Sectional Questions
I am brushing up on sectional information and ran across a few questions that I couldn't find the answer to in the AIM. Thanks everyone.
VFR Advisory Service Frequency:
The legend of the sectional has an airport comment "VFR Advsy" with a frequency next to it. The description is:
"VFR Advisory Service shown where full-time ATIS not available and frequency is other than primary CT frequency".
Can someone explain how this is used and for what? I am not sure what information is supposed to be disseminated. Also, is it automated?
Unicom at controlled airport:
I know Unicom frequencies are used for wind and runway information, but why are these frequencies listed on the sectional for airports with full-time control towers?