[Icom] A question of cooling.

[Ken]

Hi Mike. It's "possible" ICOM made the covers without holes to keep the
regulator hash noise in, you might try running the radio with the
regulator covers off as a test to see if any noise gets into the receiver.
If you get noise "I" would try one large hole with a piece of metal window
screen wire mesh over the hole. BTW, as a NRA lifer I agree 100% on your
various memberships, 73's Ken 

--- "Michael P. Olbrisch" <kd9kc@elp.rr.com> wrote:
> Good morning,
> 
> 	I just got done pulling annual maintenance on my IC-781.
> Replaced the battery, brushed out the dust, stuff like that.
> 
> 	Now the questions.  Time for the experienced experts to
> weigh in on another idea.
> 
> 	Several individuals on this list have mentioned that the
> IC-781 runs hot.  Of course, mine is no exception.  I have removed
> the speaker and speaker cover long ago to allow better air flow 
> as some have mentioned.  I also have a small muffin fan gently 
> blowing on the regulator area of the back.  This helps, but it is 
> still warm to the touch.  I have considered regulating the AC power 
> to 100 volts, but have not done that yet.
> 
> 	In cleaning the radio, I did remove the covers to the 
> regulator and final areas to remove dust.  I noticed that while
> the final area is vented, the regulator area is not.
> 
> 	At work I have the equipment to punch holes in metal.
> Nice heat holes, from 1/16th inch up to 2 inches or larger.  I 
> was wondering, anyone think it might be good for the heat
> problem to punch a few holes in the upper and lower areas of
> the regulator cover to aid in cooling it?  If so, would this have
> an adverse effect on final cooling?  I expect I would use the
> 1/4 inch punch, and 5 or 6 holes both upper and lower.
> 
> 	All comments welcome.  Thanks for taking the time to
> send your opinions.
> 
> Mike.
> 
> My E-mail address: mailto:kd9kc@elp.rr.com
> Ham Radio page: http://www.qsl.net/kd9kc/
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> 
> Member:
> National Rifle Association.
> Texas State Rifle Association.
> Fort Bliss Practical Shooting Club.
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> 
> Holder: 
> Texas Concealed Handgun License.
> 
> U.S. Army Retired.
> 
> Freedom is expensive.  Those who are not willing to
> pay the price ultimately lose everything.
> 
> ----
> Your Moderator: Dick Flanagan W6OLD, icom-owner@mailman.qth.net
> Icom FAQ: http://www.qsl.net/icom/


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