Cabud,
If you want to extend the phone line, you can do so up to 25 ft. You must be sure the line is straight thru by looking at the end of the connector with the tab up. The colors should not change order, or cross over. Also you will need a coupler to join the two lines together. Ambient weather sells a kit, I bought my stuff at Home Depot.
I had to use some U bolts from my Oregon Scientific WMR100 to secure the thermometer and rain gauge to a different larger mast instead of what the station came with. I still use the station mast for my wind sensors with a hose clamp to secure it to a larger mast.
Moving the thermometer by extending the cable allows for the rain bucket to be where you want it near ground level.
Skywatch,
Thanks for the calibrations. I already calibrated mine, though not nearly as much as you had to.
Mine are Wind .24, Temp, -0.5, Humidity, 5, Air press. -00.03 Rain .24 - Light and UV none.