ETS-Lindgren 7-TR Tripod Positioner - Manual (Page 31)

www.ets-lindgren.com Mounting a Model 3106 Series Antenna 31
Retain these two screws for future use; if you remove the
Model 3106B from the 7-TR, you will need to replace these screws to
provide support for the inner ridge of the antenna.
5. On the side of the
Model 3106B with the
antenna connector,
remove the two
screws from the mount
plate.