It would probably be okay, but it's mainly for folks who don't have a backstay or a large deck
to string a wire, e.g., cars and trucks It's kinda tough to step a mast
and still pass under the overpasses on the highway.
Not sure how it compares, but I see a lot of hams using a High Sierra Pro 1800 for mobiles. Google
it if you're interested and read about how other rate them, but remember, none of these guys have backstays
or a large deck
to string a wire.
The random wire I strung on my deck (my mast
is down right now) works just as good, and probably a lot better -- as well as a whole lot cheaper. I've been checking into the MMSN daily at about S3 - S5 out to about 900 miles. I'm sure my backstay will be a bit better, but probably not much since I only put out 150 watts.
Btw, have you tried to connect it to your uninsulated backstay? That's the simplest solution. I'd only look into other options if the uninsulated backstay wasn't satisfactory.
I'm currently on City Island in the Bronx, so let me know if you'd like a signal check. I'm sure there are others here who'd be happy to help out as well, assuming I'm either too close or too far away.
good luck and 73...