[Premium-Rx] HF 2050

[ToddRoberts2001 at aol.com]

In a message dated 6/3/2008 7:54:57 P.M. Eastern  Daylight Time, 
l.strong at mchsi.com writes:
Recently purchased a Collins  HF2050. Which is the best way to cool the 
power supply? Muffin pan  pulling  the air from the top or pushing the 
air from the  bottom?

Regards
Larry Strong  


-  All around best approach is to mount the power  supply separately from the 
receiver to keep the damaging heat out of the  chassis. 
    If you don't want to do that, there are several tricks  to cool things 
down. One thing that will help a lot is  use a variac to  reduce line voltage 
going into the power supply. Reduce line voltage until just  above the point 
where it drops out of regulation. This will save many watts of  heat dissipation.
    Forced-air cooling will work best pushing up cool air  from directly 
below the power supply. Best idea would be to build a cooling  cabinet with 
several large holes punched in the bottom with fans mounted in the  bottom forcing 
air up. Remove the bottom and top covers from the radio to allow  air to flow 
more freely.
 
73 Todd WD4NGG



**************Get trade secrets for amazing burgers. Watch "Cooking with 
Tyler Florence" on AOL Food.      
(http://food.aol.com/tyler-florence?video=4?&NCID=aolfod00030000000002)