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Antenna tuner longwire de 7 a 30 MHz
It is a simple L coupler that can be of great service for fixed or mobile traffic. It allows to perfectly adapt a wire of 20 meters from 7 to 30 MHz
post 05 Dec 2024
Antenna Transmatch tuner Links →
Tuners in T for antenne filaire
This is a high-pass T-filter consisting of a variable inductance inductor and two CVs. Each of these 2x125pF CVs has a capacity of 250 pF
Tunner per Antenna tipo canna da pesca
Modifica fatta ad un accordatore ZetaGi M 27 surplus
What tuners do
The primary function of a tuner is to present the radio with its specified load impedance
QRP Z-Match
The two variable capacitors are very compact. A simple SRW bridge allows to indicate the best tuning positions and an additional 150 pF capacity can be switched on, to help tuning shorter wires if necessary
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This is a high-pass T-filter consisting of a variable inductance inductor and two CVs. Each of these 2x125pF CVs has a capacity of 250 pF
Modifica fatta ad un accordatore ZetaGi M 27 surplus
The primary function of a tuner is to present the radio with its specified load impedance
The two variable capacitors are very compact. A simple SRW bridge allows to indicate the best tuning positions and an additional 150 pF capacity can be switched on, to help tuning shorter wires if necessary
PIC-Keyer This project describes the construction of a real "QRP" keyer with a small microcontroller PIC 16F84, with slightly modified hardware also PIC16F62