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RE: [Karlnet] Conversion of SNR values to dB

To: "Karlnet Mailing List" <karlnet@WISPNotes.com>
Subject: RE: [Karlnet] Conversion of SNR values to dB
From: "Brady McFarland" <b.mcfarland@a-m-u.net>
Reply-to: Karlnet Mailing List <karlnet@WISPNotes.com>
Date: Fri, 14 Nov 2003 08:19:12 -0600
List-post: <mailto:karlnet@WISPNotes.com>
Well if you ever decide to share I would LOVE to get my hands on this.






-----Original Message-----
From: karlnet-bounces@WISPNotes.com
[mailto:karlnet-bounces@WISPNotes.com]On Behalf Of Phil
Sent: Thursday, November 13, 2003 9:01 PM
To: 'Karlnet Mailing List'
Subject: RE: [Karlnet] Conversion of SNR values to dB


Well what I am using is not even close to any sort of public use, its
kind of an internal use/hack/plaything/experiment.  But the
prerequisites would be a BSD/Linux/etc. machine with Perl, Cricket for
easier data collecting (but any data collector would do, some possibly
faster even but this one is easy), RRDTool, Apache and what ever else is
required for Cricket and RRDTool, etc., like Tom Boutell's GD library
and libPNG, plus some Perl modules like Time::HiRes and Net::SNMP I am
guessing off the top of my head.


-----Original Message-----
From: karlnet-bounces@WISPNotes.com
[mailto:karlnet-bounces@WISPNotes.com] On Behalf Of Bob Hrbek
Sent: Thursday, November 13, 2003 6:09 PM
To: Karlnet Mailing List
Subject: Re: [Karlnet] Conversion of SNR values to dB

WOW, that is really nice.  care to share? :)

----- Original Message ----- 
From: "Phil" <phil@succeed.net>
To: "'Karlnet Mailing List'" <karlnet@WISPNotes.com>
Sent: Thursday, November 13, 2003 7:28 PM
Subject: RE: [Karlnet] Conversion of SNR values to dB


> Ok here's a few examples:
> 
> http://users.succeed.net/~philliph/karlnet/
> 
> 
> -----Original Message-----
> From: karlnet-bounces@WISPNotes.com
> [mailto:karlnet-bounces@WISPNotes.com] On Behalf Of Ben Polson
> Sent: Thursday, November 13, 2003 12:38 PM
> To: Karlnet Mailing List
> Subject: RE: [Karlnet] Conversion of SNR values to dB
> 
> Thanks Phil.  Sure, I'd love to see what this has produced for you.
> 
> > -----Original Message-----
> > From: karlnet-bounces@WISPNotes.com
> > [mailto:karlnet-bounces@WISPNotes.com]On Behalf Of Phil
> > Sent: Thursday, November 13, 2003 12:33 PM
> > To: 'Karlnet Mailing List'
> > Subject: RE: [Karlnet] Conversion of SNR values to dB
> > 
> > 
> > I'm not sure if it is correct but I've been dividing by 2 and then
> > subtracting 95.  I can show some examples of my S/N graphs that I
> > generate for all of our customers and APs if anyone wants to see
them.
> > (not attached of course)
> > 
> > 
> > -----Original Message-----
> > From: Ben Polson [mailto:bsp@bandwave.net] 
> > Sent: Tuesday, November 04, 2003 11:33 AM
> > To: Karlnet Mailing List
> > Subject: [Karlnet] Conversion of SNR values to dB
> > 
> > Does anyone know the algorithm to convert the INTEGER values
returned
> > from
> > the OIDs for signal and noise into dB values?
> > 
> > A signal value of 86 and noise value of 10 aren't as helpful as the
dB
> > values.  Thanks in advance.
> > 
> > -Ben.
> > 
> > _______________________________________________
> > Karlnet mailing list
> > Karlnet@WISPNotes.com
> > http://lists.wispnotes.com/mailman/listinfo/karlnet
> > 
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