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Antenna tuner QRP for antenne levy
It covers from 10 to 28 MHz but for emission powers not exceeding 10 W because the CVs used are BCL recovery at broadcasting receiver transistors
post 05 Dec 2024
Antenna Transmatch tuner Links →
T-match atu
500pf variable capacitors and a e roller inductor the variable capacitors with 3mm plate spacings are well capable of withstanding voltages of several kilo volts
Two versions of the SPC antenna tuner
The nominal values from the article are: C1, 200 pF; C2, 200 pF per section; L1, 28 microhenries, roller inductor
Using Auto-Tuners
When using an autotuner you donÂ’t necessarily have to use a resonant length of wire. In fact if you wish to use one for multiband operation it may be best to pick a length of wire which isnÂ’t resonant on any of the required frequencies
Z Match A Drop-Out Region
The Z match tuner can be resolved as a simple L network of series capacity and shunt inductance combined with an output coupling circuit
186
500pf variable capacitors and a e roller inductor the variable capacitors with 3mm plate spacings are well capable of withstanding voltages of several kilo volts
The nominal values from the article are: C1, 200 pF; C2, 200 pF per section; L1, 28 microhenries, roller inductor
When using an autotuner you donÂ’t necessarily have to use a resonant length of wire. In fact if you wish to use one for multiband operation it may be best to pick a length of wire which isnÂ’t resonant on any of the required frequencies
The Z match tuner can be resolved as a simple L network of series capacity and shunt inductance combined with an output coupling circuit
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