According to Marlin, they are considering an AP using directional antenna as falling under the PtP rules....from what I remember from the other list this came from the FCC official at the last WISPCON.
JH ----- Original Message ----- From: "Eje Gustafsson" <[EMAIL PROTECTED]> To: "John Mooring" <[EMAIL PROTECTED]> Sent: Tuesday, July 01, 2003 9:34 PM Subject: Re: [smartBridges] Only getting 300K from Ranchos Access Point > for ptmp base station your NEVER allowed to go over 36dB. The 3 to 1 > rule is only for point to point or client to base communication where > 1dB drop in radio power can be substituted with 3dB gain on antenna so > you can do 48dB (24dB radio and 24dB antenna which is -6dB on radio > and +18dB on antenna from the base 30dB and 6dB) > > Best regards, > Eje Gustafsson mailto:[EMAIL PROTECTED] > The Family Entertainment Network http://www.fament.com > Phone : 620-231-7777 Fax : 620-231-4066 > - Your Full Time Professionals - > Routers, Wireless and misc online catalog http://www.fament.com/catalog/ > --- > searchable smartBridges mailing list archive. > http://www.mail-archive.com/smartbridges40part-15.org/ > -- > JM> RE: [smartBridges] Only getting 300K from Ranchos Access PointOK, one last > JM> thing on the amp and then an actual answer to help my fellow WISP'er. > > JM> Remember when calculating your total output that the FCC only allows 36dBm > JM> EIRP (4 watts)! Transmitted power must be configured correctly to prevent > JM> potential interference problems due to the effective isotropic radiated > JM> power exceeding the limits as defined in FCC part 15.247(i). As defined in > JM> FCC part 15.247(i), the power transmitted by the transmitter can only have a > JM> maximum power level of 1 watt or 30dBm. The antenna can only have a maximum > JM> gain of 6dBi. If the power at the transmitter is lowered by 1dB, the antenna > JM> gain can be increased by an additional 3dB. For example, if an installation > JM> reduced power at the transmitter to 29dBm, it could use an antenna having a > JM> gain of 9dBi. In general, for every 1dB power reduction at the transmitter > JM> from 30dBm, an installation can add 3dB gain at the antenna. A breakdown of > JM> transmitter versus antenna gain is as follows: 30dBm transmit - 6dBi antenna > JM> ... 29dBm transmit - 9dBi antenna ... 28dBm transmit - 12dBi antenna ... > JM> 27dBm transmit - 15dBi antenna ... 26dBm transmit - 18dBi antenna ... 25dBm > JM> transmit - 21dBi antenna ... 24dBm transmit - 24dBi antenna > > JM> Your 5Watt amp translates to 37dBm on its own without the radio or antenna. > > JM> But back to your problem with speed. Change the mtu size on your clients to > JM> something higher than factory Microsoft, and set the Fragmetation Threshhold > JM> to about 1496 (play with this setting to get the best result) > > JM> Please be weary of uncle Charley, he may pay us all a visit when we least > JM> expect it. > > JM> John Mooring > JM> -----Original Message----- > JM> From: [EMAIL PROTECTED] > JM> [mailto:[EMAIL PROTECTED] Behalf Of phantam > JM> Sent: Tuesday, July 01, 2003 10:30 PM > JM> To: '[EMAIL PROTECTED]' > JM> Subject: RE: [smartBridges] Only getting 300K from Ranchos Access Point > > > JM> Ahh buh humbug im putting up 20db 120 sectors with 750mw amps and > JM> smartbridges at max output :) Lets see my competitors talk over that since > JM> they liked causing too much noise before MUHAHAHAHAA although I am not in > JM> the US so its kewl :) > > JM> Try simplespeed, is that kB or kb if its kb then im not sure what could be > JM> wrong, whats the speed from the APPO to the noc have u tested this > JM> throughput? > > JM> Chris > > JM> -----Original Message----- > JM> From: Jerry Bacon [mailto:[EMAIL PROTECTED] > JM> Sent: Tuesday, July 01, 2003 10:25 PM > JM> To: [EMAIL PROTECTED] > > JM> I don't see how you can be within legal limits. The amp output is +27dBm > JM> and > JM> the antenna adds 14dB to that giving you an EIRP of about +41dBm less the > JM> cable losses. Seems to me that it's about 4 or 5dB over the limit. > > JM> -- > JM> Jerry B. > > JM> "The optimist proclaims that we live in the best of all possible worlds, > JM> and > JM> the pessimist fears this is true." - James Cabell > > JM> ----- Original Message ----- > > JM> The power on the radio is set to stay within legal limits. > > JM> The PART-15.ORG smartBridges Discussion List > JM> To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe > JM> smartBridges <yournickname> > JM> To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe > JM> smartBridges) > JM> Archives: http://archives.part-15.org > > --- > [This E-mail scanned for viruses by Declude Virus] > > The PART-15.ORG smartBridges Discussion List > To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe smartBridges <yournickname> > To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe smartBridges) > Archives: http://archives.part-15.org The PART-15.ORG smartBridges Discussion List To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe smartBridges <yournickname> To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe smartBridges) Archives: http://archives.part-15.org
