On Wed, 7 Apr 2010 08:28:27 -0700 (PDT), steveeh131047
wrote:

Any chance the 2:1 error is related to the incorrect measurement
procedure described in some versions of user manual:

http://lists.contesting.com/_topband.../msg00017.html

73,
Steve G3TXQ

I finally got it to work properly. The trick is getting Xs=0 at a
second frequency -- I couldn't get it on the same band as the first
frequency but had to go to a second band, either up or down, and once
the second frequency was found with Xs=0, it came up with the correct
distance to fault, 53.2 feet.

Bob
k5qwg