I have just build the full kit. The transceiver is working perfectly! I am still waiting for the enclosure from China. And I ordered the final fets by Funkamateur. I now have two IRF510 as final fets temporarily. I setup the ARM compiler tool chain under Linux and I can compile the firmware. What I like to add to the software is a CW decoder.
I think I sell my FT-817nd and use this mcHF radio for SSB/CW SOTA and portable use. I think I keep using my MTR 3B when weight is important.
It’s a very very nice radio! The spectrum/waterfall display is great! If there is one minus then it’s the receive current of about 410 mA. The linear regulators (8V and 5V) are getting very hot. On a cold summit you can warm your hands with the mcHF hi. I will experiment to replace the linear regulators with switched regulators. Hopefully this does not add too much noise. The radio it self is consuming about 2 Watt. The regulators have to dissipate more then 3 Watts. If I use switched regulators I think the receive current will be around 160 mA at 13.8V.
My perfect SOTA radio would be the mcHF with the size of the MTR 3B
73 Erwin PA7N