still comes into play.
I'll send you a copy of my AGC tutorial offline. I hope this helps you out
some.
Date: Sat, 6 Nov 2010 19:46:11 -0400
From: n...@nf4l.com
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] APF and audio limiting
Thanks Tom.
Well, I kinda thought
Yes!
And to avoid some potential ear damage as well. Normally I wear phones, and I
think
that blast may have caused bleeding if I'd had them on then :o
Mike NF4L
On 11/6/2010 11:51 PM, Joe Subich, W4TV wrote:
Since very weak signals (which is what APF is all about) are well below
the
Thanks Don.
No, I wouldn't want all sigs to have the same audio level. I'll play with AGC
off,
and the limiter, and the AGC settings.
Mike
On 11/6/2010 9:20 PM, Don Wilhelm wrote:
Mike,
The AGC works at the IF level, not the audio level.
What that means is if you crank the AF gain way up
. END OF.
Sorry Eric, but I just feel like Joe is out here like a shark circling around
looking for someone to bite.
Date: Sat, 6 Nov 2010 20:48:14 -0400
From: li...@subich.com
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] APF and audio limiting
Remember, the AGC is only supposed
Mike,
Don's explanation is good. Remember, AGC does not bring up the level
of any signal ... only the audio gain control will do that. AGC simply
*reduces the IF gain for signals above the AGC threshold*.
Although it is intended as an analysis of the K3's AGC behavior, the
study by Jack
to be helpful. Now,
this is enough of this topic. Thank you for your input. We'll leave it here.
This doesn't even belong on the reflector.
Date: Sun, 7 Nov 2010 09:04:35 -0700
From: xda...@cis-broadband.com
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] APF and audio limiting
Anybody keeping track of the longest time for an unanswered post? Over over.
;-
On 11/4/2010 9:48 PM, Mike wrote:
I'm playing with the new APF, and trying to get a REALLY weak QSO to pop. I
have the
volume cranked up pretty good, and a REALLY strong station throws in their
call. I
On Sat, 06 Nov 2010 18:04:18 -0400, Mike n...@nf4l.com wrote:
Sounds normal to me.
Audio up too loud and APF on, then a strong signal transmits on the frequency
you are listening to
What do you think it SHOULD have done? You didn't say.
Tom
Radio Amateur N5GE
On 11/4/2010 9:48 PM, Mike
AF LIM only applies when AGC is off.
The answer is in the manual.
73,
... Joe, W4TV
On 11/6/2010 6:21 PM, Amateur Radio Operator N5GE wrote:
On Sat, 06 Nov 2010 18:04:18 -0400, Miken...@nf4l.com wrote:
Sounds normal to me.
Audio up too loud and APF on, then a strong signal transmits
Thanks Tom.
Well, I kinda thought it shouldn't blast my ears that hard. Audio *WASN'T* up
too
loud for the signal I was after. Maybe I don't understand what AGC does. That's
why I
asked the questions I did.
On 11/6/2010 6:21 PM, Amateur Radio Operator N5GE wrote:
On Sat, 06 Nov 2010
Thanks Joe.
Well, AN answer is in the manual, I'm not sure it's the only one possible.
Software
(up to a point, but I don't know what that point is in this case) is flexible
:-P .
On 11/6/2010 6:53 PM, Joe Subich, W4TV wrote:
AF LIM only applies when AGC is off.
The answer is in the manual.
@mailman.qth.net
Subject: Re: [Elecraft] APF and audio limiting
Thanks Tom.
Well, I kinda thought it shouldn't blast my ears that hard. Audio *WASN'T* up
too
loud for the signal I was after. Maybe I don't understand what AGC does.
That's why I
asked the questions I did.
On 11/6/2010 6:21 PM
tutorial offline. I hope this helps you out
some.
Date: Sat, 6 Nov 2010 19:46:11 -0400
From: n...@nf4l.com
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] APF and audio limiting
Thanks Tom.
Well, I kinda thought it shouldn't blast my ears that hard. Audio *WASN'T*
up too
loud
feel like Joe is out here like a shark circling around
looking for someone to bite.
Date: Sat, 6 Nov 2010 20:48:14 -0400
From: li...@subich.com
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] APF and audio limiting
Remember, the AGC is only supposed to bring things to the level
Mike,
The AGC works at the IF level, not the audio level.
What that means is if you crank the AF gain way up to listen to a very
weak signal, AGC action is probably not even started because the signal
level is at or near the level of the band noise - In other words, the
receiver is operation
...@subich.com; Elecraft Reflector
Subject: Re: [Elecraft] APF and audio limiting
If I said black you would say white. What's the difference. Fine, it's not
bringing the level UP to the AF Output, it's setting it TO the AF output
according to the slope setting.. Unless of course the manual is written
Um, Joe, he did not say bring up as you quoted. Are you certain that by
saying bring to the level he did not mean bring louder signals *down* to
the level of the AF gain? That's how I read it.
Your observation about the best AGC operation is excellent for
communications work. Often people have
Since very weak signals (which is what APF is all about) are well below
the level that AGC action starts, when trying to dig out such a weak
station, it may be wise to turn off AGC altogether (provided you have
set the AF limiter beforehand).
It might be wise to ask Wayne and Lyle to
I'm playing with the new APF, and trying to get a REALLY weak QSO to pop. I
have the
volume cranked up pretty good, and a REALLY strong station throws in their
call. I
thought my speakers had blown. Glad I wasn't wearing cans.
My CONFIG:AF is 18, AGC = F.
Was I doing something wrong? Anybody
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