I have a R390 for sale. Unit works fine..
Has Both meters.
Cosmetically good.
only thing is that it has a r390a data tag on it.
selling to replace in rack unit with a matching 390a. see pic on website
link below
the r390 is the lighter gray unit.

http://mysite.verizon.net/vzeeiuy2/id15.html

$500
I will not ship.
Located in NJ
I plan on being at the Warminster show in PA on the 1st of May.
Doug N2PLR