High swr when connect earphones and key

[it9xjj]

Help, Hi, here It9xjj, trusdx low band, on Mobile with loaded vertical antenna when i insert cable of earphone the swr from 1:1.5 goto 2.5 also when i insert cable of key, thank's for solution, john

[Chip]

Maybe it is acting like a counter poise?

[LILO]

Check your antenna.