Метка: hf
Qmtech Zync 7z020 board
I was trying to run it with AD6645-105 and overclock it to 122.88mHz, but ADC chip was dead 🙁 Ordered new one
Playing with filters for Wolf 3.5″
Replaced inductors with non-smd: 160m: New: 80m: Old: New: 40m: Old: New: 30m: Old: New: 20m: Old: New: 18Mhz: New: 15m: Old:
Wolf 3.5″ battery
Wolf 3.5″ is finished too.
There is some tuning needed, but almost nothing to solder anymore, just 2m filters mods required. And all works.
Wolf 3.5″ first QSO
80watt VHF module is working.
There are some place for modifications and tuning, but… assembly for big wolf is finally finished… I hope I’ll never repeat it
Was struggling to understand what was overheating :)
SWR was increasing and power was lowering. Was trying to figure out whats wrong… Finally…
Wolf 7″ amplifier in the thermal camera
No active cooling. Also there are no feedback circuits on both stages and untuned bias on the second.
Just photo of mrfx1k80h amp. parts
For qrz.com