[AFMUG] Downtilt tool
We have upgraded a bunch of towers to ePMP (2.4) are finding we are going to really be more exacting with our downtilts to avoid spectrum overlap... more than we did with 100 series, because of the SNR requirements. I assume 2.4 450 would have similar requirements. So, I want to map out my down-tilt plans . Is there a good online tool for this? Paul McCall, Pres. PDMNet / Florida Broadband 658 Old Dixie Highway Vero Beach, FL 32962 772-564-6800 office 772-473-0352 cell www.pdmnet.comhttp://www.pdmnet.com/ pa...@pdmnet.netmailto:pa...@pdmnet.net
Re: [AFMUG] Downtilt tool
Trig? Tangent? How far out do you want to focus the main lobe? Take the tower height, divided by that distance (both in the same units) and do the arctan of that. So if the tower was 200 feet, and you want to target a spot 2 miles away, arctan(200/10560)=1 degree From: Paul McCall via Af Sent: Tuesday, October 14, 2014 8:13 AM To: af@afmug.com Subject: [AFMUG] Downtilt tool We have upgraded a bunch of towers to ePMP (2.4) are finding we are going to really be more exacting with our downtilts to avoid spectrum overlap… more than we did with 100 series, because of the SNR requirements. I assume 2.4 450 would have similar requirements. So, I want to map out my down-tilt plans . Is there a good online tool for this? Paul McCall, Pres. PDMNet / Florida Broadband 658 Old Dixie Highway Vero Beach, FL 32962 772-564-6800 office 772-473-0352 cell www.pdmnet.com pa...@pdmnet.net
Re: [AFMUG] Downtilt tool
That's the method I've generally used. You can further calculate based on the vertical beamwidth where the outer edge of the -3db coverage circle would land, and where the inner edge would land. Then you can attempt to visualize it. I feel like somebody once linked to an online map tool that would show you a simple visualization of where your sector would cover. I can't think of who or when now. Trig? Tangent? How far out do you want to focus the main lobe? Take the tower height, divided by that distance (both in the same units) and do the arctan of that. So if the tower was 200 feet, and you want to target a spot 2 miles away, arctan(200/10560)=1 degree *From:* Paul McCall via Af mailto:af@afmug.com *Sent:* Tuesday, October 14, 2014 8:13 AM *To:* af@afmug.com mailto:af@afmug.com *Subject:* [AFMUG] Downtilt tool We have upgraded a bunch of towers to ePMP (2.4) are finding we are going to really be more exacting with our downtilts to avoid spectrum overlap… more than we did with 100 series, because of the SNR requirements. I assume 2.4 450 would have similar requirements. So, I want to map out my down-tilt plans . Is there a good online tool for this? Paul McCall, Pres. PDMNet / Florida Broadband 658 Old Dixie Highway Vero Beach, FL 32962 772-564-6800 office 772-473-0352 cell www.pdmnet.com http://www.pdmnet.com/ pa...@pdmnet.net mailto:pa...@pdmnet.net
Re: [AFMUG] Downtilt tool
arctan sounds like a villain from he-ma On Tue, Oct 14, 2014 at 10:00 AM, Chuck McCown via Af af@afmug.com wrote: Trig? Tangent? How far out do you want to focus the main lobe? Take the tower height, divided by that distance (both in the same units) and do the arctan of that. So if the tower was 200 feet, and you want to target a spot 2 miles away, arctan(200/10560)=1 degree *From:* Paul McCall via Af af@afmug.com *Sent:* Tuesday, October 14, 2014 8:13 AM *To:* af@afmug.com *Subject:* [AFMUG] Downtilt tool We have upgraded a bunch of towers to ePMP (2.4) are finding we are going to really be more exacting with our downtilts to avoid spectrum overlap… more than we did with 100 series, because of the SNR requirements. I assume 2.4 450 would have similar requirements. So, I want to map out my down-tilt plans . Is there a good online tool for this? Paul McCall, Pres. PDMNet / Florida Broadband 658 Old Dixie Highway Vero Beach, FL 32962 772-564-6800 office 772-473-0352 cell www.pdmnet.com pa...@pdmnet.net -- All parts should go together without forcing. You must remember that the parts you are reassembling were disassembled by you. Therefore, if you can't get them together again, there must be a reason. By all means, do not use a hammer. -- IBM maintenance manual, 1925
Re: [AFMUG] Downtilt tool
Adam, That’s what I was thinking also. That would be handy From: Af [mailto:af-boun...@afmug.com] On Behalf Of Adam Moffett via Af Sent: Tuesday, October 14, 2014 11:20 AM To: af@afmug.com Subject: Re: [AFMUG] Downtilt tool That's the method I've generally used. You can further calculate based on the vertical beamwidth where the outer edge of the -3db coverage circle would land, and where the inner edge would land. Then you can attempt to visualize it. I feel like somebody once linked to an online map tool that would show you a simple visualization of where your sector would cover. I can't think of who or when now. Trig? Tangent? How far out do you want to focus the main lobe? Take the tower height, divided by that distance (both in the same units) and do the arctan of that. So if the tower was 200 feet, and you want to target a spot 2 miles away, arctan(200/10560)=1 degree From: Paul McCall via Afmailto:af@afmug.com Sent: Tuesday, October 14, 2014 8:13 AM To: af@afmug.commailto:af@afmug.com Subject: [AFMUG] Downtilt tool We have upgraded a bunch of towers to ePMP (2.4) are finding we are going to really be more exacting with our downtilts to avoid spectrum overlap… more than we did with 100 series, because of the SNR requirements. I assume 2.4 450 would have similar requirements. So, I want to map out my down-tilt plans . Is there a good online tool for this? Paul McCall, Pres. PDMNet / Florida Broadband 658 Old Dixie Highway Vero Beach, FL 32962 772-564-6800 office 772-473-0352 cell www.pdmnet.comhttp://www.pdmnet.com/ pa...@pdmnet.netmailto:pa...@pdmnet.net
Re: [AFMUG] Downtilt tool
Teletronics had a cool utility for this Jaime Solorza On Oct 14, 2014 9:22 AM, Paul McCall via Af af@afmug.com wrote: Adam, That’s what I was thinking also. That would be handy *From:* Af [mailto:af-boun...@afmug.com] *On Behalf Of *Adam Moffett via Af *Sent:* Tuesday, October 14, 2014 11:20 AM *To:* af@afmug.com *Subject:* Re: [AFMUG] Downtilt tool That's the method I've generally used. You can further calculate based on the vertical beamwidth where the outer edge of the -3db coverage circle would land, and where the inner edge would land. Then you can attempt to visualize it. I feel like somebody once linked to an online map tool that would show you a simple visualization of where your sector would cover. I can't think of who or when now. Trig? Tangent? How far out do you want to focus the main lobe? Take the tower height, divided by that distance (both in the same units) and do the arctan of that. So if the tower was 200 feet, and you want to target a spot 2 miles away, arctan(200/10560)=1 degree *From:* Paul McCall via Af af@afmug.com *Sent:* Tuesday, October 14, 2014 8:13 AM *To:* af@afmug.com *Subject:* [AFMUG] Downtilt tool We have upgraded a bunch of towers to ePMP (2.4) are finding we are going to really be more exacting with our downtilts to avoid spectrum overlap… more than we did with 100 series, because of the SNR requirements. I assume 2.4 450 would have similar requirements. So, I want to map out my down-tilt plans . Is there a good online tool for this? Paul McCall, Pres. PDMNet / Florida Broadband 658 Old Dixie Highway Vero Beach, FL 32962 772-564-6800 office 772-473-0352 cell www.pdmnet.com pa...@pdmnet.net
