Hits
End-fed halfwave and tuner for 80-160m
I planned to set up portable and lift the 123-foot wire with some helium balloons and operate in the QRP category
post 03 May 2024
Antenna Transmatch tuner Links →
Portable Z-match
A multiband compact Tuner able to tune both symetrical and coaxial
The QRP holiday-transmatch
The Transmatch is build around two variable capacitors, a toroide inductor with 32 turns of 0.3 mm wire on a Amidon T68-2 core red and a single-pole
Transmatch_a_condensatore_variabile_cilindrico
Si tratta di un "Transmatch" la cui principale caratteristica sta nel fatto che l'induttanza e le capacita' variabili necessarie al suo funzionamento, sono homemade
Trasformatore per radio frequenza
Diciamo che un accordatore e' un trasformatore per radio frequenza a rapporto di trasfomazione variabile
Variometer S match ohne Balun
I first set up an S-match with ring cores, roll coil and variable capacitor
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A multiband compact Tuner able to tune both symetrical and coaxial
The Transmatch is build around two variable capacitors, a toroide inductor with 32 turns of 0.3 mm wire on a Amidon T68-2 core red and a single-pole
Si tratta di un "Transmatch" la cui principale caratteristica sta nel fatto che l'induttanza e le capacita' variabili necessarie al suo funzionamento, sono homemade
Diciamo che un accordatore e' un trasformatore per radio frequenza a rapporto di trasfomazione variabile
I first set up an S-match with ring cores, roll coil and variable capacitor
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