Hi Reg

Thanks for the post!

I just wanted to add something that has never made sense to me.

I had a section of ladder line that I affixed to the roof joists under
the eaves using thumb tacks. Three of these thumb tacks kept coming
out on me, the rest held just fine. It was always the same three.
The last time I used three push-pins with plastic heads and found the
heads missing from the push-pins shortly thereafter.
It wasn't until I discovered the puddles of plastic on the ground that
I realized that they had melted. Yet the ladder line itself seemed
unharmed.
So I picked up a small box of nylon screws at the hobby shop and
replaced all of the thumb tack and the three push-pins with these
nylon screws.
After doing same, I had to make adjustments to my tuner on a few
bands.

After that I never had a problem again!

I never noticed a change in transmission or reception before or after.
But feel the RF is what caused these thumbtacks to keep coming out,
probably burning the hole in the rafter larger and larger each time
and that could be what melted the heads of the push-pins off.

The three thumbtacks that kept coming out were equal distance from
each other, about 64 inches apart. There was a thumbtack every 16
inches along the part of the ladder line that ran under the eaves.

TTUL
Gary