I have a DreamCatcher board running Skylark v4.4 with the on-board LNA and SAW filter and the passive air-gap antenna.
After powering up, the white LED comes on, the keep alive LED blinks twice, waits, blinks twice, etc. Things seem to come alive. Just when the Wi-Fi circuit comes alive, it blinks twice and then everything shuts down. I'm using a 32GB high-speed SD card. I flashed several different ones -- same problem.
Root cause: I was using a 1A cellphone charger. There's not enough current for all the circuits to run.
Solution: Works fine with a 2.1A charger.