Building amplifier — lost count :)
Started building my own new amplifier controller (STM32F405RGT6 backend + esp32 s3 frontend) with blackjack and hookers.
Метка: amplifiers
Amplifier case — day 3
Amplifier case — day 2
Finally got the amplifier case
Wolf RU4PN QRP Unit some tests
First transmit using new unit.
SDRs work
Antminer version almost ready. Need to cut circle for amplifier fan, do some cosmetics, screw on MOSFET board for LPF, screw on
1.5KW HF load SWR
Testing MRFE6VP61K25H
Photos and video (RU)
Big HF load
It’s based on a copper plate, big old whipped aluminium radiator and two 100Ohm resistors, 800watt each.
Some interesting packages
Longer telescopic part for vertical antenna — better SWR on 40m and 20m without a coil: Copper plate for 1.5kW load: Resistors