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A Mini Tuner for HF
Will match from 80 - 10 metres, unbalanced, modified incorporating a balun
post 09 Jun 2024
Antenna Transmatch tuner Links →
The Z Match and Its Matching
The article identifies an inherent drop-out region in the Z Match load range for certain capacitive
Tuner in LC circuit
The tuner is connected to the transceiver via a coaxial cable and a SWR meter. Antenna and earth are connected directly to the tuner
Transmach 1,8 a 30 MHz eñado para las bandas de radio-aficionados
The transmach, is designed for radio-amateur bands, it is recommended, although it does not appear in the circuit, to place a 2.5 mH radio frequency shock at the output
Tuner 1,8-50
Variable capacitors and switch from R-104 BSN block. In the absence of these capacitors, it is possible to use 2 sections, from the transmission radios
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The article identifies an inherent drop-out region in the Z Match load range for certain capacitive
The tuner is connected to the transceiver via a coaxial cable and a SWR meter. Antenna and earth are connected directly to the tuner
The transmach, is designed for radio-amateur bands, it is recommended, although it does not appear in the circuit, to place a 2.5 mH radio frequency shock at the output
Variable capacitors and switch from R-104 BSN block. In the absence of these capacitors, it is possible to use 2 sections, from the transmission radios
23cm Yagi Antenna building Finished antenna at 1275 MHz SWR under 1:1.5 at resonant frequency
50 MHz preamp Gain 26dB with the BFG135 Preamps for 144 and 430 MHz, for 50 MHz, the BFG135a is a cheap transistor and in my view rather strong. It is not easily damaged by static discharge or RF power. FG connection
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