Building amplifier — lost count :)
Started building my own new amplifier controller (STM32F405RGT6 backend + esp32 s3 frontend) with blackjack and hookers.
Started building my own new amplifier controller (STM32F405RGT6 backend + esp32 s3 frontend) with blackjack and hookers.
First transmit using new unit.
Antminer version almost ready. Need to cut circle for amplifier fan, do some cosmetics, screw on MOSFET board for LPF, screw on
Photos and video (RU)
It’s based on a copper plate, big old whipped aluminium radiator and two 100Ohm resistors, 800watt each.
Longer telescopic part for vertical antenna — better SWR on 40m and 20m without a coil: Copper plate for 1.5kW load: Resistors