topic Re: how many 5.2 dbi omni antena at 2.4 GHz to use for 1250 seri in Wireless https://community.cisco.com/t5/wireless/how-many-5-2-dbi-omni-antena-at-2-4-ghz-to-use-for-1250-series/m-p/1149727#M186793 <HTML><HEAD></HEAD><BODY><P>Hi Abdul! It's a bit confusing getting going on the 1252s, so hopefully this helps a bit.</P><P></P><P>1. You only need one antenna to support all the protocols (a/b/g/n). However, adding more antennas increases functionality. You're no doubt used to seeing two antennas per AP in standard 802.11a/b/g networks, and this helps to reduce multipath interference, thus improving the quality of the wireless transmissions/receptions. However, to take advantage of all the features that makes 802.11n so great, you will need three antennas.</P><P></P><P>2. Correct, 3 are for the 2.4GHz range, 3 are for the 5GHz range.</P><P></P><P>3. There are actually only two radios in the 1252, and they are frequency-based (not protocol-based). In other words, there's a 2.4GHz radio (handling 802.11a/b/n) and a 5GHz radio (handling 802.11a/n). Notice that 802.11n operates in both frequency ranges. So, to answer your question, the 3 antennas work together to handle all the protocols on one frequency.</P><P></P><P>I hope that helps! Please feel free to post any follow-up questions.</P><P></P><P>Jeff</P></BODY></HTML> Thu, 22 Jan 2009 16:51:41 GMT jeff.kish 2009-01-22T16:51:41Z how many 5.2 dbi omni antena at 2.4 GHz to use for 1250 series https://community.cisco.com/t5/wireless/how-many-5-2-dbi-omni-antena-at-2-4-ghz-to-use-for-1250-series/m-p/1149726#M186792 <P>I want to use wireless 1250 series LAP with wireless controller 2112 series.The A.P frequency will be 2.4 Ghz.</P><P></P><P>01.To support wireless n or b,g wirless clients how many antenae we must use ?</P><P>Suppose I use only one omni 5.2 dbi antena on each access points?</P><P></P><P>02.I see there are 3+3 connectors on 1252 series a.p for antenae. does this means that 3 connectors for 2.4 Ghz and another 3 connectors for antena for 5.8 GHz?</P><P></P><P>03.Does this mean that (suppose we want 2.4 Ghz ) then each antena (out of three) will support different different radio (radio a ,radio g,radio wireless n) ?</P><P></P><P>plz advice in details...considering me lame man</P> Sun, 04 Jul 2021 00:02:30 GMT https://community.cisco.com/t5/wireless/how-many-5-2-dbi-omni-antena-at-2-4-ghz-to-use-for-1250-series/m-p/1149726#M186792 contact_abdul 2021-07-04T00:02:30Z Re: how many 5.2 dbi omni antena at 2.4 GHz to use for 1250 seri https://community.cisco.com/t5/wireless/how-many-5-2-dbi-omni-antena-at-2-4-ghz-to-use-for-1250-series/m-p/1149727#M186793 <HTML><HEAD></HEAD><BODY><P>Hi Abdul! It's a bit confusing getting going on the 1252s, so hopefully this helps a bit.</P><P></P><P>1. You only need one antenna to support all the protocols (a/b/g/n). However, adding more antennas increases functionality. You're no doubt used to seeing two antennas per AP in standard 802.11a/b/g networks, and this helps to reduce multipath interference, thus improving the quality of the wireless transmissions/receptions. However, to take advantage of all the features that makes 802.11n so great, you will need three antennas.</P><P></P><P>2. Correct, 3 are for the 2.4GHz range, 3 are for the 5GHz range.</P><P></P><P>3. There are actually only two radios in the 1252, and they are frequency-based (not protocol-based). In other words, there's a 2.4GHz radio (handling 802.11a/b/n) and a 5GHz radio (handling 802.11a/n). Notice that 802.11n operates in both frequency ranges. So, to answer your question, the 3 antennas work together to handle all the protocols on one frequency.</P><P></P><P>I hope that helps! Please feel free to post any follow-up questions.</P><P></P><P>Jeff</P></BODY></HTML> Thu, 22 Jan 2009 16:51:41 GMT https://community.cisco.com/t5/wireless/how-many-5-2-dbi-omni-antena-at-2-4-ghz-to-use-for-1250-series/m-p/1149727#M186793 jeff.kish 2009-01-22T16:51:41Z Re: how many 5.2 dbi omni antena at 2.4 GHz to use for 1250 seri https://community.cisco.com/t5/wireless/how-many-5-2-dbi-omni-antena-at-2-4-ghz-to-use-for-1250-series/m-p/1149728#M186794 <HTML><HEAD></HEAD><BODY><P>hi jeff,</P><P>thnx alot.my concept clear now</P><P></P><P>thnx again.I am accessing net after many days.so replying late.</P><P></P><P>abdul</P></BODY></HTML> Mon, 26 Jan 2009 20:21:13 GMT https://community.cisco.com/t5/wireless/how-many-5-2-dbi-omni-antena-at-2-4-ghz-to-use-for-1250-series/m-p/1149728#M186794 contact_abdul 2009-01-26T20:21:13Z