[Tech-Assist] STL problem now critical

[Tom Taggart]

Doesn't cure the problem, but (as they say with the common
cold) eases the symptoms...

See if you can find a preamp for the receiver.  We've used
the ones made by Hamtronics (have one on a 25 mile path
now), but I see they no longer make one for anything up that
high. (You might call them anyway, maybe they still have the
circuit boards & can make one for you).