Sorry,

I made a most ennoying typo :

I wrote :

snip.....
"  Does sea again ( if any at all ? ) and low man made and evironment  noise
add
substantially to the LF performance ? "
snip.....


While I meant to write :

" Does seagain ( if any at all ? )  and etc... add substantially to LF
performance  ? "

I do know something on sea gain on 144 Mhz ( for /MM EME purpose on moonrise
and moonset ) but I am unaware of the seagain effects on LF.