Started assembling QRP RF unit by RU4PN
AMP is on RD15HFF MOSFETs, has a tuner and place for SAW VHF filter:
Метка: hf
Testing MRFE6VP61K25H
Photos and video (RU)
New hobbyplace
After small relocation:
Big HF load
It’s based on a copper plate, big old whipped aluminium radiator and two 100Ohm resistors, 800watt each.
Qmtech ADC update video (RU)
MLA-30 video + final video about Qmtech board (RU)
QMTech board links and new videos
Links to the projects + some videos.
Some boards received
New JLCPCB order received.
ADC board for Qmtech
After testing it I will share it on EasyEDA website.
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