We're replacing our junk 153 boards with the following:

RB532 w/502 daughterboard
pacwireless 48v POE
(already have): SR9 cards
two CM9's or R52's

We run in temps from -10 to +90 outdoors

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So here's the question:
SR9 and 2 R52's
or
SR9 and 2 CM9's

what say ye?