amplifiers — Страница 2

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

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

Not the best, around 20dbc — 26db PEP average, needs some work 🙂