R7000.5

         ADD A COOLING FAN TO YOUR ICOM R-7000 RECEIVER

                    by Brian Kantor, WB6CYT1

     In my R-7000, adding a  fan  makes  a  big  difference.
     I've  had  it  on  continuously for three days now, and
     it's still nice and cool.  Turns out most of  the  heat
     comes  from the transformer core in the AC supply.  One
     of those 3-1/2" 12V DC fans fits just nicely -  a  pair
     of 1/4" standoffs screwed through two of the upper back
     panel ventilation slots holds it in  place,  the  power
     leads  snake  through  the lower ventilation slots, and
     some duct tape to form a gasket, and it pulls  the  hot
     air  right out.  If you pick the 12V off the power sup-
     ply regulator board at W3 (orange lead), it  will  even
     work properly when you run the radio off 12 volts.

     [In order to blow hot air out, the  fan  must  suck  in
     cool  air  from  somewhere.  Users are advised to be on
     guard for dust being drawn into fan-equipped R-7000s. -
     Editor]