Or perhaps the author will update his article,
which was outdated at the date of publication :-)
Phil W7OX
On 3/12/15 9:23 AM, Hank P wrote:
I read that article and was hoping Wayne or one
of the guru guys would comment . It is probably
picking specs out of the pepper , but it seems
to me that testing a K3 around 5300 khz means
there is essentially no benefit from the ham
band bandpass filters the K3 uses - Would like
to see those numbers compared for instance with
the 3880khz or whatever freq it was with a
filter in a ham band. (I am NOT talking about
roofing filters)
Hank K7HP
-----Original Message----- From: Chip Stratton
Sent: Thursday, March 12, 2015 7:53 AM
To: Elecraft Reflector
Subject: [Elecraft] Noise Power Ratio and the K3
with new synthesizer?
Adam Farson VA7OJ has an article in the current
March/April 2015 QEX
discussing the use of Noise Power Ratio (NPR) to
help define a
receiver's performance in a crowded band in a
way that might be more
illuminating than the simpler two tone tests.
Its an interesting
discussion which makes some sense, but then I'm
not anywhere close to
an expert in that field.
In any event, he has figures from a number of
transceivers, including
a couple of K3s which no doubt do not have the
new synthesizer. The
K3s still performed very well relative the the
rest of the field in
these tests, though they were slightly behind
the IC-7700, IC-7800,
and TS-590S.
Which of course makes me wonder how the K3 with
new synthesizer would
perform in this arena?
From a guy with a mild metrology addiction...
Chip
AE5KA
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