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A Homebrew antenna impedance bridge
The traditional way of doing this measurement is to couple the dipmeter coil to the antenna or coaxial stub through a 1-3 winding link coil as shown below
post 22 Feb 2024
Projects_Homebrew Links →
30 Volt Computer Power Supply Stack
A bonus was that I discovered that these did not need a standby load connected to the supply to keep them running - just apply mains power and close the Start lead to ground
Amateur Radio Projects Vector Network Analyzere
This is a homebrew VNA capable of both transmission and reflection measurements from 0.05 to 60 MHz, with about 0.035 Hz frequency resolution and over 110 dB of dynamic range
A Portable Station for 30 MetresI decided on the 30 metre kit, because 30m has less static in the summer months than 40m
Antan un analyseur d'antennes compact
The best analysis of an antenna, for a correct adjustment, is done at its feed point, without passing through the cable or the power line
Frequency counter up to 12 GHz
Lab bench device that counts signals from below 500mhz to above 12 ghz
170
A bonus was that I discovered that these did not need a standby load connected to the supply to keep them running - just apply mains power and close the Start lead to ground
This is a homebrew VNA capable of both transmission and reflection measurements from 0.05 to 60 MHz, with about 0.035 Hz frequency resolution and over 110 dB of dynamic range
The best analysis of an antenna, for a correct adjustment, is done at its feed point, without passing through the cable or the power line
Lab bench device that counts signals from below 500mhz to above 12 ghz
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