I have the little brother to this guy on my roof. Works well. I use about 35' of RG-8 to feed mine.
DIAMOND X50A DUALBAND BASE/REPEATER ANTENNA - $60 (Denver)
I have a DIAMOND X50A DUAL BAND BASE/REPEATER Antenna in excellent condition for sale. It has been in my attic for the last 15 years and shows no weathering.
It comes with all mounting hardware and has low SWR on both VHF and UHF ham bands. It can be used as a base or repeater antenna on VHF, UHF or both bands simultaneously.
It sells for $99.95 and I am asking $60 as I no longer have any radio equipment that would use it.
Here is an advertisement with detailed specs: http://www.rfparts.com/diamond/x50a.html,
and here are rave reviews by users: http://www.eham.net/reviews/detail/4998
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"Our task must be to free ourselves from this prison by widening our circle of compassion to embrace all living creatures and the whole of nature in its beauty. Nobody is able to achieve this completely, but the striving for such achievement is in itself a part of the liberation and a foundation for inner security. " --Albert Einstein