Can wireless reliability be enhanced?

["Ken Gibson" <jayel@xxxxxxxxxxxxxxx>]

I have found wireless communication to be unreliable.  The wireless links
for my Davis Vantage Pro weather station, Radio Shack security system and
Motorola telephone and intercom are all intermittent.  They are all within
the specified range and have no metal to shield the communication.  I'm not
surprised by the Radio Shack wireless link because it is inexpensive.  I
plan to replace the Davis wireless link with a wire if possible.



Does anyone know of a method of extending wireless communication range and
reliability?  Can small antennas be used to improve reliability?



Any help will be appreciated!



Ken Gibson