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Tunner L-Match ATU


The controls on the front panel are SWR sensitivity, rollercoaster tuning, Relay switch
post 16 Apr 2024
Tunner L-Match ATU

Antenna Transmatch tuner Links

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Automatic Tuner Project
The automatic antenna tuner described here is the first part of automating my station so I can run it remotely

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

Automatic Z-Match Antenna Tuner Project
AT-3K only has a switch position for balance line BAL to feed to an external balun

Accordatore d'antenna QRP per i 20m
Se il led si accende, significa che ci sono onde stazionarie, se il led e' spento vuol dire che esse sono molto basse

Accordatore di Antenna Tuner
La configurazione a T offre un range di impedenza piu' elevata, e permette di accordare quasi tutte le antenne


23cm Yagi Antenna building

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

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

interface-for-digital-broadcasts-with-integrated-audio

Interface-for-digital-broadcasts-with-integrated-audio 4-port HUB, with a TUSB2046. With port 1 of the HUB we drive the FT232RL; with port 2 the PCM2904, furthermore, we decided to leave ports 3 and 4 free