. Lots of yagi models are analyzed and this model figured out. The most spesific part of this model is having belove 1:5 SWR value and 175 khz bandwith

Bazooka Antenna Calculator

Bazooka Antenna Calculator Programma caculator for bazooka antenna,with measurements already calculated for frequeze used by radio amateurs