anybody else do this?

[Steve Jackson-5]

"I don't know if anybody else on the reflector does
this, but everytime I turn my K2 on, and use if on a
DX-ped hour after hour, I sit and look at this itty
bitty radio, and am just amazed at how something so
small, can be so
good!  anybody else do this?"


Yes.  This is normal behavior.

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[k6dgw]

Yes Steve, don't be alarmed.  It is totally normal, you are not in
danger, only good will happen, although this is unknown to those devoid
of Elecraft radios.  Since my learning curve on new radios is about one
button/knob/menu setting every six months or so, the K2 was great!  Not
that I've mastered it all, but it sure does work!

Fred K6DGW
Auburn CA CM98lw

"QBK?:  How many knobs does your radio have?"
"QKN?:  How many of those do you know how to use?"

Steve Jackson wrote:
> "I don't know if anybody else on the reflector does
> this, but everytime I turn my K2 on, and use if on a
> DX-ped hour after hour, I sit and look at this itty
> bitty radio, and am just amazed at how something so
> small, can be so
> good!  anybody else do this?"
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[Steven Pituch]

Hi all,
I have been doing CW nets on 40 meters for a few weeks with a lot of
success.  I went down to 80 meters just now to try an 80 meter cw net, and I
am hearing all these NC contest stations.  One guy sounds like a buzzsaw.  I
try to tune him in but the signal quality is awlful.  So I go up 5 kHz and
find another raspy station... and another... and another.  All of 80 meters
sounds raspy, even the lsb guys.  I go to 40m and 20 meters and the signals
seem fine.  The filters seem like they are in top shape also.  The rig is a
K2(#402)/100 with KAT100 and KDSP.  Never experienced a problem until now.
Any ideas?

Steve, W2MY

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[Mike WA8BXN]

Probably totally unrelated, but I once heard something like that (using a
different radio) that was caused by the noise blanker being on and picking
up a lot of impulse noise on the band. It was most noticed on strong signals
 
73/72 - Mike WA8BXN
 
 
-------Original Message-------
 
From: Steven Pituch
Date: 02/26/06 21:06:07
To: 'Elecraft Reflector'
Subject: [Elecraft] Raspy sounds on 80 meters
 
Hi all,
I have been doing CW nets on 40 meters for a few weeks with a lot of
success. I went down to 80 meters just now to try an 80 meter cw net, and I
am hearing all these NC contest stations. One guy sounds like a buzzsaw. I
try to tune him in but the signal quality is awlful. So I go up 5 kHz and
find another raspy station... and another... and another. All of 80 meters
sounds raspy, even the lsb guys. I go to 40m and 20 meters and the signals
seem fine. The filters seem like they are in top shape also. The rig is a
K2(#402)/100 with KAT100 and KDSP. Never experienced a problem until now.
Any ideas?
 
Steve, W2MY
 
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[Ron D'Eau Claire-2]

That can also be caused by having a strong signal from a BC band station in
the neighborhood. The noise blanker, in order to do it's thing, MUST turn
the I.F. signal path off an on at a fairly high rate of speed (once per
pulse of noise).

That process turns it into a mixer, just looking for signals to mix together
to produce an endless array of strange-sounding effects. That's why the
manual advises using the noise limiter ONLY when it's really needed!

As you get closer to the BC Band it's easier for a strong broadcast signal
to put enough RF into the front end for a problem-causing amount to make it
in where it can do mischief.

Some of our European friends have to cope with that sort of stuff around 40
meters because of their proximity to many of those huge SW broadcasting
stations.

Another possibility to investigate is a transformer on the operating table.
Some ops have reported hearing a buzz or 'raspiness' on signals more on one
band than others due to AC magnetic fields around the K2.

Ron AC7AC

-----Original Message-----

Probably totally unrelated, but I once heard something like that (using a
different radio) that was caused by the noise blanker being on and picking
up a lot of impulse noise on the band. It was most noticed on strong signals
 
73/72 - Mike WA8BXN
 
 
-------Original Message-------
Hi all,
I have been doing CW nets on 40 meters for a few weeks with a lot of
success. I went down to 80 meters just now to try an 80 meter cw net, and I
am hearing all these NC contest stations. One guy sounds like a buzzsaw. I
try to tune him in but the signal quality is awlful. So I go up 5 kHz and
find another raspy station... and another... and another. All of 80 meters
sounds raspy, even the lsb guys. I go to 40m and 20 meters and the signals
seem fine. The filters seem like they are in top shape also. The rig is a
K2(#402)/100 with KAT100 and KDSP. Never experienced a problem until now.
Any ideas?
 
Steve, W2MY
 
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[Tom Althoff]

Steve -  Most likely a magnetic field problem.

I had a similar experience.  I've learned to keep the Titan II and its huge
transformer at least 2 feet from the K2 when it is turned on etc.

But I got caught recently with a Radio Shack giant LED 24 hour clock.  It is
the same width as the K2 and looks really slick on top of it.   After
scratching my head trying to move the rotator control box, the Ten-Tec 1amp
supply and its transformer away from the K2 I finally lifted up the
clock...the distortion went a way.   There must be a decent sized
transformer in the bottom of the clock case.

Have you moved anything closer to the K2 than before?

I wonder if this can be turned into a "feature" so we can add 10M FM to the
K2 from an external audio signal fed into a big coupling coil under the K2?
<<<<<<< THIS IS A JOKE NOT A FEATURE REQUEST!!

73 de Tom K2TA


----- Original Message -----
From: "Steven Pituch" <[hidden email]>
To: "'Elecraft Reflector'" <[hidden email]>
Sent: Sunday, February 26, 2006 9:04 PM
Subject: [Elecraft] Raspy sounds on 80 meters

> Hi all,
> I have been doing CW nets on 40 meters for a few weeks with a lot of
> success.  I went down to 80 meters just now to try an 80 meter cw net, and
> I
> am hearing all these NC contest stations.  One guy sounds like a buzzsaw.
> I
> try to tune him in but the signal quality is awlful.  So I go up 5 kHz and
> find another raspy station... and another... and another.  All of 80
> meters
> sounds raspy, even the lsb guys.  I go to 40m and 20 meters and the
> signals
> seem fine.  The filters seem like they are in top shape also.  The rig is
> a
> K2(#402)/100 with KAT100 and KDSP.  Never experienced a problem until now.
> Any ideas?
>
> Steve, W2MY
>
> --
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.1.375 / Virus Database: 268.1.0/269 - Release Date: 2/24/2006
>
>
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> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
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>
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[Steven Pituch]

Hi all,
Thanks for the feedback on my problem.  I had just inserted a wattmeter
between my KAT100 and KPA100 in the EC2 case.  So I immediately suspected
that.  But  when I removed it the buzz remained.  The Astron VS-35M is close
to my EC2 but never had a problem before.  I was about to run the rig from
golf cart batteries when it suddenly hit me.  That morning I had plugged
between the AC line and the VS-35M an ICE Model 475 "AC Line RFI/Noise
Filter & Overvoltage assembly", that I had purchased at the local hamfest
for $2.  I even took it apart to inspect it.   Its in an aluminum case.
When I removed this device, the buzz went away.  Its located about 6 feet
away from the EC2 and K2.

So now I have a nice $2 aluminum case for my next QRP project. ;8)

Thanks again,
Steve, W2MY

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