Hits 

HF/6M Antenna Tuner Preselector


HF/6M Antenna Tuner Preselector

Frequency range: 2Mc...52Mc 180m band depending on the mismatch of the antenna used and-or maximum inductance. Experimenting with the coils can be desirable

post 12 Oct 2024


Antenna Transmatch tuner Links

193



Un adattatore di antenna portatile
Con il classico schema a pi-greco si può costruire un semplice adattatore di antenna che permette di usare filari di lunghezza casuale in tutte le bande, e anche in 80 e 160

Un moderno accoppiatore variabile per bobine
Un sistema pratico, economico e funzionale per realizzare un accoppiatore variabile per bobine, gia' usato nella Radio a reazione presente nel sito, consiste nell’utilizzare un tubetto vuoto di colla per ufficio

Z match qrp covers 10 thru 80 meters
I ordered the variable capacitors from Emtech, they are the type used in the Emtech ZM-2 tuner

Z-Match Tuner for QRP
My favourite antenna tuner is the single coil Z-Match 100 watt

Z-match 8 bandes
It allows a continuous tuning, without switching but using the two CVs, a Lévy or Zeppelin antenna from 3.5 to 30 MHz


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