ralph162,
If the Heading of the SC33 is off by more than 5 degrees or higher, you can adjust the unit's Antenna Orientation with a TZTL12F/TZTL15F/TZT2BB that has V.6.0.1 or higher software.
Or you can connect via a PC using the SC Set-up Tool.
Please refer to the SC33' Operators Manual, Chapter Three on Adjustments.
- Deep Blue :capt