So considering the potential effects of asymmetry in the build of
the filter(s) it doesn't surprise that reversing the filter might
make a difference, *if* filter IMD is the dominate factor.
Reversing the filter in the mounting does not effect bandpass symmetry.
However, if the filter
The FT5000 is a mighty fine transceiver!
73
Arie PA3A
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If you're running in a cw contest, any radio that has worse key clicks than
your radio and is a potential close neighbor, is not mighty fine.
Barry N1EU
Arie Kleingeld PA3A-2 wrote:
The FT5000 is a mighty fine transceiver!
--
View this message in context:
The FT5000 will improve in the coming half year. I'm sure of it. Yeasu
might modify some things (software updates), or others will.
It is just that every time a good transceiver hits the market, everybody
seems to jump on the subject to prove that it is not a good transceiver.
At least, not as
: [Elecraft] New Sherwood report
The FT5000 is a mighty fine transceiver!
73
Arie PA3A
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WOW, I have not see this much fur flying in a long time.
It was simply a matter of time before a radio showed better numbers than the
K3,
it had to happen. Now that it has, good for Yeasu. But it does not mean my
two
K3's do not work anymore or I am not able to use them, Heck No. The fact
On the Ten Tec Eagle list, Rob Sherwood just posted a very interesting
response to the 2 kHz DR rankings being discussed here. Apparently, there's
a measurable amount of IMD difference not only between roofing filter
production samples, but the manner in which they're inserted. For example,
I haven't (yet) seen Rob's comments, cited by Paul. The designers across the
pond are well-aware of the IMD effects in crystal filters, for example here:
http://www.xs4all.nl/~martein/pa3ake/hmode/roofer_intro.html
I have searched for, but have not found, remarks that I recall being made by
An unfortunate choice of terms on my part has caused some confusion.
While my particular filter's passband is asymmetrical, something mentioned in
passing, the asymmetry I was really referring to is a difference between
something on one end of the filter from the other. It could be either a
Wayne said it very succinctly. However, most folks seem to overlook the
fact that the K3 is a modestly priced radio (comparatively), and it is
bucking some very high dollar radios. Look folks, you can spend a lot more
money, and maybe, just maybe, you can get something special out of those
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