Well, I took the 4X4 up to the AP this afternoon and I swapped the PRISM II
100mW card from the PtMP position into the PtP position this, a "known" good
situation. It made a rather amazing difference on the PtP link, driving the
signal strength from -77dBm with the 15dB Orinoco up to -67dBm for the 100mW
card. A bit more than would be expected. (I wonder how these RF connectors
for the radios take physical stress, bending them around in the box that the
AP1000 is located in...the only thing that changed here was the card and the
pigtail (same length)) Receive signal strength was just as good as the
Orinoco card I swapped out, which was a bit of a surprise again, as the
Orinoco is specd as having better recv. sensitivity than the PRISM II.
Anyway, bottom line, the PRISM II 100mW card works just fine, actually
better than fine, it seems to work great, turning the backhaul into quite
the barn burner. It even seems to remotely reboot (although I didn't have
a lot of time up there and tried it only a couple of times). So, go figure.
Not sure what the problem is (was?).
Something wrong with the PtMP antenna setup perhaps. Recalculated the
downtilt and cranked it back a bit, going to see how that works out. May be
a problem with connectors (they were among my first attempts).
Apologies to Tony, and anyone else that had any doubts introduced about the
PRISM II cards. Part of the problem is that it's not easy for me to make
changes as I have to drive up to the AP, and the weather needs to be
perfect, otherwise I could have done this testing before making any noises.
I guess I was a bit bummed about the performance, as all these customers are
coming online next week and I was panicking, and wanted to know if anyone
else was seeing the same problem. (As the cards had just been introduced.)
I'll try to check my keyboard at the door next time and do more testing, and
less panicking.
Norm
----- Original Message -----
From: "Tony " <tonylist@wwwbiz.com>
To: <karlnet@WISPNotes.com>
Sent: Friday, May 10, 2002 4:36 PM
Subject: RE: [Karlnet] PRISM II 100mW card and Karlnet TC V4.02
> Norm
>
> Just to confirm, all the numbers you are reporting where from Karlnet
> TurboCell correct?? If this is the case, Doug (KN) has report to me
> that all the Prism cards report back in the same way and that the
> information can not always be trussed. They are looking into this and I
> will update you as I know more.
>
> Did you notices a difference in performance?
>
> 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
> Wireless Solution Provider
>
>
> -----Original Message-----
> From: karlnet-admin@WISPNotes.com [mailto:karlnet-admin@WISPNotes.com]
> On Behalf Of Norm Young
> Sent: Friday, May 10, 2002 5:09 PM
> To: karlnet@WISPNotes.com
> Subject: Re: [Karlnet] PRISM II 100mW card and Karlnet TC V4.02
>
>
> Yes, please, is anyone else deploying this card with Karlnet TC? I'd
> love for the problem to be other than this card, as I really, really
> need that output power.
>
> I'm really surprised at the receive sensitivity being so depressed. The
> noise reported is -102dBm on the PRISM II card, and the signal is
> reported at -101dB and the local signal reported at the laptop (Orinoco
> card, 24dB parabolic, 4' pigtail, Karlnet TC running on XP) is -80dBm,
> noise @ -99dBm,
> S/N=19 dB, distance 7.5mi from AP, good LOS, no obstructions. The AP
> is an
> AP-1000, two radios slotted, one Orinoco on CH6 as a backhaul running
> into a horizontally polarized 24dB parabolic, the other, the PRISM II
> 100mW card as the PtMP on CH11 running into a 90 degree, vertical
> polarized 15dB sector, running TC v4.02.
>
> Norm
>
>
> ----- Original Message -----
> From: "Dan Metcalf" <danm@suncorstainless.com>
> To: <karlnet@WISPNotes.com>
> Sent: Friday, May 10, 2002 11:24 AM
> Subject: RE: [Karlnet] PRISM II 100mW card and Karlnet TC V4.02
>
>
> > Anybody else see this?
> >
> >
> > Dan Metcalf
> > Wireless Broadband Systems
> > dan.metcalf@wbsysnet.com
> > 781-658-2075
> > www.wirelessbroadbandsystems.com
> >
> > -----Original Message-----
> > From: Norm Young [mailto:npyoung@applegatebroadband.net]
> > Sent: Friday, May 10, 2002 12:29 PM
> > To: karlnet@WISPNotes.com
> > Subject: Re: [Karlnet] PRISM II 100mW card and Karlnet TC V4.02
> >
> > I'm going to pull this PRISM II 100mW card, as I've discovered that
> > the reporting of the signal strength at the AP (PRISM II, Karlnet TC)
> is
> > accurate---and extremely low. I'm seeing signal strengths that are a
> good
> > 10dB below what they were with the Orinoco radio in place and all
> > other factors equal/similar. The transmit power is as expected, 5dB
> > above the Orinoco radios, but the receive sensitivity is, to say the
> > least, very disappointing.
> >
> > I'll report the findings with the Orinoco radio slotted, and perhaps
> > it
> will
> > reveal some other factor is at work, but for now, the PRISM II card is
>
> > a
> dud
> > on the receive sensitivity side. (Also the crash on reboot
> > "feature".)
> >
> >
> > Norm
> >
> > ----- Original Message -----
> > From: "Tony " <tonylist@wwwbiz.com>
> > To: <karlnet@WISPNotes.com>
> > Sent: Thursday, May 09, 2002 8:39 AM
> > Subject: RE: [Karlnet] PRISM II 100mW card and Karlnet TC V4.02
> >
> >
> > > Dong
> > >
> > > You have this card! Its the one we sent you for testing :)
> > >
> > > 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
> > > Wireless Solution Provider
> > > -----Original Message-----
> > > From: karlnet-admin@WISPNotes.com
> > > [mailto:karlnet-admin@WISPNotes.com]
> > > On Behalf Of Support
> > > Sent: Tuesday, May 07, 2002 1:18 PM
> > > To: karlnet@WISPNotes.com
> > > Subject: RE: [Karlnet] PRISM II 100mW card and Karlnet TC V4.02
> > >
> > >
> > > Norm,
> > >
> > > We see this problem with some of the higher power radios in the
> > > AP-1000 and the RG-1000. Those pieces of hardware were made for the
>
> > > 32mW radios and they will act funny with the 100mW and 200mW radios
> > > coming out. I have not seen the radio you are using, but if you want
>
> > > to send one in for testing we'd be glad to look at it for you.
> > >
> > >
> > > _______________________________________________
> > > 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
> > 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
> http://lists.wispnotes.com/mailman/listinfo/karlnet
>
>
|