What was updated Dave?
Just above the CM15A picture...
One user's range tests using an SH624 remote gave over 200' with a 1/2 wavelength (18") wire on the remote and a standard CM15A. He got 120' with a standard Sh624 and an 18" wire added to the CM15A.
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How much improvement could one expect - 1/2 wave vs the eggbeater?
I've never tested the maximum range of the eggbeater. In the only test I did, it was good at 300' but I did not go further. Also, I never tested with the eggbeater and a CM15A although I did test using the same type of RF receiver.
I've never been a fan of the CM15A. While the hardware was first-rate, X10's software was, IMHO, abominable.