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A simple 10w qrp z-match 80-10m
Easily connect both symmetrical and unbalanced antennas from 80 to 10 m
post 20 Jun 2024
Antenna Transmatch tuner Links →
Balanced ATU
A balanced ATU, An ATU has the advantage of bringing the feeder-antenna system to resonance, act as a band pass filter both on receive and transmit and a low SWR
Coupleur pour antenne Levy
As a multi-band antenna, the Levy antenna is undoubtedly the best and cheapest antennas, but its agreement requires a suitable coupler, which sometimes represents a brake to the installation
De ultieme Z-match voor HF
The reference hardware design ad prototype I built is using an Arduino Uno and has 100 watt capability
Esperimenti com l'accordatore A T
Accordatori a T e non i classici LC che differenze ci sono ?,la configurazione a T fa si che in entrata e all' uscita dell'accordatore vede anche qualche migliaio di ohm di impedenza
Een Z-match
Measuring the HF voltage is done with a simple diode detector
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A balanced ATU, An ATU has the advantage of bringing the feeder-antenna system to resonance, act as a band pass filter both on receive and transmit and a low SWR
As a multi-band antenna, the Levy antenna is undoubtedly the best and cheapest antennas, but its agreement requires a suitable coupler, which sometimes represents a brake to the installation
The reference hardware design ad prototype I built is using an Arduino Uno and has 100 watt capability
Accordatori a T e non i classici LC che differenze ci sono ?,la configurazione a T fa si che in entrata e all' uscita dell'accordatore vede anche qualche migliaio di ohm di impedenza
Measuring the HF voltage is done with a simple diode detector
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