Field Team 2
RF Survey 3.4 GHz (Phase II) CS FWA Glasgow
Radiocommunications Agency
Baldock Radio Station
Royston Road
Baldock
Hertfordshire
SG7 6SH
Assistance requested:
Tests carried out on:
Report issued on:
Revised:
6th February 2001
13 and 14th March 2001
29th May 2001
24th January 2003
th
Report Number: ML2 001-01
RF Survey 3.4 GHz (Phase II) CS FWA Glasgow
Work Performed by
Measurements & Report
Dave Ball. Field Team 2
Manager
Measurements & Report
Roy Gerstner. FT 2
Assistant
Measurements & Report
Dave Sweeney. FT 1
Assistant
Report Authorisation
Eddie Bull. Operations
Manager
.
Distribution
Steve Jones RA2/PWN
1
Ricky Donnegan RA2/PWN
1
Case/Year file
1/1
Eddie Bull RA3/Baldock
1
Page 1 of 14
Report: ML2 001-01
Field Team 2
RF Survey 3.4 GHz (Phase II) CS FWA Glasgow
Report: ML2 001-01
Table of Contents
1.
INTRODUCTIONS .................................................................................................................................................. 3
2.
METHOD .................................................................................................................................................................. 4
2.1
2.2
ROOFTOP SURVEYS ............................................................................................................................................... 4
ROOFTOP EQUIPMENT CONFIGURATION ............................................................................................................... 4
3.
WEATHER CONDITIONS ..................................................................................................................................... 4
4.
RESULTS .................................................................................................................................................................. 5
5.
SURVEY LOCATIONS & MEASUREMENT CRITERIA ................................................................................. 6
5.1
ROOFTOP LOCATION – GLASGOW NAUTICAL COLLEGE NGR NS592642 ................................................................ 6
5.1.2
Equipment Used and System Gain ............................................................................................................ 6
5.1.3
Rooftop System Noise Floor and Confidence Check ................................................................................ 6
5.2
ROOFTOP LOCATION DUNDASVALE COURT NGR NS587662 ................................................................................. 7
5.2.1
Equipment Used and System Gain ............................................................................................................ 7
5.2.2
Rooftop System Noise Floor ...................................................................................................................... 7
5.3
ROOFTOP LOCATION – GLENAVON ROAD, MARY HILL NGR NS569693 ................................................................. 8
5.3.1
Equipment Used and System Gain ............................................................................................................ 8
5.3.2
Rooftop System Noise Floor ...................................................................................................................... 8
6.
GENERAL ................................................................................................................................................................ 9
6.1
EQUIPMENT IDENTIFICATION ................................................................................................................................ 9
7. ANNEX A. ................................................................................................................................................................... 10
DUNDASVALE COURT ROOF TOP SURVEY ..................................................................................................................... 10
8. ANNEX B. ................................................................................................................................................................... 12
GLENAVON ROAD MARY HILL ROOF TOP SURVEY ....................................................................................................... 12
Page 2 of 14
Field Team 2
1.
RF Survey 3.4 GHz (Phase II) CS FWA Glasgow
Report: ML2 001-01
Introductions
The Fixed and Mobile Monitoring and Measurement Section was tasked by RA2/PWNU to carry
out a RF survey in the 3.4 GHz band allocated to Fixed Wireless Access. The Spectrum is to be relicensed and the survey is to confirm what if any threat signals exist in these bands.
It was agreed that 3 roof top surveys would be carried out in cities nominated by RA2/PWNU.
These rooftop surveys are to represent Central Stations (CS).
It was agreed that 3 roof top surveys would be carried out in Glasgow. These rooftop surveys were
to represent CS.
Six positions centred round each rooftop have previously been surveyed at ground level with the
laboratory mast raised to 6m to represent Terminal Station (TS) antenna heights. The six positions
represented coverage areas of the sectored antennas used by the CS. The results of the previous
survey can be found in an earlier report:
Report No. ML2 0015 RF Survey 3.4 GHz (Phase I) TS FWA Glasgow
Due to re-alignment of the band, the FWA spectrum was amended from 3.425 – 3.442 GHz paired
with 3.476 – 3.493 GHz (Phase I) to 3.480 – 3.500 paired with 3.580 – 3.600 GHz (Phase II).
However the proposed re-alignment had not been confirmed at this time hence the entire frequency
band was surveyed i.e.:
3.400 - 3.600 GHz
With the Spectrum Analyser in max hold mode, only signals detected +6 dB above the system
noise floor were deemed significant enough to be included in this report.
Although Annexes A and B contain results exceeding the predetermined threshold, these signals are
not within either the Phase I or II bands.
As agreed with RA2/PWNU no attempt has been made to identify signals in this report.
Page 3 of 14
Field Team 2
RF Survey 3.4 GHz (Phase II) CS FWA Glasgow
2.
Method
2.1
Rooftop Surveys
Report: ML2 001-01
A tripod mounted horn antenna with LNA was used to carry out the survey allowing 360° polar
survey to be carried out in 20° steps in both horizontal and then vertical polarisation. A spectrum
analyser was used in max hold mode and 10 sweeps were made in each antenna position before the
trace was captured as a file onto computer.
Only signals captured with amplitudes of 6 dB or greater above the system noise floor, in max hold
mode, were warranted significant.
Horn antenna +
LNA
IEEE BUS
Computer
Spectrum
Analyser
Feed
2.2
Rooftop Equipment Configuration
3.
Weather Conditions
The survey has been carried out on the 13 and 14 March 2001. The plots display a date time code
e.g. MA131217 is 13 March 1217Hrs. The table below gives weather conditions for the days of the
survey.
Date of Survey
13 March 2001
14 March 2001
Weather Conditions
Bright, patchy cloud, moderate winds Temp 7°C
Bright, patchy cloud, moderate winds Temp 7°C
Page 4 of 14
Field Team 2
4.
RF Survey 3.4 GHz (Phase II) CS FWA Glasgow
Report: ML2 001-01
Results
The results of the survey are given in the form of spectrum analyser plots in Annexes A and B.
Although Annexes A and B contain results exceeding the predetermined threshold, these signals are
not within either the Phase I or II bands. Only plots of signals with levels +6 dB and above the
system noise floor have been included in the report. No signals were detected at Glasgow Nautical
College. The tables below summarise the worst case (radiated) noise floor levels and interference
levels for Glasgow:
3.4 GHz CS 100 kHz bandwidth
City
Glasgow
Noise Floor dBm
Lower Band Upper
-118
-118
Interference H dBm
Lower Band Upper
-118
-118
Page 5 of 14
Interference V dBm
Lower Band Upper
-118
-118
Field Team 2
RF Survey 3.4 GHz (Phase II) CS FWA Glasgow
5.
Survey Locations & Measurement Criteria
5.1
Rooftop Location – Glasgow Nautical College NGR NS592642
5.1.2
Equipment Used and System Gain
System Gain @ 3.4 GHz
Flann Standard Gain Horn Model 11A240-20 3.22 - 4.9 GHz
Locus Inc LNA RF 3000-35-60B3
Micro-Coax UFB142A-1-2362-300310 6 m green cable
System Gain
5.1.3
Report: ML2 001-01
18.7 dB Gain
51.0 dB Gain
3.2 dB Loss
66.5 dB
Rooftop System Noise Floor and Confidence Check
Display Noise Level (dBm) in 100 kHz Resolution Bandwidth Max Hold
Location
Frequency Band GHz
Display Noise dBm
System Noise Floor in
100 kHz BW
Glasgow
Nautical College
3.4 – 3.6
-51.6
-99.4
3.95 GHz satellite beacon received at a level of –76 dBm
Page 6 of 14
Field Team 2
RF Survey 3.4 GHz (Phase II) CS FWA Glasgow
5.2
Rooftop Location Dundasvale Court NGR NS587662
5.2.1
Equipment Used and System Gain
System Gain @ 3.4 GHz
Flann Standard Gain Horn Model 11A240-20 3.22 - 4.9GHz
Locus Inc LNA RF 3000-35-60B3
Micro-Coax UFB142A-1-2362-300310 6 m green cable
System Gain
5.2.2
Report: ML2 001-01
18.7 dB Gain
51.0 dB Gain
3.2 dB Loss
66.5 dB
Rooftop System Noise Floor
Display Noise Level (dBm) in 100 kHz Resolution Bandwidth Max Hold
Location
Frequency Band GHz
Display Noise dBm
System Noise Floor
In 100 kHz BW
dBm
Dundasvale
Court
3.4 – 3.6
-52
-99.8
3.95 GHz satellite beacon received at a level of –74 dBm
Page 7 of 14
Field Team 2
RF Survey 3.4 GHz (Phase II) CS FWA Glasgow
5.3
Rooftop Location – Glenavon Road, Mary Hill NGR NS569693
5.3.1
Equipment Used and System Gain
System Gain @ 3.4 GHz
Flann Standard Gain Horn Model 11A240-20 3.22 - 4.9 GHz
Locus Inc LNA RF 3000-35-60B3
Micro-Coax UFB142A-1-2362-300310 6 m green cable
System Gain
5.3.2
Report: ML2 001-01
18.7 dB Gain
51.0 dB Gain
3.2 dB Loss
66.5 dB
Rooftop System Noise Floor
Display Noise Level (dBm) in 100 kHz Resolution Bandwidth Max Hold
Location
Frequency Band GHz
Display Noise dBm
System Noise Floor in
100 kHz BW dBm
Glenavon Road
Mary Hill
3.4 – 3.6
-52
-99.8
3.95 GHz satellite beacon received at a level of –75 dBm
Page 8 of 14
Field Team 2
RF Survey 3.4 GHz (Phase II) CS FWA Glasgow
6.
General
6.1
Equipment Identification
Equipment Type
HP Spectrum Analyser
Flann Microwave SGH 3.2 - 4.9 GHz
Locus Inc LNA
Flann Microwave 9.84 – 15 GHz
SGH
L-Teq 9.732 - 15.012 GHz LNA
Micro-Coax
Rosenberger 5m cable (silver)
Report: ML2 001-01
Model
8565E
11A240-20
RF3000-35-60B3
17240-20
Serial No
3611A0040
936
198
JSD00186
UFB142A-1-2362-300310
UTI-106-5000
564016
0051759
02K-08K-001
Page 9 of 14
Field Team 2
RF Survey 3.4 GHz (Phase II) CS FWA Glasgow
Report: ML2 001-01
7. Annex A.
Dundasvale Court Roof Top Survey
Page 10 of 14
Field Team 2
RF Survey 3.4 GHz (Phase II) CS FWA Glasgow
Report: ML2 001-01
Dundasvale Court – 3.4 – 3.6 GHz Antenna Vertical
*ATTEN
0dB
RL
-20.0dBm
MKR
-46.00dBm
3.4437983GHz
Filename
is
Ma131632
5dB/
*
D
CENTER
3.4437983GHz
*RBW
30kHz
VBW
30kHz
SPAN
SWP
Fig 1 175° magnetic
Page 11 of 14
500.0kHz
50.0ms
Field Team 2
RF Survey 3.4 GHz (Phase II) CS FWA Glasgow
Report: ML2 001-01
8. Annex B.
Glenavon Road Mary Hill Roof Top
Survey
Page 12 of 14
Field Team 2
Report: ML2 001-01
RF Survey 3.4 GHz (Phase II) CS FWA Glasgow
Glenavon Road, Mary Hill – 3.4 – 3.6 GHz Antenna Vertical
*ATTEN
RL
0dB
-25.0dBm
MKR
-48.58dBm
3.4632927GHz
5dB/
Filename
is
Ma140955
*
D
CENTER
*RBW
10kHz
3.4633193GHz
VBW
SPAN
SWP
10kHz
500.0kHz
50.0ms
Fig 1 210° magnetic
Glenavon Road, Mary Hill – 3.4 – 3.6 GHz Antenna Vertical
*ATTEN
RL
0dB
-25.0dBm
MKR
-48.83dBm
3.512042GHz
5dB/
Filename
is
Ma140959
*
D
CENTER
*RBW
10kHz
3.512042GHz
VBW
10kHz
SPAN
SWP
Fig 2 210° magnetic
Page 13 of 14
1.000MHz
50.0ms
Field Team 2
Report: ML2 001-01
RF Survey 3.4 GHz (Phase II) CS FWA Glasgow
Glenavon Road, Mary Hill – 3.4 – 3.6 GHz Antenna Horizontal
*ATTEN
RL
0dB
-20.0dBm
MKR
-46.00dBm
3.4634742GHz
5dB/
Filename
is
Ma141007
*
D
CENTER
3.4635067GHz
*RBW
30kHz
VBW
SPAN
SWP
30kHz
500.0kHz
50.0ms
Fig 3 210° magnetic
Glenavon Road, Mary Hill – 3.4 – 3.6 GHz Antenna Vertical
*ATTEN
0dB
RL
-30.0dBm
MKR
-47.92dBm
3.507195GHz
Filename
is
Ma141010
5dB/
D
CENTER
3.507250GHz
*RBW
3.0kHz
VBW
3.0kHz
SPAN
SWP
Fig 4 150° magnetic
Page 14 of 14
1.000MHz
280ms