[Milsurplus] GRC109/R-1004A arrived!

[J. Forster]

Painting the heatsink black is essentially pointless. Unless the heatsink
operates at high temperature...  think melting solder at least... 
radiative transfer is insignificant.

-John

===============

> Interesting thoughts Richard...
>
> I have never heard any amateur say that his GRC109 failed due to
> overheating...
>
> Also note that the case is a giant heatsink and painted black which is the
> best color for
> re-radiation of heat to the outside. Now maybe if you used it for 8
> straight hours at field
> day here in FLORIDA, you could overheat it! Now there is an idea for an
> experiment and
> a magazine article.,.... NAH!
>
> On 13 Sep 2011 at 20:18, Richard Brunner wrote:
>
>> Another thing: Military communications must be infrequent and
>> brief,
>> because most mil equipment is boxed up tightly with little concern
>> about
>> heating, and the GRC-109 is no exception.  The transmitter would
>> have to
>> be taken out of the box to survive amateur operation.
>>
>> Richard, AA1P
>
>
> ______________________________________________________________
> Milsurplus mailing list
> Home: http://mailman.qth.net/mailman/listinfo/milsurplus
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Milsurplus at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>