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Automatic Tuner-Transceiver Interface
This Autoamtic Tuner-Transceiver Interface (ATTI), based on my own firmware and a PIC16F876 processor, is used to control a connected transceiver when the Tune
post 29 Mar 2024
Antenna Transmatch tuner Links →
Z-match tuner for ft817
I chose to use the dual balanced output link configuration suggested by Mr. Lofgren. One link is a low impedance, the other a high impedance
Z-Match Antenna Tuner 100 watt
The variable capacitors mustbe insulated fromground, thereforemount both capacitorson a piece ofsingle-sided circuit-or perf-board that is cutjust wide enough to fit into thealuminum case
Z-match ATU covering 160m - 10m
I put up a homebrew 40m coaxial dipole which wouldn’t even give me a good SWR on 40m! I looked around for an appropriate ATU circuit to build
End Fed Half Wave Tuner Kit
The two transformers that need to be wound, one on toroid and the other on a binocular core, were pretty easy, and anyone who has wound inductors before will have no problem
Z-Match, un circuito da riscoprire
L'originalita' dell'idea consiste nell'usare due circuiti accordati, in parallelo, che lavorano su frequenze diverse, eliminando la necessita' di induttanze tipo roller o con prese commutabili
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I chose to use the dual balanced output link configuration suggested by Mr. Lofgren. One link is a low impedance, the other a high impedance
The variable capacitors mustbe insulated fromground, thereforemount both capacitorson a piece ofsingle-sided circuit-or perf-board that is cutjust wide enough to fit into thealuminum case
I put up a homebrew 40m coaxial dipole which wouldn’t even give me a good SWR on 40m! I looked around for an appropriate ATU circuit to build
The two transformers that need to be wound, one on toroid and the other on a binocular core, were pretty easy, and anyone who has wound inductors before will have no problem
L'originalita' dell'idea consiste nell'usare due circuiti accordati, in parallelo, che lavorano su frequenze diverse, eliminando la necessita' di induttanze tipo roller o con prese commutabili
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