i have gone 50 feet with vpm2000 and canare bnc no issues that would be remote antenna.
i typially leave the rm433 in the rack(if local) and remote locate the antenna. this seems to work the best for me.
Ed will be known as the Tiger Woods of the integration business, followed closely with the renaming of his company to "Hotties A/V". The tag line will be "We like big racks and tight holes"...