Re: [WISPA] FCC regs question
For anyone that cares to fact check this the guy at the FCC to talk to is John Reed. He wrote much of the part-15 rules. I ask him whenever I'm not sure. Here goes: 900 mhz. max of 36 dB eirp. Period. Max radio output of 30 dB (1 watt) period. 5.1 is indoor only, very low power. I don't remember how much but I'm thinking 250mw or some such. 5.3 (sometimes called 5.2) 30 dB period. never more. I think the radios are limited to 24 dB (250mw). You CAN drop the radio output and run higher gain antennas and get very long ranges. We used to run a lot of 10 to 15 mile ptp links with Wireless Inc. radios. 5.7 (unii) has a strange power rule to it. I can't remember how it all works exactly, stick with manufacturer advice. 5.8 36 dB max for ptmp. for ptp (remember, customers are considered ptp) it's max of 30 dB of radio output, no limit on antenna gain. OK, now for the most confusing one. 2.4. PTMP is 36 dB. Unless you run an active antenna or switched multiple sector distribution point that sees very small sectors then you can follow the ptp rules up to a certain point. Vivato and Navini are the only companies I know of that are certified under these rules. It's actually a much better idea for rural than urban deployments due to noise levels. 2.4 ptp is max of 30 dB (1 Watt) of radio (or amp) tx power and 6 dB of antenna gain. After that it's down one on tx power and up 3 dB on antenna gain. You can, legally run 10,000 watts at 2.4. All you need is one of those NASA type antennas to do it :-). On the certification thing. All antennas use have to be of the same type (yagi, grid, dish, panel, omni, sector etc.), same pattern and equal or lesser gain than what's been certified. If you are running radios that are certified only with 2.2 dB rubber ducky antennas, then you can't put anything bigger than that on them. Penalties for not following the rules range from fines to replacement of the offending gear. Thus far I know of NO one that's been shut down but I do know of people who've had to change things out or get equipment specially certified. Hope that helps, Marlon (509) 982-2181 Equipment sales (408) 907-6910 (Vonage)Consulting services 42846865 (icq)And I run my own wisp! 64.146.146.12 (net meeting) www.odessaoffice.com/wireless www.odessaoffice.com/marlon/cam - Original Message - From: Anthony Will [EMAIL PROTECTED] To: WISPA General List wireless@wispa.org Sent: Monday, January 02, 2006 7:40 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 wireless@wispa.org 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 -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA
Re: [WISPA] FCC regs question
So, can I use a radio capable of more than the legal limit as long as I turn it down to a legal level programatically? Yes, that is correct. Tom DeReggi RapidDSL Wireless, Inc IntAirNet- Fixed Wireless Broadband - Original Message - From: Jason [EMAIL PROTECTED] To: WISPA General List wireless@wispa.org Sent: Monday, January 02, 2006 7:54 PM Subject: Re: [WISPA] FCC regs question So, can I use a radio capable of more than the legal limit as long as I turn it down to a legal level programatically? Tom DeReggi wrote: Jason, 1. My ap with 3 separate 120deg sectors and radios is limited to 1 watt EIRP per sector/radio, because it is PtMP. No. Each AP radio/antenna combination is allowed a total of 36 db EIRP (4watt). (radio itself not to exceed 30 db + additional antenna 6 db, however no reason radio power can't be less and antenna power more. ) 2. My cpe's get the 3 to 1 rule because they are PtP Right? Correct. More questions: 1. What about using types of antennas that are not certified with the radio, ie, sectors where no sector is approved? This is not so clear. Its been ruled that you know longer need to use a certified antenna, as long as the substituted antenna is of equivellent design of certified antennas, and of lesser gain. Responsibility to broadcast at proper levels is not removed. You are then taking that responsibility that you are personally certifying the antenna is within the limits and specification. 2. Where can I determine the types of antennas that have been certified with a given radio? Contact the manufacturer. Also you can look up the FCCID of the radio. I believe they list the antennas that were certified with it by manufacturer. Tom DeReggi Jason 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 wireless@wispa.org 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 -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] FCC regs question
Except it is a gray area. technically it says use antenna of similar design of lesses gain. So if you use a higher gain antenna, and lower power, is it living up to that same requirement. In otherwords are they taking about less gain from the system EIRP or Less gain from the antenna. The idea is that if you lower gain in the radio, you are actually doing less harm to the enviroment and noise floor because you are also reducing beanwidth, WITHOUT increasing power. So the intent of the rule is that we should be able to do anything that provides less harm to those around us regarding noise. Lower EIRP regardless of the methid it is achieved is beneficial to the enviroment and in line with the intent of the rule. However, it could be argued, that they do not want to allow antennas of non-similar design when radio power is reduced, because it allows WISPs to easilly on the fly abuse the power limits. I'm not sure that its been ruled on. I'm not sure that we want it ruled on. I think the FCC is watching to see what happens. To see if WISP scan handle the responsibility of not abusing the rules. All the FCC wants is to reduce intererence so more people can deploy and get along. They are not going to go after anyone living by that same goal. At least that is my take. I've been given different answers at different times. I've been told lower EIRP suffices, others said technically thats not correct, iit states similar antenna design of lesser gain. Tom DeReggi RapidDSL Wireless, Inc IntAirNet- Fixed Wireless Broadband - Original Message - From: Jason [EMAIL PROTECTED] To: WISPA General List wireless@wispa.org Sent: Monday, January 02, 2006 7:54 PM Subject: Re: [WISPA] FCC regs question So, can I use a radio capable of more than the legal limit as long as I turn it down to a legal level programatically? Tom DeReggi wrote: Jason, 1. My ap with 3 separate 120deg sectors and radios is limited to 1 watt EIRP per sector/radio, because it is PtMP. No. Each AP radio/antenna combination is allowed a total of 36 db EIRP (4watt). (radio itself not to exceed 30 db + additional antenna 6 db, however no reason radio power can't be less and antenna power more. ) 2. My cpe's get the 3 to 1 rule because they are PtP Right? Correct. More questions: 1. What about using types of antennas that are not certified with the radio, ie, sectors where no sector is approved? This is not so clear. Its been ruled that you know longer need to use a certified antenna, as long as the substituted antenna is of equivellent design of certified antennas, and of lesser gain. Responsibility to broadcast at proper levels is not removed. You are then taking that responsibility that you are personally certifying the antenna is within the limits and specification. 2. Where can I determine the types of antennas that have been certified with a given radio? Contact the manufacturer. Also you can look up the FCCID of the radio. I believe they list the antennas that were certified with it by manufacturer. Tom DeReggi Jason 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 wireless@wispa.org 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 -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] FCC regs question
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 wireless@wispa.org 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 wireless@wispa.org 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 -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] FCC regs question
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 wireless@wispa.org 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 wireless@wispa.org 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 -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] FCC regs question
Tom List, To verify that I understand, 1. My ap with 3 separate 120deg sectors and radios is limited to 1 watt EIRP per sector/radio, because it is PtMP. 2. My cpe's get the 3 to 1 rule because they are PtP Right? More questions: 1. What about using types of antennas that are not certified with the radio, ie, sectors where no sector is approved? This is not so clear. 2. Where can I determine the types of antennas that have been certified with a given radio? Jason 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 wireless@wispa.org 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 -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] FCC regs question
Jason, 1. My ap with 3 separate 120deg sectors and radios is limited to 1 watt EIRP per sector/radio, because it is PtMP. No. Each AP radio/antenna combination is allowed a total of 36 db EIRP (4watt). (radio itself not to exceed 30 db + additional antenna 6 db, however no reason radio power can't be less and antenna power more. ) 2. My cpe's get the 3 to 1 rule because they are PtP Right? Correct. More questions: 1. What about using types of antennas that are not certified with the radio, ie, sectors where no sector is approved? This is not so clear. Its been ruled that you know longer need to use a certified antenna, as long as the substituted antenna is of equivellent design of certified antennas, and of lesser gain. Responsibility to broadcast at proper levels is not removed. You are then taking that responsibility that you are personally certifying the antenna is within the limits and specification. 2. Where can I determine the types of antennas that have been certified with a given radio? Contact the manufacturer. Also you can look up the FCCID of the radio. I believe they list the antennas that were certified with it by manufacturer. Tom DeReggi Jason 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 wireless@wispa.org 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 -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] FCC regs question
So, can I use a radio capable of more than the legal limit as long as I turn it down to a legal level programatically? Tom DeReggi wrote: Jason, 1. My ap with 3 separate 120deg sectors and radios is limited to 1 watt EIRP per sector/radio, because it is PtMP. No. Each AP radio/antenna combination is allowed a total of 36 db EIRP (4watt). (radio itself not to exceed 30 db + additional antenna 6 db, however no reason radio power can't be less and antenna power more. ) 2. My cpe's get the 3 to 1 rule because they are PtP Right? Correct. More questions: 1. What about using types of antennas that are not certified with the radio, ie, sectors where no sector is approved? This is not so clear. Its been ruled that you know longer need to use a certified antenna, as long as the substituted antenna is of equivellent design of certified antennas, and of lesser gain. Responsibility to broadcast at proper levels is not removed. You are then taking that responsibility that you are personally certifying the antenna is within the limits and specification. 2. Where can I determine the types of antennas that have been certified with a given radio? Contact the manufacturer. Also you can look up the FCCID of the radio. I believe they list the antennas that were certified with it by manufacturer. Tom DeReggi Jason 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 wireless@wispa.org 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 -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
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 wireless@wispa.org 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 -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
