Re: [WISPA] Power Lines in the LOS path
Would it be worth trying a Yagi antenna with a narrow beamwidth? Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr Pleasant Hill, MO 64080 (816) 305-1076 - Mobile (816) 497-0033 - Pager - Original Message - From: Zack Kneisley [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Friday, April 13, 2007 2:00 PM Subject: Re: [WISPA] Power Lines in the LOS path So just use OFDM EVERYWHERE!! :-) On 4/13/07, Marlon K. Schafer [EMAIL PROTECTED] wrote: Ahhh. I tried one or two of the sl units. Just ordered some more. I like them so far. Think of multipath like a bad echo. If you've even stood in a completely empty BIG room, like a grain elevator, warehouse etc. you know that it can be hard to carry on a conversation with someone. The sound waves just keep bouncing around and around and around. OFDM likes the echos, most anything else doesn't. thanks, marlon - Original Message - From: Jim Stout [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Friday, April 13, 2007 7:36 AM Subject: Re: [WISPA] Power Lines in the LOS path Thanks to all for the feedback! I moved the radio to the top of the customer's barn and am now looking over the power lines. When I first fired it up, it wouldn't associated, so I started trying some of the other suggestions. I lowered the maximum transmit power substantially and it actually started to work. Once it associated, I was able to see the dB level at the AP so I continued dropping the CPE power until my receive power at the AP was -70 dBm. I also reduced the MTU to 500 and the max speed to 5 Mbps. The customer hasn't used it much but my SNMP queries have all been succesful since 9:00 last night. Marlon, The SL2 is one of the newest radios from Tranzeo. It's part of the CPQ family, but it's a Slim Line (much smaller in size.) Up until this install, they have gone in easy, and run great! Can you explain the multipath phenomenon? Thanks, Jim Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr Pleasant Hill, MO 64080 (816) 305-1076 - Mobile (816) 497-0033 - Pager - Original Message - From: Marlon K. Schafer [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Wednesday, April 11, 2007 8:40 AM Subject: Re: [WISPA] Power Lines in the LOS path Yeah, that sounds like multipath. I've seen that a few times. Your signal level is actually much too high. Try two things to test my theory. Turn the antenna backward. That should cut 15 to 20dB of signal off and get you down into the high 60 to mid 70 rssi range. Much more reasonable. Try cross polarizing this cpe. If the tower is vertical, put the cpe hpol. Also, what's the radio? (sl2 isn't one I've heard of, cpq or cpe I know of) How about the AP? I've got some very strange things happening with SB ap's and Inscape Data or the new Tranzeo CPQ radios. They will just stop talking to each other. In fact the cpe won't even see the ap until the *ap* is rebooted! It's the dangdest thing. It's almost like the cpe is being put on a mac filter list and the ap completely ignores the cpe. No cpe mac filter being used though. I've had this happen on different networks with different towns, different upstreams, different antennas, different cpe etc. The old CPE200 units didn't do this. Just the new cpq and inscape data cpe radios. laters, marlon - Original Message - From: Jim Stout [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Wednesday, April 11, 2007 4:42 AM Subject: [WISPA] Power Lines in the LOS path I hate to ask this question, but I'm at my wit's end with this one. I recently installed a new customer (2.4 GHz) with a clear LOS to my tower. The distance is less than a mile and I get -56 dBm of signal strength. I've run a spectrum analyzer and it's dead silent when the radio's off.. All sounds great! A real simple install, but the radio intermittently locks up, fails to associate and most recently, simply fails to work for more then 10 - 30 seconds at a time following a POR. I've replaced radio (Tranzeo SL2) and gone to the latest version of firmware. I even contacted Tranzeo Tech Support and follwed their recommendations for timing settings. The only difference between this client and all the others on my tower is that there is a power line in the LOS path. Has anyone else found this to be a problem? It's almost like an invisible concrete wall is between the AP and the site. Thanks, Jim Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr Pleasant Hill, MO 64080 (816) 305-1076 - Mobile (816) 497-0033 - Pager -- WISPA Wireless List: [EMAIL PROTECTED] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: [EMAIL PROTECTED] Subscribe/Unsubscribe: http
Re: [WISPA] Power Lines in the LOS path
Has anyone tried the OFDM Tranzeo 900Mhz? What have your results been? Mario Jim Stout wrote: Would it be worth trying a Yagi antenna with a narrow beamwidth? Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr Pleasant Hill, MO 64080 (816) 305-1076 - Mobile (816) 497-0033 - Pager - Original Message - From: Zack Kneisley [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Friday, April 13, 2007 2:00 PM Subject: Re: [WISPA] Power Lines in the LOS path So just use OFDM EVERYWHERE!! :-) On 4/13/07, Marlon K. Schafer [EMAIL PROTECTED] wrote: Ahhh. I tried one or two of the sl units. Just ordered some more. I like them so far. Think of multipath like a bad echo. If you've even stood in a completely empty BIG room, like a grain elevator, warehouse etc. you know that it can be hard to carry on a conversation with someone. The sound waves just keep bouncing around and around and around. OFDM likes the echos, most anything else doesn't. thanks, marlon - Original Message - From: Jim Stout [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Friday, April 13, 2007 7:36 AM Subject: Re: [WISPA] Power Lines in the LOS path Thanks to all for the feedback! I moved the radio to the top of the customer's barn and am now looking over the power lines. When I first fired it up, it wouldn't associated, so I started trying some of the other suggestions. I lowered the maximum transmit power substantially and it actually started to work. Once it associated, I was able to see the dB level at the AP so I continued dropping the CPE power until my receive power at the AP was -70 dBm. I also reduced the MTU to 500 and the max speed to 5 Mbps. The customer hasn't used it much but my SNMP queries have all been succesful since 9:00 last night. Marlon, The SL2 is one of the newest radios from Tranzeo. It's part of the CPQ family, but it's a Slim Line (much smaller in size.) Up until this install, they have gone in easy, and run great! Can you explain the multipath phenomenon? Thanks, Jim Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr Pleasant Hill, MO 64080 (816) 305-1076 - Mobile (816) 497-0033 - Pager - Original Message - From: Marlon K. Schafer [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Wednesday, April 11, 2007 8:40 AM Subject: Re: [WISPA] Power Lines in the LOS path Yeah, that sounds like multipath. I've seen that a few times. Your signal level is actually much too high. Try two things to test my theory. Turn the antenna backward. That should cut 15 to 20dB of signal off and get you down into the high 60 to mid 70 rssi range. Much more reasonable. Try cross polarizing this cpe. If the tower is vertical, put the cpe hpol. Also, what's the radio? (sl2 isn't one I've heard of, cpq or cpe I know of) How about the AP? I've got some very strange things happening with SB ap's and Inscape Data or the new Tranzeo CPQ radios. They will just stop talking to each other. In fact the cpe won't even see the ap until the *ap* is rebooted! It's the dangdest thing. It's almost like the cpe is being put on a mac filter list and the ap completely ignores the cpe. No cpe mac filter being used though. I've had this happen on different networks with different towns, different upstreams, different antennas, different cpe etc. The old CPE200 units didn't do this. Just the new cpq and inscape data cpe radios. laters, marlon - Original Message - From: Jim Stout [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Wednesday, April 11, 2007 4:42 AM Subject: [WISPA] Power Lines in the LOS path I hate to ask this question, but I'm at my wit's end with this one. I recently installed a new customer (2.4 GHz) with a clear LOS to my tower. The distance is less than a mile and I get -56 dBm of signal strength. I've run a spectrum analyzer and it's dead silent when the radio's off.. All sounds great! A real simple install, but the radio intermittently locks up, fails to associate and most recently, simply fails to work for more then 10 - 30 seconds at a time following a POR. I've replaced radio (Tranzeo SL2) and gone to the latest version of firmware. I even contacted Tranzeo Tech Support and follwed their recommendations for timing settings. The only difference between this client and all the others on my tower is that there is a power line in the LOS path. Has anyone else found this to be a problem? It's almost like an invisible concrete wall is between the AP and the site. Thanks, Jim Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr Pleasant Hill, MO 64080 (816) 305-1076 - Mobile (816) 497-0033 - Pager -- WISPA Wireless List: [EMAIL PROTECTED] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org
Re: [WISPA] Power Lines in the LOS path
I've not had any luck with different antennas. I just move the system around will I find a spot that works well. marlon - Original Message - From: Jim Stout [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Saturday, April 14, 2007 9:46 AM Subject: Re: [WISPA] Power Lines in the LOS path Would it be worth trying a Yagi antenna with a narrow beamwidth? Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr Pleasant Hill, MO 64080 (816) 305-1076 - Mobile (816) 497-0033 - Pager - Original Message - From: Zack Kneisley [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Friday, April 13, 2007 2:00 PM Subject: Re: [WISPA] Power Lines in the LOS path So just use OFDM EVERYWHERE!! :-) On 4/13/07, Marlon K. Schafer [EMAIL PROTECTED] wrote: Ahhh. I tried one or two of the sl units. Just ordered some more. I like them so far. Think of multipath like a bad echo. If you've even stood in a completely empty BIG room, like a grain elevator, warehouse etc. you know that it can be hard to carry on a conversation with someone. The sound waves just keep bouncing around and around and around. OFDM likes the echos, most anything else doesn't. thanks, marlon - Original Message - From: Jim Stout [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Friday, April 13, 2007 7:36 AM Subject: Re: [WISPA] Power Lines in the LOS path Thanks to all for the feedback! I moved the radio to the top of the customer's barn and am now looking over the power lines. When I first fired it up, it wouldn't associated, so I started trying some of the other suggestions. I lowered the maximum transmit power substantially and it actually started to work. Once it associated, I was able to see the dB level at the AP so I continued dropping the CPE power until my receive power at the AP was -70 dBm. I also reduced the MTU to 500 and the max speed to 5 Mbps. The customer hasn't used it much but my SNMP queries have all been succesful since 9:00 last night. Marlon, The SL2 is one of the newest radios from Tranzeo. It's part of the CPQ family, but it's a Slim Line (much smaller in size.) Up until this install, they have gone in easy, and run great! Can you explain the multipath phenomenon? Thanks, Jim Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr Pleasant Hill, MO 64080 (816) 305-1076 - Mobile (816) 497-0033 - Pager - Original Message - From: Marlon K. Schafer [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Wednesday, April 11, 2007 8:40 AM Subject: Re: [WISPA] Power Lines in the LOS path Yeah, that sounds like multipath. I've seen that a few times. Your signal level is actually much too high. Try two things to test my theory. Turn the antenna backward. That should cut 15 to 20dB of signal off and get you down into the high 60 to mid 70 rssi range. Much more reasonable. Try cross polarizing this cpe. If the tower is vertical, put the cpe hpol. Also, what's the radio? (sl2 isn't one I've heard of, cpq or cpe I know of) How about the AP? I've got some very strange things happening with SB ap's and Inscape Data or the new Tranzeo CPQ radios. They will just stop talking to each other. In fact the cpe won't even see the ap until the *ap* is rebooted! It's the dangdest thing. It's almost like the cpe is being put on a mac filter list and the ap completely ignores the cpe. No cpe mac filter being used though. I've had this happen on different networks with different towns, different upstreams, different antennas, different cpe etc. The old CPE200 units didn't do this. Just the new cpq and inscape data cpe radios. laters, marlon - Original Message - From: Jim Stout [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Wednesday, April 11, 2007 4:42 AM Subject: [WISPA] Power Lines in the LOS path I hate to ask this question, but I'm at my wit's end with this one. I recently installed a new customer (2.4 GHz) with a clear LOS to my tower. The distance is less than a mile and I get -56 dBm of signal strength. I've run a spectrum analyzer and it's dead silent when the radio's off.. All sounds great! A real simple install, but the radio intermittently locks up, fails to associate and most recently, simply fails to work for more then 10 - 30 seconds at a time following a POR. I've replaced radio (Tranzeo SL2) and gone to the latest version of firmware. I even contacted Tranzeo Tech Support and follwed their recommendations for timing settings. The only difference between this client and all the others on my tower is that there is a power line in the LOS path. Has anyone else found this to be a problem? It's almost like an invisible concrete wall is between the AP and the site. Thanks, Jim Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr
Re: [WISPA] Power Lines in the LOS path
Thanks to all for the feedback! I moved the radio to the top of the customer's barn and am now looking over the power lines. When I first fired it up, it wouldn't associated, so I started trying some of the other suggestions. I lowered the maximum transmit power substantially and it actually started to work. Once it associated, I was able to see the dB level at the AP so I continued dropping the CPE power until my receive power at the AP was -70 dBm. I also reduced the MTU to 500 and the max speed to 5 Mbps. The customer hasn't used it much but my SNMP queries have all been succesful since 9:00 last night. Marlon, The SL2 is one of the newest radios from Tranzeo. It's part of the CPQ family, but it's a Slim Line (much smaller in size.) Up until this install, they have gone in easy, and run great! Can you explain the multipath phenomenon? Thanks, Jim Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr Pleasant Hill, MO 64080 (816) 305-1076 - Mobile (816) 497-0033 - Pager - Original Message - From: Marlon K. Schafer [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Wednesday, April 11, 2007 8:40 AM Subject: Re: [WISPA] Power Lines in the LOS path Yeah, that sounds like multipath. I've seen that a few times. Your signal level is actually much too high. Try two things to test my theory. Turn the antenna backward. That should cut 15 to 20dB of signal off and get you down into the high 60 to mid 70 rssi range. Much more reasonable. Try cross polarizing this cpe. If the tower is vertical, put the cpe hpol. Also, what's the radio? (sl2 isn't one I've heard of, cpq or cpe I know of) How about the AP? I've got some very strange things happening with SB ap's and Inscape Data or the new Tranzeo CPQ radios. They will just stop talking to each other. In fact the cpe won't even see the ap until the *ap* is rebooted! It's the dangdest thing. It's almost like the cpe is being put on a mac filter list and the ap completely ignores the cpe. No cpe mac filter being used though. I've had this happen on different networks with different towns, different upstreams, different antennas, different cpe etc. The old CPE200 units didn't do this. Just the new cpq and inscape data cpe radios. laters, marlon - Original Message - From: Jim Stout [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Wednesday, April 11, 2007 4:42 AM Subject: [WISPA] Power Lines in the LOS path I hate to ask this question, but I'm at my wit's end with this one. I recently installed a new customer (2.4 GHz) with a clear LOS to my tower. The distance is less than a mile and I get -56 dBm of signal strength. I've run a spectrum analyzer and it's dead silent when the radio's off.. All sounds great! A real simple install, but the radio intermittently locks up, fails to associate and most recently, simply fails to work for more then 10 - 30 seconds at a time following a POR. I've replaced radio (Tranzeo SL2) and gone to the latest version of firmware. I even contacted Tranzeo Tech Support and follwed their recommendations for timing settings. The only difference between this client and all the others on my tower is that there is a power line in the LOS path. Has anyone else found this to be a problem? It's almost like an invisible concrete wall is between the AP and the site. Thanks, Jim Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr Pleasant Hill, MO 64080 (816) 305-1076 - Mobile (816) 497-0033 - Pager -- WISPA Wireless List: [EMAIL PROTECTED] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: [EMAIL PROTECTED] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: [EMAIL PROTECTED] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Power Lines in the LOS path
Ahhh. I tried one or two of the sl units. Just ordered some more. I like them so far. Think of multipath like a bad echo. If you've even stood in a completely empty BIG room, like a grain elevator, warehouse etc. you know that it can be hard to carry on a conversation with someone. The sound waves just keep bouncing around and around and around. OFDM likes the echos, most anything else doesn't. thanks, marlon - Original Message - From: Jim Stout [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Friday, April 13, 2007 7:36 AM Subject: Re: [WISPA] Power Lines in the LOS path Thanks to all for the feedback! I moved the radio to the top of the customer's barn and am now looking over the power lines. When I first fired it up, it wouldn't associated, so I started trying some of the other suggestions. I lowered the maximum transmit power substantially and it actually started to work. Once it associated, I was able to see the dB level at the AP so I continued dropping the CPE power until my receive power at the AP was -70 dBm. I also reduced the MTU to 500 and the max speed to 5 Mbps. The customer hasn't used it much but my SNMP queries have all been succesful since 9:00 last night. Marlon, The SL2 is one of the newest radios from Tranzeo. It's part of the CPQ family, but it's a Slim Line (much smaller in size.) Up until this install, they have gone in easy, and run great! Can you explain the multipath phenomenon? Thanks, Jim Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr Pleasant Hill, MO 64080 (816) 305-1076 - Mobile (816) 497-0033 - Pager - Original Message - From: Marlon K. Schafer [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Wednesday, April 11, 2007 8:40 AM Subject: Re: [WISPA] Power Lines in the LOS path Yeah, that sounds like multipath. I've seen that a few times. Your signal level is actually much too high. Try two things to test my theory. Turn the antenna backward. That should cut 15 to 20dB of signal off and get you down into the high 60 to mid 70 rssi range. Much more reasonable. Try cross polarizing this cpe. If the tower is vertical, put the cpe hpol. Also, what's the radio? (sl2 isn't one I've heard of, cpq or cpe I know of) How about the AP? I've got some very strange things happening with SB ap's and Inscape Data or the new Tranzeo CPQ radios. They will just stop talking to each other. In fact the cpe won't even see the ap until the *ap* is rebooted! It's the dangdest thing. It's almost like the cpe is being put on a mac filter list and the ap completely ignores the cpe. No cpe mac filter being used though. I've had this happen on different networks with different towns, different upstreams, different antennas, different cpe etc. The old CPE200 units didn't do this. Just the new cpq and inscape data cpe radios. laters, marlon - Original Message - From: Jim Stout [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Wednesday, April 11, 2007 4:42 AM Subject: [WISPA] Power Lines in the LOS path I hate to ask this question, but I'm at my wit's end with this one. I recently installed a new customer (2.4 GHz) with a clear LOS to my tower. The distance is less than a mile and I get -56 dBm of signal strength. I've run a spectrum analyzer and it's dead silent when the radio's off.. All sounds great! A real simple install, but the radio intermittently locks up, fails to associate and most recently, simply fails to work for more then 10 - 30 seconds at a time following a POR. I've replaced radio (Tranzeo SL2) and gone to the latest version of firmware. I even contacted Tranzeo Tech Support and follwed their recommendations for timing settings. The only difference between this client and all the others on my tower is that there is a power line in the LOS path. Has anyone else found this to be a problem? It's almost like an invisible concrete wall is between the AP and the site. Thanks, Jim Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr Pleasant Hill, MO 64080 (816) 305-1076 - Mobile (816) 497-0033 - Pager -- WISPA Wireless List: [EMAIL PROTECTED] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: [EMAIL PROTECTED] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: [EMAIL PROTECTED] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: [EMAIL PROTECTED] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Power Lines in the LOS path
So just use OFDM EVERYWHERE!! :-) On 4/13/07, Marlon K. Schafer [EMAIL PROTECTED] wrote: Ahhh. I tried one or two of the sl units. Just ordered some more. I like them so far. Think of multipath like a bad echo. If you've even stood in a completely empty BIG room, like a grain elevator, warehouse etc. you know that it can be hard to carry on a conversation with someone. The sound waves just keep bouncing around and around and around. OFDM likes the echos, most anything else doesn't. thanks, marlon - Original Message - From: Jim Stout [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Friday, April 13, 2007 7:36 AM Subject: Re: [WISPA] Power Lines in the LOS path Thanks to all for the feedback! I moved the radio to the top of the customer's barn and am now looking over the power lines. When I first fired it up, it wouldn't associated, so I started trying some of the other suggestions. I lowered the maximum transmit power substantially and it actually started to work. Once it associated, I was able to see the dB level at the AP so I continued dropping the CPE power until my receive power at the AP was -70 dBm. I also reduced the MTU to 500 and the max speed to 5 Mbps. The customer hasn't used it much but my SNMP queries have all been succesful since 9:00 last night. Marlon, The SL2 is one of the newest radios from Tranzeo. It's part of the CPQ family, but it's a Slim Line (much smaller in size.) Up until this install, they have gone in easy, and run great! Can you explain the multipath phenomenon? Thanks, Jim Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr Pleasant Hill, MO 64080 (816) 305-1076 - Mobile (816) 497-0033 - Pager - Original Message - From: Marlon K. Schafer [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Wednesday, April 11, 2007 8:40 AM Subject: Re: [WISPA] Power Lines in the LOS path Yeah, that sounds like multipath. I've seen that a few times. Your signal level is actually much too high. Try two things to test my theory. Turn the antenna backward. That should cut 15 to 20dB of signal off and get you down into the high 60 to mid 70 rssi range. Much more reasonable. Try cross polarizing this cpe. If the tower is vertical, put the cpe hpol. Also, what's the radio? (sl2 isn't one I've heard of, cpq or cpe I know of) How about the AP? I've got some very strange things happening with SB ap's and Inscape Data or the new Tranzeo CPQ radios. They will just stop talking to each other. In fact the cpe won't even see the ap until the *ap* is rebooted! It's the dangdest thing. It's almost like the cpe is being put on a mac filter list and the ap completely ignores the cpe. No cpe mac filter being used though. I've had this happen on different networks with different towns, different upstreams, different antennas, different cpe etc. The old CPE200 units didn't do this. Just the new cpq and inscape data cpe radios. laters, marlon - Original Message - From: Jim Stout [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Wednesday, April 11, 2007 4:42 AM Subject: [WISPA] Power Lines in the LOS path I hate to ask this question, but I'm at my wit's end with this one. I recently installed a new customer (2.4 GHz) with a clear LOS to my tower. The distance is less than a mile and I get -56 dBm of signal strength. I've run a spectrum analyzer and it's dead silent when the radio's off.. All sounds great! A real simple install, but the radio intermittently locks up, fails to associate and most recently, simply fails to work for more then 10 - 30 seconds at a time following a POR. I've replaced radio (Tranzeo SL2) and gone to the latest version of firmware. I even contacted Tranzeo Tech Support and follwed their recommendations for timing settings. The only difference between this client and all the others on my tower is that there is a power line in the LOS path. Has anyone else found this to be a problem? It's almost like an invisible concrete wall is between the AP and the site. Thanks, Jim Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr Pleasant Hill, MO 64080 (816) 305-1076 - Mobile (816) 497-0033 - Pager -- WISPA Wireless List: [EMAIL PROTECTED] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: [EMAIL PROTECTED] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: [EMAIL PROTECTED] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: [EMAIL PROTECTED] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless
Re: [WISPA] Power Lines in the LOS path
LOL If only it didn't realistically need a -50somthing rssi! hehehehe marlon - Original Message - From: Zack Kneisley [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Friday, April 13, 2007 12:00 PM Subject: Re: [WISPA] Power Lines in the LOS path So just use OFDM EVERYWHERE!! :-) On 4/13/07, Marlon K. Schafer [EMAIL PROTECTED] wrote: Ahhh. I tried one or two of the sl units. Just ordered some more. I like them so far. Think of multipath like a bad echo. If you've even stood in a completely empty BIG room, like a grain elevator, warehouse etc. you know that it can be hard to carry on a conversation with someone. The sound waves just keep bouncing around and around and around. OFDM likes the echos, most anything else doesn't. thanks, marlon - Original Message - From: Jim Stout [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Friday, April 13, 2007 7:36 AM Subject: Re: [WISPA] Power Lines in the LOS path Thanks to all for the feedback! I moved the radio to the top of the customer's barn and am now looking over the power lines. When I first fired it up, it wouldn't associated, so I started trying some of the other suggestions. I lowered the maximum transmit power substantially and it actually started to work. Once it associated, I was able to see the dB level at the AP so I continued dropping the CPE power until my receive power at the AP was -70 dBm. I also reduced the MTU to 500 and the max speed to 5 Mbps. The customer hasn't used it much but my SNMP queries have all been succesful since 9:00 last night. Marlon, The SL2 is one of the newest radios from Tranzeo. It's part of the CPQ family, but it's a Slim Line (much smaller in size.) Up until this install, they have gone in easy, and run great! Can you explain the multipath phenomenon? Thanks, Jim Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr Pleasant Hill, MO 64080 (816) 305-1076 - Mobile (816) 497-0033 - Pager - Original Message - From: Marlon K. Schafer [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Wednesday, April 11, 2007 8:40 AM Subject: Re: [WISPA] Power Lines in the LOS path Yeah, that sounds like multipath. I've seen that a few times. Your signal level is actually much too high. Try two things to test my theory. Turn the antenna backward. That should cut 15 to 20dB of signal off and get you down into the high 60 to mid 70 rssi range. Much more reasonable. Try cross polarizing this cpe. If the tower is vertical, put the cpe hpol. Also, what's the radio? (sl2 isn't one I've heard of, cpq or cpe I know of) How about the AP? I've got some very strange things happening with SB ap's and Inscape Data or the new Tranzeo CPQ radios. They will just stop talking to each other. In fact the cpe won't even see the ap until the *ap* is rebooted! It's the dangdest thing. It's almost like the cpe is being put on a mac filter list and the ap completely ignores the cpe. No cpe mac filter being used though. I've had this happen on different networks with different towns, different upstreams, different antennas, different cpe etc. The old CPE200 units didn't do this. Just the new cpq and inscape data cpe radios. laters, marlon - Original Message - From: Jim Stout [EMAIL PROTECTED] To: WISPA General List [EMAIL PROTECTED] Sent: Wednesday, April 11, 2007 4:42 AM Subject: [WISPA] Power Lines in the LOS path I hate to ask this question, but I'm at my wit's end with this one. I recently installed a new customer (2.4 GHz) with a clear LOS to my tower. The distance is less than a mile and I get -56 dBm of signal strength. I've run a spectrum analyzer and it's dead silent when the radio's off.. All sounds great! A real simple install, but the radio intermittently locks up, fails to associate and most recently, simply fails to work for more then 10 - 30 seconds at a time following a POR. I've replaced radio (Tranzeo SL2) and gone to the latest version of firmware. I even contacted Tranzeo Tech Support and follwed their recommendations for timing settings. The only difference between this client and all the others on my tower is that there is a power line in the LOS path. Has anyone else found this to be a problem? It's almost like an invisible concrete wall is between the AP and the site. Thanks, Jim Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr Pleasant Hill, MO 64080 (816) 305-1076 - Mobile (816) 497-0033 - Pager -- WISPA Wireless List: [EMAIL PROTECTED] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: [EMAIL PROTECTED] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List
Re: [WISPA] Power Lines in the LOS path
Jim, I have run into very similar situations, where high power lines, were the only explanation as to the interference. I was able to work around it in some situations by adjusting the customer antenna to shoot under the powerlines, however, this is not always possible, nor is it always the fix. In most of these cases, we were able to get data through, but not at the speed that it should have been, so we would end up selling the customer a lower speed package. I have been unable to find much information about this, but would be greatly interested in hearing what others have done, if they have run into it at all. Jaron Parsons Sumner Communications Jim Stout wrote: I hate to ask this question, but I'm at my wit's end with this one. I recently installed a new customer (2.4 GHz) with a clear LOS to my tower. The distance is less than a mile and I get -56 dBm of signal strength. I've run a spectrum analyzer and it's dead silent when the radio's off.. All sounds great! A real simple install, but the radio intermittently locks up, fails to associate and most recently, simply fails to work for more then 10 - 30 seconds at a time following a POR. I've replaced radio (Tranzeo SL2) and gone to the latest version of firmware. I even contacted Tranzeo Tech Support and follwed their recommendations for timing settings. The only difference between this client and all the others on my tower is that there is a power line in the LOS path. Has anyone else found this to be a problem? It's almost like an invisible concrete wall is between the AP and the site. Thanks, Jim Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr Pleasant Hill, MO 64080 (816) 305-1076 - Mobile (816) 497-0033 - Pager -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Power Lines in the LOS path
Yeah, that sounds like multipath. I've seen that a few times. Your signal level is actually much too high. Try two things to test my theory. Turn the antenna backward. That should cut 15 to 20dB of signal off and get you down into the high 60 to mid 70 rssi range. Much more reasonable. Try cross polarizing this cpe. If the tower is vertical, put the cpe hpol. Also, what's the radio? (sl2 isn't one I've heard of, cpq or cpe I know of) How about the AP? I've got some very strange things happening with SB ap's and Inscape Data or the new Tranzeo CPQ radios. They will just stop talking to each other. In fact the cpe won't even see the ap until the *ap* is rebooted! It's the dangdest thing. It's almost like the cpe is being put on a mac filter list and the ap completely ignores the cpe. No cpe mac filter being used though. I've had this happen on different networks with different towns, different upstreams, different antennas, different cpe etc. The old CPE200 units didn't do this. Just the new cpq and inscape data cpe radios. laters, marlon - Original Message - From: Jim Stout [EMAIL PROTECTED] To: WISPA General List wireless@wispa.org Sent: Wednesday, April 11, 2007 4:42 AM Subject: [WISPA] Power Lines in the LOS path I hate to ask this question, but I'm at my wit's end with this one. I recently installed a new customer (2.4 GHz) with a clear LOS to my tower. The distance is less than a mile and I get -56 dBm of signal strength. I've run a spectrum analyzer and it's dead silent when the radio's off.. All sounds great! A real simple install, but the radio intermittently locks up, fails to associate and most recently, simply fails to work for more then 10 - 30 seconds at a time following a POR. I've replaced radio (Tranzeo SL2) and gone to the latest version of firmware. I even contacted Tranzeo Tech Support and follwed their recommendations for timing settings. The only difference between this client and all the others on my tower is that there is a power line in the LOS path. Has anyone else found this to be a problem? It's almost like an invisible concrete wall is between the AP and the site. Thanks, Jim Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr Pleasant Hill, MO 64080 (816) 305-1076 - Mobile (816) 497-0033 - Pager -- 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] Power Lines in the LOS path
I've also had some luck in moving the antennas. Should have mentioned that before. I had one customer get 3 or 4 x the speeds just by moving his antenna UP by 2'. Had another one double the speeds by moving it DOWN 4'. marlon - Original Message - From: Jaron Parsons [EMAIL PROTECTED] To: WISPA General List wireless@wispa.org Sent: Wednesday, April 11, 2007 5:49 AM Subject: Re: [WISPA] Power Lines in the LOS path Jim, I have run into very similar situations, where high power lines, were the only explanation as to the interference. I was able to work around it in some situations by adjusting the customer antenna to shoot under the powerlines, however, this is not always possible, nor is it always the fix. In most of these cases, we were able to get data through, but not at the speed that it should have been, so we would end up selling the customer a lower speed package. I have been unable to find much information about this, but would be greatly interested in hearing what others have done, if they have run into it at all. Jaron Parsons Sumner Communications Jim Stout wrote: I hate to ask this question, but I'm at my wit's end with this one. I recently installed a new customer (2.4 GHz) with a clear LOS to my tower. The distance is less than a mile and I get -56 dBm of signal strength. I've run a spectrum analyzer and it's dead silent when the radio's off.. All sounds great! A real simple install, but the radio intermittently locks up, fails to associate and most recently, simply fails to work for more then 10 - 30 seconds at a time following a POR. I've replaced radio (Tranzeo SL2) and gone to the latest version of firmware. I even contacted Tranzeo Tech Support and follwed their recommendations for timing settings. The only difference between this client and all the others on my tower is that there is a power line in the LOS path. Has anyone else found this to be a problem? It's almost like an invisible concrete wall is between the AP and the site. Thanks, Jim Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr Pleasant Hill, MO 64080 (816) 305-1076 - Mobile (816) 497-0033 - Pager -- 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] Power Lines in the LOS path
Agreed there. I moved a unit from one end of a house (clear path, but power lines) to the other end, and lower (under the power lines) and seen a dramatic increase even though the signal level was similar in both places. - Original Message - From: Marlon K. Schafer [EMAIL PROTECTED] To: WISPA General List wireless@wispa.org Sent: Wednesday, April 11, 2007 9:48 AM Subject: Re: [WISPA] Power Lines in the LOS path I've also had some luck in moving the antennas. Should have mentioned that before. I had one customer get 3 or 4 x the speeds just by moving his antenna UP by 2'. Had another one double the speeds by moving it DOWN 4'. marlon - Original Message - From: Jaron Parsons [EMAIL PROTECTED] To: WISPA General List wireless@wispa.org Sent: Wednesday, April 11, 2007 5:49 AM Subject: Re: [WISPA] Power Lines in the LOS path Jim, I have run into very similar situations, where high power lines, were the only explanation as to the interference. I was able to work around it in some situations by adjusting the customer antenna to shoot under the powerlines, however, this is not always possible, nor is it always the fix. In most of these cases, we were able to get data through, but not at the speed that it should have been, so we would end up selling the customer a lower speed package. I have been unable to find much information about this, but would be greatly interested in hearing what others have done, if they have run into it at all. Jaron Parsons Sumner Communications Jim Stout wrote: I hate to ask this question, but I'm at my wit's end with this one. I recently installed a new customer (2.4 GHz) with a clear LOS to my tower. The distance is less than a mile and I get -56 dBm of signal strength. I've run a spectrum analyzer and it's dead silent when the radio's off.. All sounds great! A real simple install, but the radio intermittently locks up, fails to associate and most recently, simply fails to work for more then 10 - 30 seconds at a time following a POR. I've replaced radio (Tranzeo SL2) and gone to the latest version of firmware. I even contacted Tranzeo Tech Support and follwed their recommendations for timing settings. The only difference between this client and all the others on my tower is that there is a power line in the LOS path. Has anyone else found this to be a problem? It's almost like an invisible concrete wall is between the AP and the site. Thanks, Jim Jim Stout LTO Communications, LLC 15701 Henry Andrews Dr Pleasant Hill, MO 64080 (816) 305-1076 - Mobile (816) 497-0033 - Pager -- 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/ -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.446 / Virus Database: 269.2.0/756 - Release Date: 4/10/2007 10:44 PM -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
