isp-wireless@isp-wireless.com

Tron Of Borg


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I called and asked about that.

The client is NOT ptmp so he falls under the 3 for 1 rule.

You can stay in the eirp rules for ptp (client side of a ptmp is also ptp) at 60 watts (24db tx and 24db antenna).

<DELETED>

----- Original Message -----
From: <DELETED>
To: <isp-wireless@isp-wireless.com>
Sent: Saturday, March 30, 2002 4:23 PM
Subject: Cisco says Multipoint Clients can't exceed 36dB EIRP ?


>
> Now that FCC blather is cooled down, let me fire it back up..
>
> Was on the Cisco site looking for some information on their dual
> antennas (Can you hook up two different directional antennas to
> increase coverage?
> many people ask me, I think not, but some have said it works,
> has anyone actually tried and verified it??)
>
> Anyway, I ran across this Q/A, which if you believe Cisco's
> interpretation, then basically ALL ISPs are in violation of FCC rules,
> as a client-side 24dBi antenna w/15dbm output (lucent) radio
> exceeds 4 watts (36dbm) EIRP, not to mention those 100mw cards, or 250mw
> amps..
>
> I have asked the FCC about this a year ago, and was told clients are
> considered point-to-point, but they would not give it to me in
> writing.. Cisco seems to believe differently.
>
> http://www.cisco.com/warp/public/102/wlan/radio-faq.html#Q6
>
>
> Q. The FCC limits the maximum system power to 4 watts Effective
> Isotropically Radiated Power (EIRP) for non point-to-point systems.
> However, a properly tested and certified system is allowed to exceed
> the 4W EIRP for a point-to-point system. I have two parabolic dishes
> aimed at an Omni. Can I exceed the 4W EIRP limit if I consider each
> leg point-to-point?
>
> A. No. The FCC defines the system using directional gain antennas
> as only part of the complete system. You cannot
> exceed the 4W EIRP for any of the legs of this system since the
> whole system is a point to multipoint. This topic is defined
> in FCC docket 96-8, which covers the spread spectrum transmitter.
>



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