Call Sign WNKA641   Radio Service GO - Other Indust/Land Transp, 806-821/851-866 MHz, Conv. An Error has occurred. Please contact Technical Support https://www.fcc.gov/wtbhelp Phone: 1-877-480-3201 TTY: 1-717-338-2824 ASL Videophone: 1-844-432-2274 Hours: Monday-Friday 8:00 a.m. to 6:00 p.m. ET (except for Federal Holidays) And report the following information. Error at Mon, Jun 3 at 05:20:54 EDT on Server wireless2.fcc.gov:kern2.fcc.gov Error Message Exception Message null