Any way to add an antenna to help CM15a with remotes?

[vtol]

I know this sounds dumb, but here goes..
Any way to add an antenna or is there an extra antenna module for the CM15a to help remotes find the CM15a better?

I have a long house and it would be nice to have a CM15a antenna at each end.
I guess its really dumb to ask if you can have 2 CM15a at the same time in the same house.

Thanks

[HA Dave]

Any way to add an antenna or is there an extra antenna module for the CM15a to help remotes find the CM15a better?
I have a long house and it would be nice to have a CM15a antenna at each end.

That would be this: http://www.x10community.com/forums/index.php?topic=12292.msg69057#msg69057

[Brian H]

There are other antenna mods if the one Dave pointed out is not suitable for you.
Others have more than one CM15A in use. I believe they may have used different Tranceived House Codes to avoid problems.