[Elecraft] K3 Bad Filters

G4ILO julian.g4ilo at gmail.com
Sat Jun 21 05:40:44 EDT 2008



David Cutter wrote:
> 
> I am not able to test that the filters I purchased are up to spec, but if 
> there have been significant numbers of failures (and the extraordinary 
> failure of one in a reviewer's sample), I'm coming to the conclusion that 
> filters should be returned to be re-tested, since the recent history 
> indicates a faulty test and / or manufacturing regime.
> 
> INRAD is a well-respected manufacturer, so, for Elecraft to re-test their 
> work (with all the calibration problems that engages) is a plus for our 
> confidence in the final product but a distinct fear that those filters 
> produced prior to this time are statistically more likely to have failures 
> amongst them.
> 
> Eric, is this something Elecraft could offer?
> 
> David
> G3UNA
> 
> 

If nothing is obviously wrong with the radio, I can't see the point of
returning filters to Elecraft for testing, especially all the way from the
UK (and at whose expense?) and being without a working radio for a couple of
weeks, in all likelihood to prove that nothing is wrong with them.

Normal component variations will account for slight differences in the
performance of individual radios in any case. Some of us will have a radio
that is at the low end of certain specification ranges, and others will have
one at the high end. Some may have a slightly better performing receiver but
a slightly worse performing transmitter, or vice versa. But I very much
doubt if you could tell the difference between them if they were side by
side, without the aid of a lab full of test equipment. These test results
just encourage people to obsess over differences in performance that
probably can not be discerned in actual on-air operation.

As far as I am concerned, if my K3 seems OK to me then it *is* OK.

-----
Julian, G4ILO  K3 s/n: 222 K2 s/n: 392
G4ILO's Shack: www.g4ilo.com
KComm for K2/K3: www.g4ilo.com/kcomm.html
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