Re: Noisy K-3 Receiver

Posted by K2QI on Dec 17, 2009; 5:26am
URL: http://elecraft.85.s1.nabble.com/Noisy-K-3-Receiver-tp4179505p4179761.html

Ditto here as well, and that's comparing my K3 #2730 to a stock FT-1000.

Wow, I thought it was just me.  I never gave it much of a second thought,
and just attributed the difference in noise floor/signal peaks to a more
sensitive receiver.

I've worked long pileups from 4U1UN and the FT-1000, and I don't recall ever
having as much noise-related fatigue as I get when I use the K3.  Please
don't get me wrong; I'm not bashing the K3.  It just seems the K3's noise
characteristics seem stronger and perhaps a tad harsher than what comes out
of the Yaesu.  I hope that makes sense...

73 de James K2QI

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Jim Harris
Sent: Wednesday, December 16, 2009 10:33 PM
To: Elecraft Email
Subject: [Elecraft] Noisy K-3 Receiver


Dick,

I've had the same experience as you describe.  You will get some
explanations here on the reflector that sort of make sense so I will not try
to repeat them.  What it comes down to for me is there is less usable S
meter range and amplified background noise to contend with.  A great
receiver but having to listen to that background noise is disquieting.  I
think the noise/S meter relationship needs a solid review from engineering
aimed at putting a bit of a knee at the bottom of the scale and in the
process dropping the apparent noise level.  A supersensitive receiver is
great but when all it's doing is digging out noise it's of little value.  I
agree NR and related controls help a bit on the noise but it doesn't address
the underlying situation.

Many of us over-the-hill folks have a sensitivity to noise that younger
people don't have so it may be hard for them to understand and appreciate
our concern.

Have a good day and 73.

Jim, W0EM


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