The CCrane version is a "full gallon" as far as the FCC is concerned.
I have one which covers my house, and 3 acre yard, with full quieting.
It is on the ground floor of a frame house, and sits on top of a metal
filing cabinet, and works equally well on top of the tuner/amp. I
have found that, as you would expect, the signal improves modestly as
you move to higher TX frequencies.


--
Alan
WA4SCA