The vertical sector change to horizontal will certainly help. He have a
system with an 18dB amp and are seeing s/n ratios about 5-10dB and they
generally work. It's not the best signal to noise ratio, but we see 10-15dB
change when we go horizontal.
One thing that you will find is that the front to back ratio on the TilTek
antenna is really bad...sometimes actually have gain off of the back of the
antenna! Be aware of that.
The 19dBi patch antennas from YDI, however "light duty" do work quite well
and are very tight. I have had good luck with them. They work as well as
the PMANT21 grid antennas!
-----Original Message-----
From: karlnet-admin@WISPNotes.com [mailto:karlnet-admin@WISPNotes.com]On
Behalf Of George Minich
Sent: Wednesday, November 13, 2002 7:11 PM
To: karlnet@WISPNotes.com
Subject: Re: [Karlnet] SNR at base?
To all that have asked: I am using a 19 dbi grid on the satellite that is
about 1.5 miles from the base. The base antenna is a 12dbi Tiltek with 120
degree coverage. The noise hovers in the -75db region. This seems a bit
high however I am using an amp. The client side has a 35 to 40db SNR and
typically sees noise in the -90db region. I think I may be in a high noise
area. I sometimes see the noise dip down to -82db for 10 to 20 seconds at a
time and then back up to -75. I am going to replace the vertical sector
with a horizontal model. I do manage a 290Kbyte up/download with this
config so it can't be that bad.
Someone had mentioned that I should use an 18dbi patch at the satellite.
Do patches usually "throw" the signal better? I am just waiting for another
person to lite-up a 2.4Ghz telephone!
George
----- Original Message -----
From: "Bob Hrbek" <bhrbek@jagwireless.com>
To: <karlnet@WISPNotes.com>
Sent: Tuesday, November 12, 2002 11:54 PM
Subject: Re: [Karlnet] SNR at base?
> sounds kind of weak for an amped signal. Are you using an amp at the AP
as
> well? But what distance are we talking about here...what do the RF calcs
> say and what is the noise floor?
>
>
> ----- Original Message -----
> From: "George Minich" <gminich@toshiba.ca>
> To: <karlnet@WISPNotes.com>
> Sent: Tuesday, November 12, 2002 10:29 PM
> Subject: [Karlnet] SNR at base?
>
>
> > Would you guys consider a 19db SNR at the base of an amped setup a
good
> > SNR? Some customers further out have a 15 to 17db. This seems low, but
> is
> > about the best I was able to score. This is through the use of 19dbi
> grids
> > at the satellite end. What do you guys typically see for base SNR if
your
> > base is amped?
> >
> > Thanks
> >
> > George
> >
> > ----- Original Message -----
> > From: "Demarc (tony) 908-996-7995" <tonylist@wwwbiz.com>
> > To: <karlnet@WISPNotes.com>
> > Sent: Tuesday, November 12, 2002 10:57 PM
> > Subject: RE: [Karlnet] KN Throughput
> >
> >
> > > John
> > >
> > > You can do this with two AP-1000 and good LOS and RF level to about to
> > > about 5Mb. With a little tweaking to get it optimal performance. Email
> > > me off list and we can go thought the details.
> > >
> > > Sincerely
> > > Tony Morella
> > > Demarc Technology Group
> > > Office: 908-996-7995
> > > Cell: 908-246-9170
> > > Fax: 908-847-0202
> > > email: tony@demarctech.com
> > > http://www.demarctech.com
> > > Open Chat Server http://www.demarctech.com:8000
> > > Yahoo IM: tonymorella
> > > Wireless Solution Provider
> > >
> > >
> > > > -----Original Message-----
> > > > From: karlnet-admin@WISPNotes.com
> > > > [mailto:karlnet-admin@WISPNotes.com] On Behalf Of John Maxwell
> > > > Sent: Tuesday, November 12, 2002 8:26 PM
> > > > To: karlnet@WISPNotes.com
> > > > Subject: [Karlnet] KN Throughput
> > > >
> > > >
> > > > Anyone out there know the actual throughput that we can get
> > > > on a KN TC PtP link? To this point, I've only seen about
> > > > 2mbps at the most. I understood that they could do about 5-6mbps.
> > > >
> > > > Any words of wisdom?
> > > >
> > > > _______________________________________________
> > > > Karlnet mailing list
> > > > Karlnet@WISPNotes.com
> > > > http://lists.wispnotes.com/mailman/listinfo/ka> rlnet
> > > >
> > >
> > > _______________________________________________
> > > Karlnet mailing list
> > > Karlnet@WISPNotes.com
> > > http://lists.wispnotes.com/mailman/listinfo/karlnet
> > >
> > >
> >
> > _______________________________________________
> > Karlnet mailing list
> > Karlnet@WISPNotes.com
> > http://lists.wispnotes.com/mailman/listinfo/karlnet
> >
>
> _______________________________________________
> Karlnet mailing list
> Karlnet@WISPNotes.com
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>
>
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