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Automatic Antenna Switch


Automatic Antenna Switch

As I am so lucky as to have a tuned antenna for each amateur band between 80M and 6M I thought that an automatic antenna switch would be very convenient

post 14 Sep 2024


Projects_Homebrew Links

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Alimentatore Switching regolabile da 5.1 a 15 Volt con 4 Ampere
Il circuito integrato L296 è alloggiato in un housing plastico di tipo MULTIWATT a 15 pin

A Portable Low Frequency Antenna Analyzer
For those of us who like to play with antennas on the ham bands, one of the handiest tools to have around the shack is an "antenna analyzer

Alimentatore LowCost Switching 13V 15A
Costruito recuperando i pezzi da alimentatori da PC tipo ATX di circa 350 - 400W

Amateur Radio Pages Projects


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

30 Volt Computer Power Supply Stack

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