The amount of power put through an aerial (and coax) makes
transmitting incomparable with receiving.
The nature of receiving means that you can receive with a poorly-tuned
antenna or, often, with just a bit of wire.
VHF signals are normally bound by the horizon - if you were able to
hear VHF channels at 100's of miles distance then that's caused by
unusual atmospheric conditions (e.g. ducting) and I wouldn't draw any
conclusions from it.
The best thing to do is find a local ham or amateur radio club and ask
them to help you test your feed line with their SWR meter.
On Mon, Feb 19, 2018 at 10:59 PM, firstname.lastname@example.org
[amelyachtowners] <email@example.com> wrote: