[hpsdr] Cooling Requirements?

[Tony Langdon]

At 06:40 AM 3/16/2007, kd5byb at bellsouth.net wrote:

>When I get back in town (on road right now, wife in hospital about 
>two hours from home) I'll do a quick analysis with a 120 watt heat 
>load and assuming about 20 CFM airflow in a 70 degree room.

I'd like to see the analysis repeated at 95F, because that is quite 
representative of the sustained afternoon temperatures regularly 
observed in both shacks I have (that time of year, night time 
temperatures usually hover around 80F inside).  I tend to like erring 
on the side of too much cooling.  That keeps my repeater running in 
the above conditions.  Those hams here who have totally separate 
shacks may see even higher temperatures as well as much more 
temperature cycling, as the normal diurnal range here is quite large in summer.

73 de VK3JED
http://vkradio.com


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