Re: [WISPA] Working With Others
Yes... we have the same exact meter systems in two or three of our cities. We have to use channel 1 or 4 on Trango (906mhz, 924mhz) and horizontal polarity to stay out of their way. They were very easy to deal with, and actually purchased a horizontal omni for us to fix one of the cities. Travis Microserv Eric Rogers wrote: Ok, I knew the day would come...I got a phone call the other day that I knocked out 350 Automatic Meter Readers because they are within the same frequency range I am using. They are 917.50 MHz, and I am using Motorola Canopy centered on 920. Now, here are my issues. I have two other ones located nearby that are using 906, so I don't want to walk over myself. SCADA is in the middle band, so I need the upper channel...but there is paging that bleeds down to 924 MHz. I am as high up as I can be. Oh, I am horizontal and they are vertical. Now, they are almost unwilling to change the frequency they are running on, (right now)...It seems like they are willing to look at it, but basically their comments are things like We haven't had anyone that wasn't willing to work with us and It has been working for 10 years type thing... He did say the only company that wasn't willing to work with them was a major hospital and they eventually upgraded their phone system and it is no longer a problem. To me this sounds like THEY are the unwilling ones to change. I was here first mentality...not how can we work together. Why would a meter reading company that reads 1/2 million meters use UL frequency? Has anyone run into this? -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Working With Others
This is a good one Eric. FIRST and FOREMOST, they were there first, you need to find a way to change things.. FCC wise they have no leg to stand on. But as good citizens and a good American, you need to do the honorable thing and design your new system around any existing ones. I think you could move up if you used some band pass filters on your system. You might also want to ask them how old their meter reading systems are. Maybe they need to upgrade. Better yet, ask them if they are willing to work with you. You could help them upgrade to a system that they don't have to fiddle with. How about an ethernet capable meter base that they can read from. They just pay you for the hook up and a small monthly fee, you take care of the network. AND you can service the local house with internet! Anyway, I always work around existing operators in my area when I light up a new tower. In fact our tower agreements clearly state that we'll not cause interference to ANYONE in the area. But once we are there we also have the same protection. And I've set a good precedent for any operators in my areas. laters, Marlon (509) 982-2181 (408) 907-6910 (Vonage)Consulting services 42846865 (icq)WISP Operator since 1999! [EMAIL PROTECTED] www.odessaoffice.com/wireless www.odessaoffice.com/marlon/cam - Original Message - From: Eric Rogers [EMAIL PROTECTED] To: WISPA General List wireless@wispa.org Sent: Tuesday, March 20, 2007 5:39 AM Subject: [WISPA] Working With Others Ok, I knew the day would come...I got a phone call the other day that I knocked out 350 Automatic Meter Readers because they are within the same frequency range I am using. They are 917.50 MHz, and I am using Motorola Canopy centered on 920. Now, here are my issues. I have two other ones located nearby that are using 906, so I don't want to walk over myself. SCADA is in the middle band, so I need the upper channel...but there is paging that bleeds down to 924 MHz. I am as high up as I can be. Oh, I am horizontal and they are vertical. Now, they are almost unwilling to change the frequency they are running on, (right now)...It seems like they are willing to look at it, but basically their comments are things like We haven't had anyone that wasn't willing to work with us and It has been working for 10 years type thing... He did say the only company that wasn't willing to work with them was a major hospital and they eventually upgraded their phone system and it is no longer a problem. To me this sounds like THEY are the unwilling ones to change. I was here first mentality...not how can we work together. Why would a meter reading company that reads 1/2 million meters use UL frequency? Has anyone run into this? -- 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] Working With Others
Thanks Marlon, I also agree that since I am the newbie in the area, I need to be willing to be flexible. But, what options do I have when my channels are 8MHz wide and they are in the upper end of my channel 2 and channel 3 is unusable by paging? I can move my center channel 1 MHz at a time, so it does give me some flexibility in that regard. First, I did do some brief spectrum analysis over several days from my radios BEFORE I deployed and I didn't see anyone in that range. The reasons I didn't are because I am horizontal and they are vertical and they are only pushing 1/4 watt. Their base station is only 25ft on a pole with the 1 or 2 db omnis pointing down and the meters have no external antennas and I am 180' almost 30 ft elevation higher. Based on all I have learned using 900 MHz, I know it has major multi-pathing problems if both ends are below the tree-line. Needless to say, I think there are additional things they need to take into account along with channel (RF) coordination. I am willing to give them space on my tower to get them up off the ground. I think it is going to come down to...I am the new guy and I need to move. He did mention he has some sort of DSSS meters that are newer that he may consider upgrading to. I really want to co-exist, and I do feel like I am the bully. I have considered a notch or band-pass filter for the paging to allow me to go up further in the RF. I am worried that I will need to do this at the CPE as well. If I change my other two locations from the lower band to the upper band, they are closer to the paging tower so the upper band is out of the question. If I use 915 (channel 2 for Motorola) then I may take down the East end of my town doing the same thing. I would love to somehow interface their AMR to my internet connection and provide the feed to the customer and the meter. Thanks, Eric -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Marlon K. Schafer (509) 982-2181 Sent: Tuesday, March 20, 2007 12:17 PM To: WISPA General List Subject: Re: [WISPA] Working With Others This is a good one Eric. FIRST and FOREMOST, they were there first, you need to find a way to change things.. FCC wise they have no leg to stand on. But as good citizens and a good American, you need to do the honorable thing and design your new system around any existing ones. I think you could move up if you used some band pass filters on your system. You might also want to ask them how old their meter reading systems are. Maybe they need to upgrade. Better yet, ask them if they are willing to work with you. You could help them upgrade to a system that they don't have to fiddle with. How about an ethernet capable meter base that they can read from. They just pay you for the hook up and a small monthly fee, you take care of the network. AND you can service the local house with internet! Anyway, I always work around existing operators in my area when I light up a new tower. In fact our tower agreements clearly state that we'll not cause interference to ANYONE in the area. But once we are there we also have the same protection. And I've set a good precedent for any operators in my areas. laters, Marlon (509) 982-2181 (408) 907-6910 (Vonage)Consulting services 42846865 (icq)WISP Operator since 1999! [EMAIL PROTECTED] www.odessaoffice.com/wireless www.odessaoffice.com/marlon/cam - Original Message - From: Eric Rogers [EMAIL PROTECTED] To: WISPA General List wireless@wispa.org Sent: Tuesday, March 20, 2007 5:39 AM Subject: [WISPA] Working With Others Ok, I knew the day would come...I got a phone call the other day that I knocked out 350 Automatic Meter Readers because they are within the same frequency range I am using. They are 917.50 MHz, and I am using Motorola Canopy centered on 920. Now, here are my issues. I have two other ones located nearby that are using 906, so I don't want to walk over myself. SCADA is in the middle band, so I need the upper channel...but there is paging that bleeds down to 924 MHz. I am as high up as I can be. Oh, I am horizontal and they are vertical. Now, they are almost unwilling to change the frequency they are running on, (right now)...It seems like they are willing to look at it, but basically their comments are things like We haven't had anyone that wasn't willing to work with us and It has been working for 10 years type thing... He did say the only company that wasn't willing to work with them was a major hospital and they eventually upgraded their phone system and it is no longer a problem. To me this sounds like THEY are the unwilling ones to change. I was here first mentality...not how can we work together. Why would a meter reading company that reads 1/2 million meters use UL frequency? Has anyone run into this? -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe
