Appalachian Trail Golden Packet rf-path-analysis GP-BOVINA to GP-GRYLCKBovina Center to Mount Greylock RF Path Analysis BOVINA-11 to GRYLCK-12 - VHF BOVINA-11 to GRYLCK-12 - UHF Packet Low Power BOVINA-11 to GRYLCK-12 - UHF Packet High Power