BCD536HP Not scanning until Dept button pressed

I know i must be doing something wrong, but I don't know what.



I have programmed a P25 system using Sentinel, and uploaded it to the scanner. When I power on it appears to be scanning, but there is no signal strength indicated, and it never picks up anything.



If I press the Dept button twice the signal strength then shows up and it scans fine, until powered off.





WTH am I missing?





Thanks/