MAYOR AND BOARD OF ALDERMEN DATE SUBMITTED: DATE OF

DATE SUBMITTED:

EXECUTIVES~Y MAYOR AND BOARD OF ALDERMEN

November 18, 2013

DATE OF WORKSHOP SESSION: NIA

DATE OF PUBLIC MEETING: December 5, 2013

TO:

FROM:

RE:

MAYOR & BOARD OF ALDERMEN

JUDI ARNOLD

FOURTH AMENDMENT TO LEASE AGREEMENT WITH APC REALTY & EQUIPMETN COMPANY; LLC dba SPRINTINEXTEL

PURPOSE: APC Realty & Equipment Company, LLC a Delaware Limited Liability company dba SprintlNextel- Modification to the Facility.

FUNDING SOURCE: NIA

HISTORY: The City of Frederick entered into a Lease Agreement with APC Realty and Equipment Company, LLC on October 5, 1995 at the water tower located at 6262 Butterfly Lane for the purpose of locating nine (9) cellular transmission antennas and an equipment building. Ground space consists of 15' L xIS' W. On November 7, 1996 a First Amendment to the lease was signed allowing 9 antennas and 3 additional equipment cabinets on an increased ground space of25'L x 25'W; the 20 year term now beginning January 1, 1996; rent increased an additional $100.00 per month; termination language added; notice address was amended; and Section 19 was added. On Marchl7, 2000 a Second Amendment to the lease was signed which allowed the Tenant to operate two different types of personal communication technologies (GSM and CDMA). Exhibit B has been revised and the lease now says they lease ground space for the purpose of installing, operating, maintaing, repairing and replacing nine panel antennas and three equipment cabinets upon the property. We also granted them a 20' wide ingress, egress, and utility easement from the closest public road or alley to the Water Tower; rent was stipulated at $800.00 per month; and Notice address was amended. A Third Amendment to the Lease was signed on October 19,2012 allowing modifications to the facility in two phases which the first phase consisted of adding the following: 3 panel antennas, 1 microwave dish antenna, 3 remote radio heads, 3 1 114" hybrid cables, 1 CAT-5 line, 1 fiber junction box, and one equipment'cabinet. Second phase consisted of removing all three existing CDMA antennas & lines; six 1 5/8" coax cables, and four equipment cabinets.

X.3

SCOPE: Modifications consist of:

• Add one (I) SBX2-I07AMPT microwave dish • Add one (I) SBX4-WIOOAMPT microwave dish • Add two (2) CAT-5 lines

Once the modifications are complete, their total count of all equipment would be: six (6) antennas; three (3) equipment cabinets; and 5 + CAT-5 coax cabling. Per Paragraph 3 of the Second Amendment to Lease Agreement a total of nine (9) panel antennas and three (3) equipment cabinets are permitted upon the Water Tower Propelty.

RECOMMENDATION: Staffreconmlends acceptance ofthe Fourth Amendment to the Lease Agreement with APC Realty and Equipment Company, LLC dba SprintlNextel as per the original lease 4. A. which states "Landlord hereby grants its approval and permission for Tenant to install, maintain, replace and operate the radio communications equipment, antennas, structures and/or

other improvement necessary or appropriate for such uses, provided same do not interfere with Landlord's ongoing use of the Property."

BACKUP INCLUDED: FOUlth Amendment to the Lease, Equipment Cut Sheets, Interference Analysis Repoli, Antenna Mount Analysis

REVIEWED BY DEPARTMENT HEAD: . (j; { / J, Ii, Department Head/Chief

CONCURRENCE BY: Date

FINANCE LEGAL

PURCHASING POLICE

PUBLIC WORKS PLANNING

ENGINEERING HR

OTHER

Date

, I t j /!~

;*i

Site Name: Butterfly Lane Water Tank Site ID #: DC03XC487

FOURTH AMENDMENT TO LEASE AGREEMENT

This Fourth Amendment to Lease Agreement (this "Fourth Amendment"), effective as of the date last signed below ("Effective Date"), amends a celiain Lease Agreement between APC Realty and Equipment Company, LLC, a Delaware limited liability company dba SprintlNextei ("Tenanf') and The City of Frederick, a Municipal Corporation of the State of Maryland ("Landlord"), dated October 5, 1995, as amended by that certain First Amendment, dated November 7, 1996 ("First Amendment"), and by the Second Amendment, dated March 17,2000 ("Second Amendment"), and by the Third Amendment, dated October 19,2012 ("Third Amendment") by and between the Landlord and Tenant.

BACKGROUND

WHEREAS, Tenant desires to modify its installation on the Premises by adding or swapping out antennas and other equipment to the Facilities, as more particularly described in Exhibit B-1 attached hereto, and Tenant and Landlord desire to modify the provisions of the Agreement as provided below.

AGREEMENT

For good and valuable consideration the receipt and sufficiency of which are acknowledged, Landlord and Tenant agree as follows:

1. Modification to the Facilities. The third revised Exhibit B to the Lease, added by the Third Amendment, is hereby amended to include the modifications identified on Exhibit B-1, a copy of which is attached and made a part hereof. Exhibit B-1 supplements the third revised Exhibit B to the Lease, and shall not be deemed to supersede 01' othenvise modify the third revised Exhibit B 01' any pali thereof except to the extent specifically set fOlih in Exhibit B-1. The scope of work for modifications consist of:

• Add one (I) SBX2-107AMPT microwave dish • Add one (I) SBX4-WIOOAMPT microwave dish • Add two (2) CAT-5 lines

The fmal count would be: six (6) antennas; three (3) equipment cabinets; and 5 + CAT-5 coax cabling. Per paragraph 3 of the Second Amendment to Lease Agreement a total of nine (9) panel antennas and tlu'ee (3) equipment cabinets are permitted upon the Water Tower Property.

2. Frequency Use. Provided that any fl'equencies used by Tenant will not cause interference with the properly licensed and permitted pre-existing frequencies in use or in operation at the Facilities and notwithstanding anything to the contrary contahled herein, Tenant may operate the Facilities at any frequencies for which it has all requisite permits, leases 01'

licenses.

3. Notice Address. The notice addresses in Paragraph 18 of the Lease for the party or parties listed below are hereby deleted in their enth'ely and replaced with the following:

To Landlord: The City of Frederick 10 I North Court Street Frederick, MD 21701 Attn: Facilities Manager

To Tenant:

With a mandatory copy to:

4. General Terms and Conditions.

SprintlNextel Property Services Sprint Site 10: DC03XC487 Mailstop KSOPHTO 1 0 l-Z2650 6391 Sprint Parkway Overland Park, Kansas 6625 J -2650

SprintlNextel Law Department Sprint Site 10: DC03XC487 Mailstop KSOPHTOJOI-Z2020 639J Sprint Parkway Overland Park, Kansas 66251-2020 Attn.: Real Estate Attorney

a. All capitalized terms used in this FOUlth Amendment, unless otherwise defined herein, will have the same meaning as the terms contained in the Agreement.

b. In case of any inconsistencies between the terms and conditions contained in the Agreement and the terms and conditions contained in this Fourth Amendment, the terms and conditions herein will control. Except as set forth below, all provisions of the Agreement are ratified and remain unchanged and in full force and effect.

c. Each of the paIties represents and warrants that it has the right, power, legal capacity and authority to enter into and perform its respective obligations under this Amendment.

***SIGNATURES ON FOLLOWING PAGE***

Basic Amendment template, Project Vision

RevisedS.2S.1\ 2

The parties have executed this Amendment as ofthe Effective Date.

Landlord: The City of Frederick

By:

Printed Name: Randy McClement ----~~~~~==------

Title: MAYOR

Date:

Approved for Legal Sufficiency:

City Attorney

Basic Amendment template, Proje~t Vision

Revised 5.25.11

Tenant: APC Realty and Equipment Company, LLC

By:

Printed Name:

Title:

Date:

3

Basic Amendment template, Project Vision

Revised 5.25.11

Exhibit B-t

[see attached]

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Technical Data Sheet SBX2-107AB

CompactLine Antenna, Dual Polarized, 2 ft 10.7 -11.7 GHz

Product Description (Under phase out. Replaced by SCX2-W100AB)

RFS CompactLine® Antennas are designed for short-haul microwave systems in aU common frequency ranges from 6 GHz to 60 GHz. The antennas are cost-effective products for microwave point-ta-point transmission links in cellular and private user networks. Antennas are available in 1 ft (O.3m) up to 6 ft (1.8m) diameters. The modified cassegrain feed syste'm results in a short shroud with reduced environmental impact, weight and tower load. The antennas are available in single polarised (88) as well as In dual polarised versions (SBX). All antennas include a solid radome which is specially shaped to minimise its impact on the antenna's electrical characteristics. The antennas meet the ultra high performance radiation characteristic.

Technical Features Product Type

Frequency, GHz

Diameler, ft (m)

Profile

Performance

Polarization

Regulatory Compliance

3dB beaml'lidlh, (degrees)

Antenna Input

Low Band Gain, dBi

Mid Band Gain, dBi

High Band Gain, dBi

FIB Ratio, dB

XPD, dB

IPI, dB

Max VSWR I R L, dB

FCC Standard

ETSI Standard

Elevation Adjustment, degrees

Azimuth Adjustment, degrees

Polarization Adjustment, degrees

Pressure, bar (psi)

Radome

Antenna color

Mounting Pipe Diameter minimum, mm (in)

Mounting Pipe Diameter maximum, mm (in)

Approximate Weight, kg (Ib)

Survival Windspeed, kmlh (mph)

Operational Windspeed, kmlh (mph)

~ ,.-- i i "1. .. 1

Antenna

Point to point antennas

10.7-11.7

2 (0.6)

CompactLine

Ullra High

Dual

Siandard, EN 302217, FCC

3.0

PBR100

34.8

35.1

35.4

60

30

35

1.30/17.7

B

Range 1, class 3

± 30

± 30

±5

0.3 (4.3)

Included

VV'hite

51 (2)

114 (4.5)

12 (26.5)

250 (156)

180 (112)

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Technical Data Sheet SBX2-107AB (Con!.)

CompactLine Antenna, Dual Polarized, 2 It 10.7 -11.7 GHz

For Side force max. at 110 kmlh (68 mph), N (Ib)

FAT Axial force max. at 110 kmlh (68 mph), N (Ib)

M Torque max. at 110 kmlh (68 mph), Nm (ff Ib)

FST Side force max. at 200 kmlh (125 mph), N (Ib)

FAT Axial force max. at 200 kmlh (125 mph), N (Ib)

M Torque max. at 200 kmlh (125 mph), Nm (ft Ib)

II /

90 (20)

270 (60)

80 (60)

290 (65)

905 (202)

260 (192)

F

0A B C 0D for mounting pipe diam, E F

. ~

" 5 'il

t

700 (28) 289 (11.5) 114 (4.5)

Notes .9 no notes 11

Documentation ."

" . Reflector installation g Feed installation )

219 (8 •• ) 114 (4 .• ) 89 (3 •• ) 51 (2.0)

371 (14.6) 357 (14.0) 333 (13.1) 99 (3.9) 146 (5.7)

Radiation pattern: (NSMA format) Radiation pattern: (PDF format)

Technical Data Sheet SBX4-W100AB

CompactLine Antenna, Ultra High Performance, Dual Polarized, 4 It

Product Description

RFS CompactLine® and CompactLine® Easy Antennas are designed for short-haul microwave systems in all common frequency ranges from 6 GHz to 80 GHz. They are typically deployed in dense urban areas, metropolitan and suburban locations, aggregation points. They are especially optimized to integrated radios to reduce costs, installation complexity and time.

Features/Benefits • Tested and validated ullra·high (ETSt EN 302 217 Class 3, FCC Class A) electrical performance • Low-profite design to reduce transportation requirements, wind load and antenna weight • Simplified mounting design to accelerate installation • Hardcover radomes • Support for winds up to 320 kmlh (195 mph) • An optional sway bar for antennas 1.0 m (3 ft) and larger for added assurance in case mistakes are made during installation • Frequencies ranging from 5.925 GHz to 80 GHz with support for three wideband frequency ranges

(5.925·7.125, 7.125·8.5 and 10-11.7) to reduce antenna requirements and simplify logistics • Sizes ranging from 0.3 m (1 ft) to 1.8 m (6 ft) • Single (SB and SC) and dual·polarized (SBX and SCX) models with the ability to upgrade from single

to dual polarization and. change frequencies in the field • CompactLine EASY models are extra light and easy to transport, deploy and upgrade

Technical Features Product Type Point to point antennas

Frequency, GHz 10-11.7

Diameter, ft (m) 4(1.2)

Profile CompactUne

Reflector

Swaybar 1: (1.35 mx027 mm)

optional Swaybar 1: SMA-SK-4A (1.35 mx033 mm)

Performance Ultra High

Polarization Dual

Regulatory Compliance ETSI EN 302217 Range 1 Class 3 , FCC Category A

3da bearrr.'ooth, (degrees) 1.5

Antenna Jnput paR 100

Low Band Gain, dBi 39.4

Mid Band Gain, dBi 39.9

High Band Gain. dBi 40,3

FIB Ralio, dB 66

XPD, dB 30

tPt, dB 35

Max VSINR I R l, dB 1.3 (17.7)

Elevation Adjustment, degrees ± 15

Azimuth Adjustment, degrees ±5

Polarization Adjustment, degrees ±5

Radome rigid

Antenna color White RAL 9010

Mounting Pipe Diameter minimum, mm (in) 114 (4.5)

Mounting Pipe Diameter maximum. mm (in) 114 (4.5)

ApprOximate Weight, kg (Ib) 35 (77)

SurvivallNindspeed, km'h (mph) 200 (125)

Operational INindspeed, kmIh (mph) 200 (125)

Further Accessories SMA-SKO·UNIVERSAL : Universal sway bar fixation kit

J[jk' II c""J€l"

, J'1/ Antenna

Technical Data Sheet SBX4-VV100AB (Con!.)

Compactline Antenna, Ultra High Performance, Dual Polarized, 4 ft

All values @ Survival Wind Speed

FST Side force max, N (Ib)

FAT Fa Axial force max, N (Ib)

M Torque max., Nm (Ib·ft)

Dimensions

0A B C D@ Mounting pIpe 0219 (8.5): D@Mountingpipe0114(4.5): o @ Mounting pipe 0 89 (3.5): D@Mountingpipe048(1.9): E F

Notes no notes

Documentation

mm(in)

1262 (49.7) 631 (24.9) 24B (9.B) not applicable 365 (14.4) not applicable not applicable 115 (4.5) 365 (14.4)

1360 (306)

3290 (740)

1055 (7B4)

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21 B Street Burlington, MA 01803

Tel: (781) 273.2500 Fax: (781) 273.3311

CO-LOCATION INTERFERENCE ANALYSIS REPORT

Prepared By: EBI Consulting 21 B Street Burlington, MA 01803 (781) 418-2322 Engineer: Scott Heffernan

Sprint DC03XC487 Butterfly Lane Water Tank

6262 Butterfly Lane Frederick, MD 21702

Delivered: August 01, 2012


1.0 Executive Summary

This report presents a radio frequency interference (RFI) analysis which was performed on the Sprint DC03XC487 Butterfly Lane Water Tank site. The RFI analysis consists of transmitter noise, receiver desensitization, intermodulation, harmonic and transmitter spurious output interference. The report consists of Sections that provide details of the communications site, antenna systems, operational frequencies and each interference analysis mode.

A summary of the interference analysis results is depicted in the following Table.

Interference Analysis Mode Type Status Summary Worst·Case Mix Margin (dB)

Transmitter Noise N/A Passed No Interference was predicted 18.8 Receiver Desensitization N/A Passed No Interference was predicted 52.3 Transmitter Intermodulation 1 Tx Passed No Interference was predicted N/A Transmitter Intermodulation 2Tx Passed No Interference was predicted N/A Transmitter Intermodulation 3Tx Passed No Interference was predicted N/A Transmitter Intermodulation 4 Tx Passed No Interference was predicted N/A Transmitter Intermodulation 5 Tx Passed No Interference was predicted N/A Receiver Intermodulalion 1 Tx Passed No Interference was predicted N/A Receiver Intermodulation 2Tx Passed No Interference was predicted N/A Receiver I ntermodulation 3Tx Passed No Interference was predicted N/A Receiver Intermodulation 4 Tx Passed No Interference was predicted N/A Receiver Intermodulation 5 Tx Passed No Interference was predicted N/A Transmitter Harmonics N/A Passed No Interference was predicted N/A Transmitter Spurious Output N/A Passed No Interference was predicted N/A Interference Level Summing· C/(I+N) N/A Passed No Interference was predicted N/A

The analysis was performed with the setup options depicted in the Table below.

Analysis Description Receiver Performance Receiver sensitivity threshold plus 6/12 dB margin Receiver Bandwidth Receiver Dependent Antenna Patterns Considered Yes Measured Antenna Isolation Data No Filters/Multicouplers Considered Yes Number of Simultaneous Transmitters Mixed 5 Highest Intermodulation Order Tested 7 Condense Intermodulation Hit Quantitv Yes - IOOOIOrder TX 1M Bandwidth Multiplication Yes TxlRx Systems Excluded None Site File Name Sprint DC03XC487 Butterfly Lane Water Tank.dta Report File Name Sprint WA54XC706 North Beach Water Tank Rl.docx ComSitePro Software Version 8.1.12

EBI Consulting 21 B Street, Burlington, MA 01803 Page 1


5 Andrew 13.6 90 B Dplx H/41n. Foam 0.95 169.6 6 Andrew ( 13.6 107 lBO C Dplx H/4 in. Foam 0.95 169.6 7 Andrew 13.6 270 0 Dplx 1/4 in. Foam 3.65 169.6 B Celwave PDll09 (941 MHz) B.02 107 0 Dplx 1-5/B in. Foam 0.81 169.6 9 RFS 15.B lC A Dplx 1-5/8 in. Foam .2 190 10 RFS C-2 15.B 107 115 8 [ )Ix 1-5/8 in. Foam 1.2 190

RFS ·2 15.B 10 245 )Ix 1-5/8 in. Foam .2 190 12 RFS C-2 15.B 107 10 A [ )Ix 1-51B in. Foam 1.2 190 13 RFS AP 15.B 15 B )Ix 1-5/8 in. Foam 1.2 190 14 RFS 15.B 107 245 C )Ix 1-5/B in. Foam 1.2 190

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1920 '.MSI 14.3 120 0 A in. roam 1.2 145 7762.' ~

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23 RFS 15.9 1~7 260 C Dplx 1-51B in. Foam 1.2 245



32 8

33 9 I-MoOlle 1900 MHz Ericsson

34 9 , -MOO"" 1900 MHz Ericsson

35 9 I-MOOlle 1900 MHz Ericsson

36 9 '-MOO"" WUU MHz ericsson

37 9 '-Moo"e 1900 MHz Ericsson

38 9 -MVV"" 1900 MHz Ericsson

39 9 '-Moo"e 1900 MHz Ericsson

40 9 . -,~vu,," 1900 MHz Ericsson

41 10 -MOO"" 1900 MHz Ericsson

42 10 I-Mooile 1900 MHz Ericsson

43 10 -MVV"" 1900 MHz Ericsson

44 10 '-Mooi,e 1900 MHz Ericsson

45 10 -,~uui," 1900 MHz Ericsson

46 10 '-Mooile 1900 MHz

47 10 I-Mooile 1900 MHz Ericsson

48 10 '-Muuio" 19UO MHz """"V,,

49. 11 '-Mooile 1900 MHz

50 11 '-Mvv;'e 1900 MHz Ericsson

51 11 , -MOOlle 1900 MHz Ericsson

52 11 I -MOOlle 1900 MHz Ericsson

53 11 , -MUU"" 190U MHz ericsson

54 11 '-Mooile 1900 MHz Ericsson

55 11 '-Mvu,l" 1900 MHz Ericsson

5611 '-MooileI900MHz Ericsson

57 12 I-Moolle 2100 MHz Ericsson

58 13 '~Mvv,le 2100 MHz

59 14 '-Moo,le 2100 MHz

60 15 AT&T 850 MHz 61 15 AT&T 850 MHz 62 15 AT&T 850 MHz 63 15 AT&T 850 MHz 64 16 AI&I850MHz 65 16 AT&T 850 MHz 66 16 AT&T 850 MHz 6. 16 AI&1850MHz 68 17 AT&T 850 MHz 69 17 AT&T 850 MHz

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EBI Consulting 21 B Street, Burlington, MA 01803

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Page 5


4.0 Receiver Frequencies

Freq Ant Provider Model Technology Channel Label ID Frequency Sen BW # # (dBm) (KHz)

1 1 Frederick Emergency Motorola FM Land Mobile 1 A 806.012500 -116 25 Manaaement

2 1 Frederick Emergency Motorola FM Land Mobile 2 B 806.512500 -116 25 Management

3 1 Frederick Emergency Motorola FM Land Mobile 3 C 806.612500 -116 25 Manaaement

4 1 Frederick Emergency Motorola FM Land Mobile 4 0 806.912500 -116 25 Management

5 1 Frederick Emergency Motorola FM Land Mobile 5 E 807.012500 -116 25 Manaoement

6 1 Frederick Emergency Motorola FM Land Mobile 6 F 807.512500 -116 25 Management

7 1 Frederick Emergency Motorola FM Land Mobile 7 G 808.012500 -116 25 Management

8 1 Frederick Emergency Motorola FM Land Mobile 8 H 808.225000 -116 25 Manaqement

9 1 Frederick Emergency Motorola FM Land Mobile 9 I 808.475000 -116 25 Management

10 1 Frederick Emergency Motorola FM Land Mobile 10 J 808.750000 -116 25 Manaoement

11 1 Frederick Emergency Motorola FM Land Mobile 11 K 809.987500 -116 25 Management

12 1 Frederick Emergency Motorola FM Land Mobile 12 L 811.137500 -116 25 ManaQement

13 1 Frederick Emergency Motorola FM Land Mobile 13 M 811.487500 -116 25 Manaaement

14 1 Frederick Emergency Motorola FM Land Mobite 14 N 812.487500 -116 25 Management

15 1 Frederick Emergency Motorola FM Land Mobile 15 0 813.087500 -116 25 Manaaement

16 1 Frederick Emergency Motorola FM Land Mobile 16 P 813.487500 -116 25 Management

17 1 Frederick Emergency Motorola FM Land Mobile 17 Q 814.487500 -116 25 ManaQement

18 2 Frederick Emergency Other Microwave 1 R 5945.20000 -83 5000 Management MW 0

19 2 Frederick Emergency Other Microwave 2 S 6375.14000 -83 5000 Management MW 0

20 3 Frederick City UHF Motorola FM Land Mobile 1 T 465.475000 -116 25 21 6 Eduro Networks Motorola Wireless Data Access Chan 11 U 916.600000 -100 160

(Molorola Canopy) 22 6 Eduro Networks Motorola Wireless Data Access Chan 14 V 917.080000 -100 160

(Molorola Canopy) 23 6 Eduro Networks

(Molorola Can~D-") Motorola Wireless Dala Access Chan 18 W 917.720000 -100 160

24 6 Eduro Networks Motorola Wireless Data Access Chan 62 X 924.760000 -100 160 (Molorola Canopy)

25 6 Eduro Networks Motorola Wireless Data Access Chan 67 Y 925.560000 -100 160 (Molorola CanoDY)

26 6 Eduro Netwo~Sy) Motorola Wireless Data Access Chan 79 Z 927.480000 -100 160 (Motorola Cano

27 8 Frederick City Water Motorola FM Land Mobile Chan 1 AA 915.000000 -116 160 Depl

28 8 Frederick City Water Motorola FM Land Mobile Chan 7 AB 915.960000 -116 160 DeDI

29 8 Frederick City Water Motorola FM Land Mobile Chan 71 AC 926.200000 -116 160 Dept

30 8 Frederick City Water Motorola FM Land Mobile Chan 53 AD 923.320000 -116 160 Depl

31 8 Frederick City Water Motorola FM Land Mobile Chan 31 AE 919.800000 -116 160 DeDI

32 8 Frederick City Water Motorola FM Land Mobile Chan 35 AF 920.440000 -116 160



73 18 AI&I 1900 MHz

74 18 AT&T 1900 MHz

75 18 AI&I 19UU MHz

76 19 AT&T 1900 MHz

77 19 AT&T 1900 MHz

78 19 AT&T 1900 MHz

79 19 AT&T 1900 MHz

80 20 AT&T 1900 MHz

81 20 AT&T 1900 MHz

82 20 AI&I 19UU MHz

83 20 AT&T 1900 MHz

84 21 Sprinl1900 MHz

85 21 Sprint 1900 MHz




89 22

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Sprint 1900 MHz

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Sprint 1900 MHz

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Sprint 8~OJ.1elz ;print 850 M jz tprint 850 Ii elz

Sprint 85011 elz ;pnnl 850 N jz

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EBI Consulting 21 B Street, Burlington, MA 01803

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Chan 425 CF

Chan 500 CG

Chan 575 CH

Chan 650 Ci

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Page 9


6.0 Receiver Desensitization Analysis

Receiver desensitization interference occurs when an undesired signal from a nearby "011-frequency" transmitter is sufficiently close to a receiver's operating frequency. The signal may get' through the RF selectivity of the receiver. If this undesired signal is of sufficient amplitude, the receiver's critical voltage and current levels are altered and the performance of the receiver is degraded at its operating frequency. The gain of the receiver is reduced, thereby reducing the performance of the receiver.

A transmitter can be operating several megahertz away from the receiver frequency and/or its antenna can be located several thousand feet from the receiver's antenna and still cause interference.

The analysis predicts each transmitter's signal level present at the input of each receiver. It takes into account the transmitter's power output, frequency separation, transmission line losses, filters, duplexers, combiners, isolators, multi-couplers and other RF devices that are present in both systems. Additionally, the analysis considers the antenna separation space loss, horizontal and vertical gain components of the antennas as well as how they are mounted on the structure. The gain components are derived from antenna pattern data published by each manufacturer.

The analysis determines how much isolation is required, if any, to prevent receiver performance degradation caused by receiver desensitization interference. The Table below depicts the results of this analysis. For each receiver, the transmitter that has the worst-case impact is displayed. The Signal Margin represents the margin in dB, before the receiver's performance is degraded. A negative number indicates that the performance is degraded and the value indicates how much additional isolation is required to prevent receiver performance degradation.

Receiver Receive Receive Transmitter Transmit Transmit Attn AUn Signal Provider Channel Frequency Provider Channel Frequency Required Provided Margin

(MHz) (MHz) (dB) (dB) (dB)

None

Analysis Results: No receiver desensitization interference problems were predicted.



7.1 Transmitter Generated Intermodulation Analysis

Intermodulation in transmitters occurs when a signal from another transmitter is impressed on the nonlinear final output stage circuitry, usually via antenna coupling. The power level of the 1M product is determined by the power level of the incoming extraneous signal from another transmitter and by a conversion loss factor. The conversion loss factor takes into account the mixing efficiency of the transmitter's final output stage. Conversion loss differs with transmitter design, adjustment, frequency separation of the source signals, and with the order of the 1M product.

The analysis calculates all possible 1M product frequencies that could potentially interfere with receivers at the communications site based on each receiver's individual bandwidth. It then predicts each 1M signal level present at the input of each affected receiver. For each 1M frequency, the analysis considers all possible sources of 1M generation in the transmitters. For example, if there are four transmitters involve, the analysis will calculate the 1M signal level that would be generated in each transmitter. For this example, that would be four possible mixing conditions.

The analysis takes into account the transmitter's power output, modulation bandwidth, conversion losses, transmission line losses, filters, duplexers, combiners, isolators, multi-couplers and other RF devices that are present in each system. Additionally, the analysis considers the antenna separation space loss, horizontal and vertical gain components of the antennas as well as how they are mounted on the structure. The gain components are derived from antenna pattern data published by each manufacturer.

The analysis determines how much isolation is required to prevent receiver performance degradation for each 1M interference signal that occurs. Receivers experiencing transmitter generated intermodulation interference are depicted in the following Table.

Tx 1 Source Tx 2 Source TX 3 Source Tx 4 Source Tx 5 Source (ntermod Affected MixTx Hit Receiver

10 Freq ID Freq 10 (~re~) 10 ~re;) 10 ~re;) Fre;) Ord 10 Fre;) (MHz) . (MHz) MHz MHz MHz (MHz (MHz

~oo I I I I I I I I I I I I I

Analysis Results: No transmitter generated intermodulation interference problems were predicted.

I


Attn Need


8.0 Transmitter Harmonic Output Interference Analysis

Transmitter harmonic interference is due to non-linear characteristics in a transmitter. The harmonics are typically created due to frequency multiplers and the non-linear design of the final output stage of the transmitter. If the harmonic signal falls within the passband of a nearby receiver and the signal level is of sufficient amplitude, it can degrade the performance of the receiver.

The analysis takes into account the transmitter's harmonic characteristics, output level, transmission line losses, filters, duplexers, combiners, isolators, multi-couplers and other RF devices that are present in each system. Additionally, the analysis considers the antenna separation space loss, horizontal and vertical gain components of the antennas as well as how they are mounted on the structure. The gain components are derived from antenna pattern data published by each manufacturer.

The analysis determines how much isolation is required to prevent receiver performance degradation for any harmonics that fall within a receiver's· passband. Receivers experiencing transmitter harmonic interference are depicted in the following Table.

Transmitter Harmonic Affected Alln Receiver Needed

ID Frequency Frequency Order ID Frequency (MHz) (MHz) (MHz)

None

Analysis Results: No transmitter generated harmonic interference problems were predicted.



10.0 Conclusion

Based upon the data received regarding the existing radio equipment utilized by the existing commercial wireless carriers and the proposed radio configuration for the Sprint installation, there will not be any negative impact to the performance of any of the existing commercial wireless radio systems or to that of any radio system owned by the City of Frederick from the proposed Sprint installation

This analysis was performed solely based upon radio configuration data provided by AlcatelLucent and Sprint as well as queries from the FCC ULS database and EBI's internal database of existing carriers in the area. In certain instances where assumptions were required industry standard values were utilized. The scope of this study was limited to radio systems present on this tower exclusively. It does not take into account emissions from surrounding radio sources.

Additionally, this analysis was also performed assuming that all radio equipment including lines and antennas are performing to manufacturers specifications. Each system was analyzed assuming proper filtering was used to maintain compliance with all FCC licenses and reduce out of band emissions.

Scott Heffernan RF Engineering Director

EBI Consulting 21 B Street Burlington, MA 01803


architects

eng inc e c s

ANTENNA MOUNT ANALYSIS

A1catel Lucent Site Number - DC03XC487

Alcatel Lucent Site Name - Butterfly Lane

September 19, 2013

Prepared for: Alcatel Lucent

9305 Gerwig Lane Columbia, MD 21046

Be Architects Engineers, PLC 5661 Columbia Pike, Suite 200, Falls Cburch, VA 2204-1-2868 Tel (703) 671-6000 Fax (703) 671-6300

September 19, 2012

Mr. Jackson Clark Alcatd-Lucent 9305 Gerwig Lane Columbia, lvID 21046-1580

RE: DC03XC487 - Butterfly Lane Water Tank 6262 Butterfly Lane, Frederick, MD 21702

.Mr. Clark,

architects

engineers

Pursuant to your request we have c01npleted analysis and design of the lnicrowave dish mounts, including incidental equipment, for sectors alpha and beta on the perimeter handrail of the water tank catwalk referenced above. Please refer to the attached calculations and project drawings.

111is is to certify that to the best of 1ny knowledge and professional opinion, antenna support systetn components have been designed in accordance with the applicable codes and standards, as required by the IBC-2012.

11,e stmctural assessment completed by BC Architects Engineers, PLC on behalf of Alcatel/Lucent ,vas inclusive of the antenna supporting frames/mounts and all associated connections that will support the Sprint Network Vision equipment deployment.

Sincerely,

Christopher D. Morin, P.E. Principal Member, BC Architects, Engineers, PLC

BC Architects Engineers, PLC 5661 Columbia Pike, Suite 200, Falls Chmcb, VA 22041-2868 Tel (703) 671-6000 Fax (703) 671-6300

Site Name: Butterfly Lane \Vr Site ID; DC03XC487 !\.ddress: 6262 Butterfly Lane City & State: Frederick, Maryland

Page: 1 Date; 09-19-2013 Designed By: E.C Checked By; c.~1.

11,e purpose of this calculation package is to examine the adequacy of existing handrail and design

new 1110tl11ts and attachments for support of new micro\vave dishes and other equiptnent on the

handrails of an existing water tank.

Loading criteria

Risk category III: 3-secolld gust: 120 mph

Exposure categ01Y: B

Terrain: flat, per ASCE 7-05, figure 6-4: Is, == 1.0

"tvfaximutn rad center for antennas: 107'

Wind velocity pressure per ASCE 7.05, Section 6.5.10:

q, == 0.00256 k, k" k" v2 i (psi)

Per ASCE 7.05, Table 6-3, ,,~th exposure categ01Y "B", and height of 107', velocity pressure

exposure coefficient, Is will be: 1.02

Per table 6-4, directionality factor, kd ,,~Il be: 0.85

Importance factor, i == 1.0,

111erefore:

q, == 0.00256 (1.02) (1.0) (0.85) (120)2 (1) == 32 psf

Site Name: Butterfly Lane \XTf Site ill: DC03XC487 Address: 6262 Butterfly Lane City & State: Frederick, Maryland

P)""~(Gl PUS fJb.\){s) w,.'mD TO (E) FPE WST.

SECTOR 2

Page: 3 Date: 09-19-2013 Designed By: E.c. Checked By: c.J\!'

Site Name: Butterfly Lane Wry Site ID: DC03XC487 Address: 6262 Butterfly Lane City & State: Frederick, Maryland

Check Existing 'Vater Tank Handrail:

Page: 5 Date: 09-19-2013 Designed By: E.c. Checked By: C.1!.

Handrail posts are L2x2x3/16". Diagonal bracing members are connected to d,e top horizontal

angle at 6' oc. The new nucrowave will be 1nountcd on existing mount pipes. Conservatively

assutning nucrowave dishes will be tnounted 1n the center of the 6' section:

171 Ib

3' 3' ~ I

Left reaction = right reaction = 86 lb.

Maximum moment imposed on horizontal angle, tn. = 258 Ib.ft.

R . d . diS M" AI" Z58(lZ") 0 l' 3 equlre sectIon tna U us, = - = --- = = . 1n Fb 0.9 x Fy 0.9(36000)

L2x2x3/16" have a section modulus 0[0.188 > 0.1 ~ Adequate.

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MAYOR AND BOARD OF ALDERMEN DATE SUBMITTED: DATE OF