Hugh, We can see it in here. http://www.g8wrb.org/data/Eimac/3CX1500A7.pdf 73 Sugi JI3KDH On Thu, 05 Apr 2007 08:51:00 -0400 Hugh Duff <hduff at cogeco.ca> wrote: > So I'm curious to know what the optimum CFM requirement is to > sufficiently cool a single 3CX1500a7.