Increasing range of MS16A motion sensor

[al t.]

I had a problem with range with the MS16A
motion sensor, it seemed to work at 80 feet
but not at 100 feet where I needed it from
the transceiver. I didn't want to extend
the antenna in the sensor for fear of
ruining the water resistant features, so I
extended the antenna on the transceiver
instead, by clipping on a 15" jumper on the
end of the antenna. Now the signal is good
and strong. I'm sure the wave length is not
correct but it works and its easy to do.

[thedanc]

That is a known workaround.  Sounds like you
have that tacky little cm17a tranceiver with
the dangling wire antenna.  It sucks out of
the box, but by adding a decent telescoping
antenna makes it suck less.