You're hitting a current node out at the ends of the wire. You could add
some wire to the 80M elements, but if the antenna is working properly, your
better option would be to find better end insulators. Ceramic dog-bone
insulators are only a couple of bucks apiece...

73,
Mike KI6PR
El Rancho R.F., CA

"Andy" wrote
I've got a multi-band inverted V trap dipole antenna which as my first HF
antenna seems to working fine, I like the fact that can get away without a
tuner on most bands.



However I've just started getting into 80meters and the tip of the dipole
keeps melting the guy rope isolator hence the dipole leg falls to the
ground, only running 200watts, the antenna is rated for 1kw.



Everyone suggested its high SWR but not according to 3 different SWR
meters
(1.1:5) I always use a tuner built into the amp to give the perfect VSWR
but
after 10 seconds the melting starts and the VSWR starts to increase..



Any ideas?