I do have to agree with the comments for the NB in the K2. I do have power
line noise in my QTH which seems to be unaffected by the K2NB, especially
when it falls below an S9 level, which sometimes can be the limiting factor
in completing a QSO.
The majority of the time I have to engage the
On Sun, 2 Jan 2005, Marinos Markomanolakis, M.D. wrote:
For example an expensive and/or difficult to build but optimized NB module
will be FAR more desirable and effective feature in a real world Rx
performance improvement rather than a similar DSP module that is already
available from
@mailman.qth.net
Sent: Sunday, January 02, 2005 12:05 PM
Subject: Re: [Elecraft] Question about KNB2 Noise Blanker
On Sun, 2 Jan 2005, Marinos Markomanolakis, M.D. wrote:
snip
Couldn't agree more...I live in a very old part of the city
here...surrounded by
industrial users of power, a leaking power
Partial repeat of Marinos Markomanolakis, M.D. 2 Jan/05
For a receiver of the K2 caliber, I believe, it is worth every penny and
construction effort, even if it means incorporating a pre-made surface
mount module for the NB in order to improve on the NB area which seems to
be
suboptimal.
For
See comments below:
- Original Message -
From: VR2BrettGraham [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Saturday, January 01, 2005 9:37 AM
Subject: Re: [Elecraft] Question about KNB2 Noise Blanker
(GainreductioninNB2 posit...
W3FPR replied to KH6AT that gated noise
W3FPR added:
W3FPR replied to KH6AT that gated noise blankers cannot be expected
to work when the noise pulse is insufficient to reach the gating threshold
that more signal might improve performance when blanking weak
noise. Sounds reasonable, but...
I believe my other radios have gated
[EMAIL PROTECTED] added:
Er, I think people who don't have any trouble with it have no
inclination to respond. While I don't think it's the best noise blanker
I've ever used, my K2 is unusuable at my urban location without it.
True - as well as folks who are fortunate not to need to use the
On Sat, Jan 01, 2005 at 05:20:19PM -0800, Hisashi T Fujinaka wrote:
On Sun, 2 Jan 2005, VR2BrettGraham wrote:
My impression is that whenever there is mention of the KNB2, there are
more posts about its ineffectiveness than anything else, as is the case
with this current thread.
Er, I
For what it's worth, with just one button press, my KNB2 will blank out
some pretty ugly pulse noise where I live that the blanker in my Ten-Tec
Orion only barely touches. Not bad for one dinky little board, in my
opinion.
73 all,
Bob WA4FOM
___
]
To: Bryce A. Carr [EMAIL PROTECTED]; Mike Morrow [EMAIL PROTECTED];
elecraft@mailman.qth.net
Sent: Friday, December 31, 2004 1:14 AM
Subject: Re: [Elecraft] Question about KNB2 Noise Blanker (Gain
reductioninNB2 posit...
Bryce,
Certainly, when the noise pulse is not strong enough to reach
Hello all,
I just completed the KNB2 and added it to my K2 transceiver.
All menu indications are as they should be and the blanker seems to be
working correctly in the NB1 mode at both HI and LO THR settings. The
receiver gain seems normal.
I have a question about using the noise blanker in
On Thu, 30 Dec 2004 05:46:52 EST, [EMAIL PROTECTED] wrote:
Hi Ken,
This effect of gain reduction when NB2 is selected does not happen on my K2.
A question is are you receiving large doses of noise that the blanker is
removing as the operation of a noise blankers is to cut out the affected
[EMAIL PROTECTED] wrote:
Hi Ken,
This effect of gain reduction when NB2 is selected does not happen on my K2.
Hi Chaps.
Thanks to all for the replies.
I have fixed the problem now. It was the 2N7000 FET (Q6) on the KNB2
board. I used an anti-static wrist strap and mat during
Stewart wrote:
No loss of signal when switching in my NB, but it is very selective
on what type of noise it blanks.
The very simple noise blankers of the K1 and K2 seem to help only on ignition,
motor commutator, and other such similar noise. These blankers seem completely
ineffective on all
I've had the opposite luck. My K2 takes out local electrical noise and
ignition noise where my TS-570S and IC-746 noise blankers didn't do a thing.
I've been very happy with the noise blanker in my K2 and think that's been the
best option for the buck!
pleased with the blanker. That, plus the NR mode
of the KDSP2 provides really good noise reduction.
Doug
W6JD
K2/100 #1626
- Original Message -
From: [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Thursday, December 30, 2004 8:52 AM
Subject: Re: [Elecraft] Question about KNB2 Noise
: Thursday, December 30, 2004 6:43 AM
Subject: Re: [Elecraft] Question about KNB2 Noise Blanker (Gain reduction
inNB2 posit...
Stewart wrote:
No loss of signal when switching in my NB, but it is very selective
on what type of noise it blanks.
The very simple noise blankers of the K1 and K2
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