[Elecraft] [KX3] A Comparative Performance Assessment (of Aftermarket KX3 Heatsinks)

[Peter Pauly]

The Canadian heatsink looked fine, but for me, the deciding factor was
price - with shipping the Canadian product was much more than the PAE one.


On Tue, Sep 2, 2014 at 3:23 PM, Gary W. Hvizdak <gary.hvizdak at cfl.rr.com>
wrote:

> Don (W3FPR) recently wrote ...
>
> "why does still air have to be in quotes?"
>
> Hi Don,
>
>     That was done so the wording "in still air" wouldn't seem like a
> grammatical error.  More importantly, here's an excerpt from a recent email
> from Adrian, addressing your inquiry regarding ambient temperature:
>
> "The ambient temperature was constantly monitored on the test bench by the
> transceiver using a very sensitive aviation anemometer.  This instrument
> can
> measure airflow down to fractions of a knot, and does so by monitoring
> temperature changes of a heated thermistor, as well as using a ducted fan
> whose speed is measured via a pulse-counting technique for higher speeds.
> I
> managed to keep the ambient temperature stable throughout the test to
> within
> an indicated 0.5 degree C, so I was quite pleased with the actual test
> results."
>
> --- - - - ---
>
>     I certainly could have included details like this in the final report,
> but tried to avoid providing too much information, and also tried to limit
> the document to two pages without resorting to a tiny font.  More
> importantly, IMHO Adrian's test environment and methodology were sufficient
> for his intended objective, which was to compare the performance of the
> various aftermarket offerings to one another, for the purpose of ranking
> them.  Yes, higher resolution temperature measurements would have made the
> results more meaningful; but that evaluation is left as an exercise for the
> reader.
>
>     BTW, check out http://www.ve7fmn.ca/faqs/#about_testing for a
> description and photo of the setup Adrian had used for his original
> comparison of the factory/stock heatsink and his Cooler KX(TM) Lite, which
> used an entirely different methodology.
>
> 73,
> Gary  KI4GGX
> webmaster http://www.ve7fmn.ca/
>
>
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