That website is www.w3fpr.com.
The article was created before the AGC parameters were expanded, but the
principles are the same.
As it has been said here, turn off the preamp if it is not needed, and
even add the attenuator.
If you hear an increase in noise level when you connect an antenna,
The article regarding AGC at w3prf.com was most interesting and
informative. I am now experimenting with the AGC settings much more than
I had. So far this morning, I am enjoying the K3 far more than I have
in the past. This may just be the magic bullet for the hiss problem that
has bothered m
h.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Buck k4ia
Sent: Monday, November 26, 2012 9:04 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] need help with hiss on ssb receive
Reduce your RF gain, Use the attenuator on the lower bands.
The reason it is the same with the AGC
Reduce your RF gain, Use the attenuator on the lower bands.
The reason it is the same with the AGC on or off is because with AGC off
the receiver is running full bore amplifying all the background noise.
You must reduce your RF gain until the background noise (hiss) goes away
so the signal yo
: Saturday, November 24, 2012 3:51 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] [K3] need help with hiss on ssb receive
You have (built into the K3), a Receive only, 8 band equalizer.
It will allow you to customize the receiver so that it will sound the way
you like it.
Works great for
Could Audacity do this? It sounds interesting. I haven't tried
searching for software equalizers on the web yet. How abot Cool Edit?
73-
Nick, WA5BDU
So I built an accurate 3db/octave downsloping filter (in software) and fed
it with the K3's RX audio.
Could anyone else give this a try?
Mike,
You say it is not AGC, but I would not be certain of that statement
until you have done some trials.
I suggest you read the "noisy K3" article on my website www.w3fpr.com.
There have been changes to the AGC menu parameters since I wrote that
article, but the same principles apply.
73,
Bill,
What is your setting for AGC - THR? It sounds like you may have it set
to a low value. I have mine set to 20 (you'll need recent firmware to
enable this), and find that setting the AF gain to a comfortable
listening level positions the background band noise way down for all but
the very
You have (built into the K3), a Receive only, 8 band equalizer.
It will allow you to customize the receiver so that it will sound the way you
like it.
Works great for me.
Don't forget that hiss you hear is the normal part of the Excellent Dynamic
Range of the K3 Receiver.
Ron Durie WB4O
Hi all,
Better yet, find a place to post the actual audio clips. Then we have a
chance to offer some help. The complaints about "noisy and hissy" receive
audio goes back to first few days after shipping the first K3. In many
(most?) cases the problem has been that the complainant is unused to a v
I think it would be far more informative and far less subjective if
people who feel there is a harsher hiss from the K3 would simply run the
audio from their rig(s) to the sound card of their computer and use any
one of several free audio spectrum analyzer applications to display the
differen
Hiss is my biggest complaint regarding my K3. To cut down the irritation
I send the audio to a pair of Behringer amplified studio speakers and
cut back on the highs on the internal speaker equalizer. I also have
played considerably with the K3's RX Eq and with the AGC. Further, I
have set the A
> Sent: Friday, November 23, 2012 11:00 PM
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] [K3] need help with hiss on ssb receive
>
> I've been putting up with this hiss on receive for two years. Others have
> complained as well. It sounds like a rushing wind. Kinda
sure it would be worth the effort.
Don
~73
Don
KD8NNU
-.- -.. ---.. -. -. ..-
-Original Message-
From: Mike Rodgers
Sent: Friday, November 23, 2012 11:00 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] [K3] need help with hiss on ssb receive
I've been putting up with this hi
The pink noise rolloff effect
> is very good using the whole range spaced properly.
>
> thankyou N1EU
>
> Adrian ... vk4tux
>
>
> -Original Message-
> From: Mike Harris
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] [K3] need help with hiss on s
mpson [vk2bj...@gmail.com]
Sent: Saturday, November 24, 2012 3:02 AM
To: Scott Manthe
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] need help with hiss on ssb receive
I have never heard any hiss whatsoever with my K3 (s/n 1397) either on speaker
or headphones, CW or SSB and I am particu
: [Elecraft] [K3] need help with hiss on ssb receive
Date: Sat, 24 Nov 2012 23:41:11 +1000
´We started shipping DSP Assembly Rev D DSPs on new K3s about November
4th, 2009. That corresponds to K3-F Serial number 3626
It's a two year old k3 #5047´
Snippets of information above exclude
ct
is very good using the whole range spaced properly.
thankyou N1EU
Adrian ... vk4tux
-Original Message-
From: Mike Harris
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] need help with hiss on ssb receive
Date: Sat, 24 Nov 2012 09:47:27 -0300
Hi,
This was a common compla
I remember thinking the hiss was annoying when I got my radio. I used the eq to
knock it down.
I upgraded the DSP board within a few months of getting the K3 and now I listen
wide open on the AM filter.
I had forgotten all about the hiss till you posted this thread.
On Nov 24, 2012, at 6:47 AM
Hi,
This was a common complaint in the past. Elecraft engineered a retrofit
low pass filter for the RX DSP board which cuts off above 4kHz. Or you
can swap out for a replacement DSP board to revision D status where the
LPF is fully integrated. You might like to investigate what the status
I have never heard any hiss whatsoever with my K3 (s/n 1397) either on speaker
or headphones, CW or SSB and I am particularly sensitive to such things. My
TS590 does have some very low level hiss which I can live with Ok and I had a
TS480 which had quite pronounced hiss. The worst I have heard i
Mike,
I guess you still have your hearing. I wish I could still hear hiss. But
back to the issue at hand.
The answers to some questions might help us out. How are you listening when
you hear the hiss? By that I mean K3 speaker, headphones (brand and model),
or the Kenwood speaker? Also, have you
I've heard of this problem, but have never actually heard the problem on
my K3, which has a serial number in the 3000 range. I'm sure you'll get
numerous replies offering suggestions.
I'm curious, when you say you "hang out" on USB, does this mean you
never operate below 10 mHz? Or do you oper
I've been putting up with this hiss on receive for two years. Others have
complained as well. It sounds like a rushing wind. Kinda like old cassette tape
hiss. It's the dirty little secret no one wants to talk about and the first
thing that comes up on other forums when you mention k3. The most
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