HomeMy WebLinkAbout2900 S COLLEGE AVE AT & T - FDP190015 - SUBMITTAL DOCUMENTS - ROUND 1 - WTE / WTF INFORMATION (3)Subject: RE: College & Drake COL03242 FA#14390423 Planner Needs
From: "DELACRUZ, JULIUS" <jd235u@a�.com>
Date: 5/13/2019, 11:50 AM
To: John Marrio� <jmarrio�@velocitel.com>, "LAI, WINNIE" <wl425p@a�.com>
CC: "BERNARD, GLENN" <gb240k@a�.com>, Kenneth Greenwood <kgreenwood@velocitel.com>
John,
Please find below the physics behind RAN’s proposed antenna loca�on and top of antenna heights.
Given:
Proposed Antenna Model: CCI TPA-45R-KU8AA-K (98.7x15.4x8.2) with Ver�cal Beamwidth=17.8 degrees for 700 band.
Distance of the antennas from the parapet corner: 16.17 feet
In order for the LTE 700 signal to propagate effec�vely from the roo�op without being shadowed by the parapet wall, the bo�om �p of the
antenna would need to be at least 8.1 feet from the roo�op. Since, we’re using 8-foot antenna for maximum antenna gain (best indoor signal
penetra�on compared to shorter antennas), the top of the antenna height should be 8.1 � + 8.225 � = 16.325 � from the roo�op based from
the Roo�op Clearance calcula�ons shown below.
The top of antenna height from the roo�op based on our current design is at 14.33 � which is already 2 feet less than what it should be based
on our calcula�ons.
Now, If we have to move the antennas away from the parapet corner, then the top of antenna height would have to be increased accordingly.
RE: College & Drake COL03242 FA#14390423 Planner Needs
1 of 4 6/11/2019, 1:00 PM
Let’s say, we move the antenna 10 � more away from the parapet corner (26.17 � distance from the antennas to the parapet wall), then the
top of antenna height would be increased to 12.8 � + 8.225 � = 21 � from the roo�op based on the calcula�ons:
Hope this explana�on helps.
Regards,
Julius Delacruz
RMR RAN Design
From: DELACRUZ, JULIUS
Sent: Monday, May 13, 2019 9:34 AM
To: MARRIOTT, JOHN <jmarrio�@velocitel.com>; LAI, WINNIE <wl425p@a�.com>
Cc: BERNARD, GLENN <gb240k@a�.com>; GREENWOOD, KENNETH <kgreenwood@velocitel.com>
Subject: RE: College & Drake COL03242 FA#14390423 Planner Needs
Also, how high is the parapet wall?
Julius Delacruz
RMR RAN Design
From: DELACRUZ, JULIUS
Sent: Monday, May 13, 2019 9:26 AM
To: MARRIOTT, JOHN <jmarrio�@velocitel.com>; LAI, WINNIE <wl425p@a�.com>
Cc: BERNARD, GLENN <gb240k@a�.com>; GREENWOOD, KENNETH <kgreenwood@velocitel.com>
Subject: RE: College & Drake COL03242 FA#14390423 Planner Needs
RE: College & Drake COL03242 FA#14390423 Planner Needs
2 of 4 6/11/2019, 1:00 PM
John,
Please find a�ached AT&T’s standard ‘Before & A�er’ coverage plots for NSB COL03242.
Also, can I please have the length in feet the distance from the antennas to the corner of the roo�op (shown by the red line)?
Thanks.
Regards,
Julius Delacruz
RMR RAN Design
From: MARRIOTT, JOHN
Sent: Tuesday, May 07, 2019 5:37 PM
To: DELACRUZ, JULIUS <jd235u@a�.com>; LAI, WINNIE <wl425p@a�.com>
Cc: BERNARD, GLENN <gb240k@a�.com>; GREENWOOD, KENNETH <kgreenwood@velocitel.com>
Subject: College & Drake COL03242 FA#14390423 Planner Needs
Julius and Winnie
We are going to need RF documents for College & Drake. Need to show why the antennas need to be close to the edge of the roof line (current
design shows them 5 feet off the roofline).
Or how far back can you push them. Fort Collins wants them as close the middle as possible. Need to give jus�fica�on for the placement for
each sector as they are currently being shown on the ZD’s.
Will need maps, propaga�ons, le�er of jus�fica�on, etc…anything that can best show the coverage objec�ve and why the loca�on on the roof
is needed.
Thank you.
John Marrio�
VELOCITEL
RE: College & Drake COL03242 FA#14390423 Planner Needs
3 of 4 6/11/2019, 1:00 PM
Site Acquisi�on
Rocky Mountain Region
Parker, CO 80134
Phone: 303-840-1837
jmarrio�@Velocitel.com
www.velocitel.com
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RE: College & Drake COL03242 FA#14390423 Planner Needs
4 of 4 6/11/2019, 1:00 PM