The K3 is a down-conversion superhet that uses high-level signal
injection to achieve its excellent dynamic range. Short of adding many
more pounds of shielding and elaborate cable dressing, there's no way
to completely eliminate the few spurious signals that rise above the
noise floor.
These
That's very interesting. I found that I can accomplish much the same
thing on CW by simply using a very narrow bandwidth (250 Hz in my case)
... the birdies tune so fast that they drop outside the passband with
just a minor shift in VFO frequency.
I don't use SSB as often, but there the
Fantastic Wayne.
Would that be a cake mix, al-la a K3 kit or just a recipe with
ingredients, al-la, a K2?
:-)
73 de M0XDF, K3 #174
--
Black holes are where God divided by zero.
-Steven Wright, comedian (1955-)
On 10 Feb 2009, at 17:09, wayne burdick wrote:
The upshot is that
you can have
Yea in SSB the auto notch makes very quick short order of them. Every
once in a while I find myself trying to listen through it and filter
with my noodle. Then all the sudden it dawns on me and a single
button press later they are poof gone.
On Tue, Feb 10, 2009 at 9:44 AM, David Gilbert
On Feb 10, 2009, at 2/109:09 AM, wayne burdick wrote:
While it is possible to attenuate some spurious responses by moving
coax cables around, there is a firmware-based approach that we're
working on. The general idea is to shift the 1st LO and BFO a small
amount, simultaneously, when the
Wayne,
Won't the birdies still show up on a panadapter? They'll be
mysterious blips that disappear when you click on them to tune them in?
--Oliver Johns, W6ODJ
On 10 Feb 2009, at 9:09 AM, wayne burdick wrote:
The K3 is a down-conversion superhet that uses high-level signal
injection to
On Feb 10, 2009, at 3:12 PM, O. Johns wrote:
Wayne,
Won't the birdies still show up on a panadapter? They'll be
mysterious blips that disappear when you click on them to tune them
in?
It's possible, because the panadapter can show a much wider bandwidth
than the K3's crystal filter
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