> .... repeater owners in the New York City metro found that they > had fewer issues with desense and overload if they flipped to a > negative offset (i.e. get the ham repeater Rx further away from > the 450-455 commercial repeater Tx's).
... which is not really a valid reason. Probably a combination of
the available receivers of the day and lack of resources (cavities
and duplexers)... not to mention a bit of being lazy ("taking the
easy way out")
s.

