Метка: amplifiers
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
Dn-radio kit rd16 amp. IMD3
Not the best, around 20dbc — 26db PEP average, needs some work 🙂