I it permissible to use un-fcc-certified antennas that claim a certain
dBi? There are several foreign manufacturers that sell good stuff...
Jason
Tom DeReggi wrote:
With 900, the reason, we can substitue High gain Yagis, is their is no
rule to prevent the higher gain antennas as long as power is reduced.
My point is their are two set of rules.
One for conforming to proper power levels.
One for conforming to Certified antennas.
Tom DeReggi
RapidDSL & Wireless, Inc
IntAirNet- Fixed Wireless Broadband
----- Original Message ----- From: "Anthony Will"
<[EMAIL PROTECTED]>
To: "WISPA General List" <[email protected]>
Sent: Monday, January 02, 2006 10:40 PM
Subject: Re: [WISPA] FCC regs question
This only applies to the 2.4ghz ISM band there are different rules
for the 900mhz and 5.8 ISM band plus different rules for the UNII rules.
The ISM rules state, 900mhz is a total of 36dbm EIRP no mater if it
is multi point or PtP. 5.8ghz is 1 watt power and as large a antenna
you can put on it for PtP and 36dbm total EIRP for multi point.
This is how I understand the rules. You are not technically allowed
to swap out other manufacture antenna's only allowed to use lower
gain antenna from the same manufacture this is of the same basic type
that has the type acceptance registered with the FCC for any given
radio transmitter. For example if a pacwireless 18dbi flat panel is
registered you can use any flat panel from pacwireless that is 18dbi
or less in gain. Now there has been a lot of "unofficial" statements
by members of the FCC that have stated twists or bends in the antenna
selection part of the rulings but I have yet to see anything that
states otherwise on a official document.
Anthony
Tom DeReggi wrote:
Its spelled out towards the end of the document.
30 db max radio power + 6 db antenna. PTP 3 to 1 rule applies, to
use use much larger antennas at CPE side, and every 3 db antenna
gain, minus 1 db radio gain at CPE side.
Tom DeReggi
RapidDSL & Wireless, Inc
IntAirNet- Fixed Wireless Broadband
----- Original Message ----- From: "Jason"
<[EMAIL PROTECTED]>
To: "WISPA General List" <[email protected]>
Sent: Monday, January 02, 2006 1:59 PM
Subject: [WISPA] FCC regs question
List,
Can anyone tell me what the current FCC regs are regarding EIRP?
When choosing an antenna radio combo are we limited to the maximum
antenna gain that has been approved for use with that particular
radio? If so, it eliminates the Super Range 2 radio for me since
it's approved for use with only a 2 dBi antenna. Or are we limited
to the calculated EIRP (the -1 dB for each 3dBi above 6dBi
algorithm), which, would allow the use of a 16 dBi antenna with
this radio? I have read and read and it seems that this is very
open to personal interpretation. Also it's difficult to determine
what the latest ruling is.
Jason Wallace
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