Off Air Antenna Reception Analysis ABC Communications Anytown

Off Air Antenna Reception Analysis
ABC Communications
Anytown, USA
Receive Site:
Some CO, Somewhere
Coordinates: N 55° 55' 55"
W 55° 55' 55"
Ground Elevation: 555 Feet AMSL
January 29, 2008
ENGINEERING FOR TELECOMMUNICATIONS
244 West Pioneer Road • P.O. BOX 1003 • Fond du Lac, WI 54936-1003 • 920.923.1034 • FAX: 920.923=1086
www.techplanners.com • EMAIL: info@techplanners.com
Table of Contents
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Report Introduction
Report Summary
i-iii
iv-v
Broadcasters to Receive Sites Map
1
Grade A / MFSCL Signal Contour Map
2
Grade B / DNLS Signal Contour Map
3
On-site Measured Levels Charts
4-5
On-site Measured Levels Charts
6-7
On-site Measured Levels Charts
8-9
On-site RF Spectrum Screen Shots
10-14
On-site RF Spectrum Screen Shots
15-22
On-site RF Spectrum Screen Shots
23-28
On-site RF Spectrum Screen Shots Nacogdoches
29-37
Receive Site Path Profiles Largent
38-41
Desired Field Calculation Parameters Largent
42-45
Receive Site Path Profiles
46-50
Desired Field Calculation Parameters
51-55
Desired Channel Information Chart
56-57
Undesired Channel Information Chart
58-59
Co-Channel Diagrams
60-64
Antenna Model Number Chart
65
Receive Site Tower Diagram
66
A detailed report and analysis has been prepared for VideoTele.com and their client
Consolidated Communications. Technical input for this report was provided by: Wade Antenna
and FCC databases. The RF path loss formulas follow Longley Rice RF propagation models.
Three second topographic elevation data was used for all points between broadcasters and the
receive location.
A large amount of reference information has been assembled within this report. Please retain
within your system records for future reference. This document will be very useful if any level
deterioration may occur with any received signal. A report containing the actual measured levels
after initial construction should also be retained for comparative purposes.
Drawings containing the grade A and B signal contours have been included. These will serve
several purposes. They represent a quick look at your receive site position; with respect to the
broadcasters. They will also serve as a reference for various levels of FCC compliance
requirements. The following is a brief description of these established levels.
The FCC established three signal contour grades for broadcasters and receivers to reference. An
FCC defined “City Grade Service Contour” is a location in which indoor, or low gain outdoor
antennas, can be deployed to produce a noise free picture. A “Grade A Service Contour” is
generally defined as a location distance where a standard television antenna placed at 30Ft.
above the ground can produce a clear noise free picture. The “Grade B signal Contour”
represents a radius where a 30Ft antenna can be used to produce a reasonably good picture that
will contain some noise. It is important to note that higher and larger antennas can extend these
receive ranges; additional noise can be expected. It is the ratio of signal level to the ambient
noise levels that change the perceived viewing quality.
For reference purposes the table below defines the FCC signal contours
Channels
Channels 2-6
Channels 7-13
Channels 14-69
Grade B Service
Contour
47 dbu
56 dbu
64 dbu
Grade A Service
Contour
68 dbu
71 dbu
74 dbu
City Grade Service
Contour
74 dbu
77 dbu
80 dbu
i
The above text and information charts are used to describe typical analog television broadcast
field strength as presently used by U.S. broadcasters. At present an entirely new broadcast
technology is being phased into operation in the United States. This is a transition to digital
broadcasting. This new service is generally referred to as DTV (Digital Television). The
transmission system is 8VSB.
The FCC has provided a phased step migration toward, what will become an all digital over the
air broadcast system. Generally speaking each existing analog television station was allowed to
occupy another channel for DTV transmission during this process. Rules governing interference
with the existing operations were relaxed in order to facilitate this migration process.
Transmission power levels and receive signal strength are different for DTV signals. It was the
FCC’s goal to grant broadcasters a power level that was expected to closely provide the same
coverage radius as their existing analog footprint.
An analog television signal will slowly degrade with distance and signal level. This
characteristic is not true with a digital broadcast. One very positive attribute of a DTV signal is
the consistently high picture quality that is achieved. However, this same positive characteristic
also creates a signal cliff effect. A digital signal will continue to render a very high quality
signal until the receiver can no longer lock to the signal. This is a very sharp point. A small
change in received signal level, or drop in carrier to noise ratio will unlock the received picture.
The picture will begin to tile and then be lost completely. For these reasons the former signal
grade designators do not provide proper information for a DTV signal.
The FCC has adopted the long used grade “A” and grade “B” signal contours. The categories are
DTV Noise-Limited Service area and Minimum Field Strength over the Community of License.
Generally the classifications of antenna height and type drop away. The reception limiting
factors become signal level and carrier to noise ratio. The chart below will help explain the new
signal level classifications that are used to calculated approximate signal coverage contours. The
timing phase in process for increased signal level was designed to lessen capital cost issues for
broadcasters. This field strength phase in is an important factor to remember. It is possible that
even a relatively local broadcaster may not be receivable until full operating power has been
reached.
These tables have been established as a relative guide. The actual results will vary greatly. This
is especially important at receive locations where greater than average amounts of noise may be
present. To an analog signal noise may have just been the source of impulse picture problems.
In a DTV environment the same noise sources may prevent picture lock completely. Time of
day and weather conditions can have a great impact on final results. A marginal location may
have perfect received picture quality until certain times of the day or weather pattern changes.
We share this information so that the reader may can some understanding of the process and new
key parameters.
ii
Channels
DTV Noise-Limited
Service
Channels 2-6
Channels 7-13
Channels 14-69
28 dbu
36 dbu
41 dbu
Minimum Field
Strength over
Community of
License After Dec
31, 2004 (For all
Commercial TV) or
after Dec. 31, 2005
(For Noncommercial
Educational TV)
35 dbu
43 dbu
48 dbu
All of the desired analog and their corresponding DTV signals have been evaluated. Each signal
that may present co-channel interference has also been examined. It should be noted that the
broadcast universe is not static, but changes. The information and recommendations contained
within is a snapshot of the environment at this time.
iii
Summary of Off-Air Study
Our on-site off-air signal measurement study consisted of four sites: Existing sites at A
, B, C, and D . Each site will be
summarized separately in their own report. This report shall focus on the D
site.
A
Site
On-site field measurement study
This site is an existing hut location without an existing tower. The site is on local hill, in
a residential environment and is seemingly unencumbered by terrain features. Local
building and trees would raise minimum height requirements. The survey was conducted
on a sunny warm mid-afternoon. Several channels were tested and the following are
observations made during the site visit:
1. In general this site was very hostile to analog reception. All analog channels
exhibited some form of: Heavy ghosting, electrical interference, or such poor
signal levels as to be unwatchable. We were unable to receive any of the X
Low Power stations, as well as the Y stations.
2. The digital version of KXXX did not seem to be on at all.
3. We tested the digital channels with a special 8VSB meter that measures various
error ratios in detail. All the digital channels at this site had (with the exception
of KXXX) poor carrier levels and error ratio measurements.
It was determined on site that this location would be unsuitable for off-air reception. No
further study of this site is discussed in this report.
D Site
On-site field measurement study
This site is an existing hut location without an existing tower. The site is on flat level
ground, in a rural environment and is seemingly unencumbered by terrain features. The
survey was conducted on a sunny warm mid-morning. Several channels were tested and
the following are observations made during the site visit:
iv
1. In general this site was very hostile to analog reception and digital reception.
Heavy electrical noise was prevalent throughout the analog channels and noise
could be seen prominently throughout the RF spectrum.
2. The electrical problems at this site were so thorough, that further testing was
discontinued.
It was determined on site that this location would be unsuitable for off-air reception. No
further study of this site is discussed in this report.
B Site
On-site field measurement study
This site is an existing hut location without an existing tower. The site is on flat level
ground, in a suburban environment and is seemingly unencumbered by terrain features.
The survey was conducted on a sunny warm mid-morning. Several channels were tested
and the following are observations made during the site visit:
1. This site represented a vast improvement over the other two sites. Signal levels
and picture quality on all major desired stations were acceptable.
2. The electrical problems that were observed at the B site (which was done
the night before) were not seen at this site.
3. All levels were slightly lower than that at the B site.
4. While KFXX-LP 30 was acceptable, the other local LP stations- KXXX
5, and KXXX 13 all exhibited either very poor signal level noise or heavy
electrical impulses. (KXXX, it was noted had the same issues on the local
incumbent’s version as well.)
Off-air detailed paper study
The list of channels to further study was brought down to five. These five channels plus
their respective potential co-channel interference source stations were all analyzed in
detail at our office. The five channels are:
.
From the data on the following pages we have determined several things:
v
1. The B site was originally favored and thus emphasis was placed on studying
this location. Upon further study and coupled with the fact that a local heliport
prohibited any sizable tower construction, it was determined that this site would
be dropped in favor of the C warehouse site. The C warehouse
site was not actually tested on-site, however, it is reasonably close in proximity to
the actual testing site as to be practically the same. This site is where the balance
of this report shall focus upon.
2. Both the analog and digital channel calculated receive levels correlate to the onsite measured levels. This shows that the real-world environment is not any more
hostile to the off air carriers, than is indicated by the calculated figures.
3. Referencing the Broadcast Signal Contour Maps on pages 2-3; This tower site is
not in the best location to meet all coverage areas. For the most part it is within
Grade B, but not in equivalent This information supports the pictures found in the
field and also reinforces the assertion that this site may and probably will be prone
to periodic signal degradations. These signal level changes may affect picture
quality on channel 22 and especially 31.
4. KXXX should be noted, is a compromise at this site. At the time of testing
the signal for this channel could not be found, which may indicate that they were
not on at the time, or it could mean that the level was too low for our
instrumentation to measure. In either case the calculated demodulator input level
is fairly low and the resulting picture may be compromised is atmospheric
conditions degrade the signal level further.
5. Potential co-channel interference sources were analyzed for all desired analog
stations. While several co-channel-to-desired channel ratios are close, based on
our analysis co-channel interference from other broadcasters should not be a
factor for all the desired stations.
Summary
During our on-site visit, we tested four separate locations to see which has the best off-air
reception potential for the five channels in question. The C warehouse site was
eventually chosen based on available tower erection space, proximity to the CO and
limiting factors at D. While the D site is not an ideal location for off-air pickup
in this market, it represents a reasonably sufficient reception location, considering the
challenges of this market.
The final conclusions and tower/antenna diagrams assume a new 180 foot tower is to be
erected.
vi
WCFE 57
44° 41' 43"
73° 53' 00"
WVNY 22
44° 31' 40"
72° 48' 58"
A Receive Site
44° 28' 15"
73° 11' 51"
WETK 33
WFFF 44
44° 31' 32"
72° 48' 54"
WPTZ 05
44° 34' 26"
73° 40' 29"
WCAX 03
44° 31' 36"
72° 48' 57"
WGMU 39
44° 21' 52"
72° 55' 53"
WFFF 44
WCAX 03
WVNY 22
WETK 33
A Receive Site
44° 28' 15"
73° 11' 51"
WCFE 57
WGMU 39
WPTZ 05
WVNY 22
WCFE 57
WETK 33
A Receive Site
44° 28' 15"
73° 11' 51"
WGMU 39
WCAX 03
WFFF 44
WPTZ 05
On-Site Measured Levels
and Field Notes: A
Call
Letter Service Channel
Measured
Level*
(dbmv)
Antenna
Gain
(dbd)
Relative
Equivalent
Dipole
Level
(dbmv)
Field Notes
KXXX
DT
11
-5.0
3.65
-8.65
N/A
KXXX
DT
18
-24.0
3.95
-27.95
N/A
KXXX
DT
22
-24.6
4.25
-28.85
N/A
KXXX
DT
31
NM
N/A
KXXX
TX
30
NM
N/A
KXXX
TV
9
4.1
3.55
0.55
KXXX
TV
19
-6.2
4.05
-10.25
Fairly clean picture with heavy trailing edge ghost.
KXXX
TV
56
-26.6
2.80
-29.40
Very poor- low signal level 'snow'.
KXXX
TV
51
NM
KXXX
TV
38
NM
Electrical impulse noise throughout picture
NM= Not Measureable or not on.
* Using a test antenna at FCC reference hieght of 30 feet.
Receive Site- Lane Drive Site-A, USA N 55°55' 55" W 55° 55' 55"
Ground Elevation- 347 feet AMSL
4
8VSB On-site Measurements A
Average
Carrier
Level
(dBmV)
Pre-ReedPilot Ratio
Solomon
(8VSB pilot Error Vector Modulation
Forward Error ErroredMargin
Magnitude Error Ratio
relative to
Seconds
(MER-TOV) Correction
(MER)
(EVM)
channel level)
(Err Sec)
(PreRS)
(dB)
(dB)
(MER as %)
(dB)
Echo
Loading
(%RMS)
Date of Test Time of Test
Site Name: A
Session Info: KYTX-DT 18
Channel Number: 18
Channel Type: ATSC
12/12/2006 12:04:40 AM
12/12/2006 12:06:19 AM
12/12/2006 12:07:47 AM
12/12/2006 12:09:15 AM
12/12/2006 12:10:42 AM
12/12/2006 12:12:09 AM
-24.90773
-24.97318
-25.18051
-25.37636
-25.62057
-25.87337
-13.28987
-15.93203
-13.99192
-14.29764
-13.71164
-13.10775
12.68004
14.70292
12.9514
13.79016
14.70292
11.69326
17.26874
15.98307
17.08481
16.53976
15.98307
17.97243
3.018736
1.733074
2.834812
2.289762
1.733074
3.722431
1.65E-02
1.65E-02
1.65E-02
1.65E-02
1.65E-02
1.65E-02
0
0
0
0
0
0
31.73511
17.00787
15.30627
15.67097
19.48303
14.46619
Site Name: A
Session Info: KETK-DT 22
Channel Number: 22
Channel Type: ATSC
12/12/2006
12/12/2006
12/12/2006
12/12/2006
12:23:53 AM
12:25:26 AM
12:26:59 AM
12:28:32 AM
-29.96458
-30.02651
-30.16079
-30.21936
-10.04753
-10.17971
-9.788029
-11.0604
-399
-399
-399
-399
-399
-399
-399
-399
-399
-399
-399
-399
-399
-399
-399
-399
-399
-399
-399
-399
-399
-399
-399
-399
Site Name: A
Session Info: KTRE-DT 11
Channel Number: 11
Channel Type: ATSC
12/12/2006
12/12/2006
12/12/2006
12/12/2006
12:35:57 AM
12:37:24 AM
12:38:50 AM
12:40:18 AM
-5.156937
-5.138041
-5.165992
-5.169122
-11.13657
-11.4507
-11.29493
-11.36884
7.918855
7.499478
7.524147
8.017532
21.3579
21.83053
21.802
21.25033
7.107899
7.580526
7.552002
7.000332
3.91E-05
3.91E-05
3.91E-05
3.91E-05
0 5.479109
0 5.364611
0 5.334324
0 5.67385
7
On-Site Measured Levels
and Field Notes: B
Call
Letter Service Channel
Measured
Level*
(dbmv)
Antenna
Gain
(dbd)
Relative
Equivalent
Dipole
Level
(dbmv)
Field Notes
KTRE
DT
11
19.0
3.65
15.35
N/A
KYTX
DT
18
-14.2
3.95
-18.15
N/A
KETK
DT
22
-20.4
4.25
-24.65
N/A
KFXK
DT
31
NM
KFXL
TX
30
8.5
4.35
4.15
KTRE
TV
9
30.0
3.55
26.45
Clear picture, good quality- Very intermittent electrical noise
KYTX
TV
19
0.6
4.05
-3.45
Clear picture, good quality- Very intermittent electrical noise
KETK
TV
56
-23.6
2.80
-26.40
KFXK
TV
51
NM
KCEB
TV
38
NM
KLSB
LP
53
3.2
1.15
2.05
KLUF
LP
5
-2.3
0.25
-2.55
KHTM LP
13
-13.5
2.95
-16.45
N/A
No apparent Problems
Very poor- low signal level 'snow'.
Good picture, with regularly occuring electrical noise
Poor picture- Electical impulses throughout.
Extremely poor.
NM= Not Measureable or not on.
* Using a test antenna at FCC reference hieght of 30 feet.
Receive Site- B, USA N 55°55' 55" W 55°55' 55"
Ground Elevation- 125 feet AMSL
5
8VSB On-site Measurements B
Average
Carrier
Level
(dBmV)
Date of Test Time of Test
Site Name: B
Session Info: KETK-DT 22
Channel Number: 22
Channel Type: ATSC
12/12/2006 12:09:23 AM -20.63034
12/12/2006 12:10:58 AM -20.64566
12/12/2006 12:12:23 AM -20.56786
Pre-ReedPilot Ratio
Solomon
(8VSB pilot Error Vector Modulation
Forward Error ErroredMargin
Magnitude Error Ratio
relative to
Seconds
(MER-TOV) Correction
(MER)
(EVM)
channel level)
(Err Sec)
(PreRS)
(dB)
(dB)
(MER as %)
(dB)
-13.5321
-13.08823
-13.11491
5.846632
5.402584
5.254568
23.99303
24.67912
24.92041
9.743032
10.42912
10.67041
1.10E-04
1.10E-04
1.10E-04
Echo
Loading
(%RMS)
0 6.032323
0 6.043848
0 5.999424
Site Name: B
Session Info: KYTX-DT 18
Channel Number: 18
Channel Type: ATSC
12/12/2006
12/12/2006
12/12/2006
12/12/2006
12:23:59 AM
12:25:29 AM
12:26:57 AM
12:28:26 AM
-16.13265
-16.12085
-16.13283
-16.11233
-11.44552
-11.59516
-11.32444
-11.4084
4.810519
3.996432
4.193786
4.711842
25.68731
27.2977
26.87902
25.86733
11.43731
13.0477
12.62902
11.61733
0
0
0
0
0
0
0
0
10.56435
10.57862
10.61519
10.51002
Site Name: B
Session Info: KTRE-DT 11
Channel Number: 11
Channel Type: ATSC
12/12/2006
12/12/2006
12/12/2006
12/12/2006
12/12/2006
12:41:42 AM
12:43:08 AM
12:44:34 AM
12:46:00 AM
12:47:05 AM
17.73369
17.80574
17.76031
17.79397
17.83644
-11.27238
-10.96656
-10.96787
-11.06496
1.00E-02
1.184128
1.381483
1.48016
1.381483
-399
37.86317
36.52424
35.92497
36.52424
-399
23.61317
22.27424
21.67497
22.27424
-399
0
0
0
0
-399
0
0
0
0
-399
4.749608
4.271144
4.287126
4.238074
-399
8
On-Site Measured Levels
and Field Notes: C
Call
Letter Service Channel
Measured
Level*
(dbmv)
Antenna
Gain
(dbd)
Relative
Equivalent
Dipole
Level
(dbmv)
Field Notes
KTRE
DT
11
15.0
3.65
11.35
N/A
KYTX
DT
18
-27.2
3.95
-31.15
N/A
KETK
DT
22
-20.5
4.25
-24.75
N/A
KFXK
DT
31
NM
KFXL
TX
30
5.5
4.35
1.15
KTRE
TV
9
29.0
3.55
25.45
KYTX
TV
19
-10.0
4.05
-14.05
Clear picture
KETK
TV
56
-25.0
2.80
-27.80
Poor.
KFXK
TV
51
NM
KCEB
TV
38
NM
KLSB
LP
53
-0.3
1.15
-1.45
Good picture, with very occasional electrical noise
KLUF
LP
5
-5.1
0.25
-5.35
Poor picture- Electical imlusles throughout.
KHTM LP
13
-16.0
2.95
-18.95
N/A
No apparent Problems
Clear picture, good quality
Extremely poor, with audio that cuts out.
NM= Not Measureable or not on.
* Using a test antenna at FCC reference hieght of 30 feet.
Receive Site- C, USA N 55°55' 55" W 55°55' 55"
Ground Elevation- 262 feet AMSL
6
8VSB On-site Measurements C
Average
Carrier
Level
(dBmV)
Pre-ReedPilot Ratio
Solomon
(8VSB pilot Error Vector Modulation
Forward Error ErroredMargin
Magnitude Error Ratio
relative to
Seconds
(MER-TOV) Correction
(MER)
(EVM)
channel level)
(Err Sec)
(PreRS)
(dB)
(dB)
(MER as %)
(dB)
Date of Test Time of Test
Site Name:C
Session Info: KETK-DT
Channel Number: 22
Channel Type: ATSC
12/13/2006 11:14:39 AM
12/13/2006 11:16:26 AM
12/13/2006 11:17:54 AM
12/13/2006 11:19:22 AM
12/13/2006 11:20:46 AM
12/13/2006 12:09:07 AM
12/13/2006 12:10:48 AM
12/13/2006 12:12:17 AM
-20.24539
-20.29873
-20.50691
-20.78615
-21.02033
-23.28944
-23.32505
-23.51297
-12.03724
-12.2848
-12.12345
-12.11041
-12.14797
-14.30928
-14.59409
-14.17409
6.315349
6.734728
6.882744
6.833405
7.425468
10.23777
8.83162
9.053645
23.3232
22.76475
22.57591
22.6384
21.91667
19.12704
20.41034
20.19468
9.0732
8.514746
8.325914
8.388403
7.66667
4.877037
6.160339
5.944677
0
0
0
0
0
1.22E-03
1.22E-03
1.22E-03
Site Name: C
Session Info: KYTX-DT
Channel Number: 18
Channel Type: ATSC
12/13/2006
12/13/2006
12/13/2006
12/13/2006
12/13/2006
11:45:50 AM
11:47:16 AM
11:48:48 AM
11:50:18 AM
11:51:43 AM
-26.61331
-26.68786
-26.82089
-27.02528
-27.30293
-12.93071
-13.20933
-13.84459
-13.42751
-13.13435
12.26066
11.76727
11.34789
-399
12.23599
17.56087
17.91763
18.23284
-399
17.57837
3.310871
3.667631
3.982841
-399
3.328365
0
0
0
-399
0
Site Name: C
Session Info: KTRE-DT
Channel Number: 11
Channel Type: ATSC
12/13/2006
12/13/2006
12/13/2006
12/13/2006
12:00:32 PM
12:02:00 PM
12:03:25 PM
12:04:51 PM
14.85124
14.81145
14.86264
14.87185
-8.669016
-8.93989
-8.985622
-8.992319
1.430821
2.812304
2.269579
1.800861
36.21944
30.3499
32.21224
34.22154
21.96944
16.0999
17.96224
19.97154
0
0
0
0
0
0
0
0
0
0
0
0
Echo
Loading
(%RMS)
4.781326
5.142811
4.763203
5.025094
5.000488
8.682394
9.167811
8.259023
342 27.45992
285 30.29997
513 25.6763
-399
-399
57 33.62358
0
0
0
0
4.276931
3.992946
4.016945
4.003016
9
RF Spectrum Screen Shots of KYTX 19 Analog
A
10
RF Spectrum Screen Shots of KYTX-DT 18
A
11
RF Spectrum Screen Shots of KETK 56 Analog
A
12
RF Spectrum Screen Shots of KETK-DT 22
A
13
RF Spectrum Screen Shots of KTRE 9 Analog
A
14
RF Spectrum Screen Shots of KETK 56 Analog
B
15
RF Spectrum Screen Shots of KETK-DT 22
B
16
RF Spectrum Screen Shots of KYTX 19 Analog
B
17
RF Spectrum Screen Shots of KYTX-DT 18
B
18
RF Spectrum Screen Shots of KTRE 9 Analog
B
19
RF Spectrum Screen Shots of KTRE-DT 11
B
20
RF Spectrum Screen Shots of KFXL-LP 30
B
21
RF Spectrum Screen Shots of KLSB-LP 53
B
22
RF Spectrum Screen Shots of KETK-DT 22
C
23
RF Spectrum Screen Shots of KLUF-LP 5 & KHTM-LP 13
C
24
RF Spectrum Screen Shots of KTRE 9 Analog
C
25
RF Spectrum Screen Shots of KTRE-DT 11
C
26
RF Spectrum Screen Shots of KFXL-LP 30 & KLSB-LP 53
C
27
RF Spectrum Screen Shots of KYTX 19 and DT 18
C
28
RF Spectrum Screen Shots of KETK 56 Analog
D
29
RF Spectrum Screen Shots of KETK-DT 22
D
30
RF Spectrum Screen Shots of KYTX-DT 18
D
31
RF Spectrum Screen Shots of KYTX 19 Analog
D
32
RF Spectrum Screen Shots of KTRE 9 Analog
D
33
RF Spectrum Screen Shots of KTRE-DT 11
D
34
RF Spectrum Screen Shots of KFXL-LP 30
D
35
RF Spectrum Screen Shots of KLSB-LP 53
D
36
RF Spectrum Screen Shots of KLUF-LP 5
D
37
38
39
40
41
January 19, 2007
13:26
KTRE-DT 11 DA: 31 25 9.00 N 94 48 3.00 W
Frequency: 201.00000 MHz ERP: 9.6400 kW
Path: 7.0028 mi; Azimuth 158.4808
Step: 0.1000 mi; Effective Earth Curvature: 1.333
Topo Data: 3-second
Interpolation: FCC Interpolation (4 points)
Longley-Rice: LR Defaults
TX Ant: 931.52ft MSL (Site 411.97ft + 519.55ftAGL)
RX Site MSL adjusted to: 261.73 ft
RX Ant: 321.73ft MSL (Site 261.73ft + 60.00ftAGL)
Azimuth: 158.481
TX Antenna Gain: Az 0.00 dB; El 0.00 dB (angle = -0.945)
Free Space Field: (9.640 kW @ 7.003 mi)
95.72 dBu
Free Space Loss: 95.27 dB (between dipoles)
Additional Estimated transmission loss :9.93 dB
Line-of-sight path
LR Mode: 11
Polarization: H
Surface Refrac: 0.00(300.90)
Permittivity: 15.00 Conductivity: 0.0050
Climate: Continental Temperate
Confidence: 90.00 Reliability: 90.00
Path terrain Delta-H: 144.03 ft
Effective antenna heights: 566.09 ft
60.00 ft
Net received field: 19477.56 uV/m
RX Gain: 0.00 dBd
RX Loss: 0.00 dB
RX Input: 71.68 dBuV
42
January 19, 2007
13:30
KYTX-DT 18: 31 54 20.00 N 95 05 5.00 W
Frequency: 497.00000 MHz ERP: 640.0000 kW
Path: 44.4359 mi; Azimuth 154.1731
Step: 0.1000 mi; Effective Earth Curvature: 1.333
Topo Data: 3-second
Interpolation: FCC Interpolation (4 points)
Longley-Rice: LR Defaults
TX Ant: 1875.83ft MSL (Site 330.95ft + 1544.88ftAGL)
RX Site MSL adjusted to: 261.73 ft
RX Ant: 441.73ft MSL (Site 261.73ft + 180.00ftAGL)
Azimuth: 154.173
TX Antenna Gain: Az 0.00 dB; El 0.00 dB (angle = -0.350)
Free Space Field: (640.000 kW @ 44.436 mi)
97.89 dBu
Free Space Loss: 119.18 dB (between dipoles)
Additional Estimated transmission loss :14.73 dB
Line-of-sight path
LR Mode: 11
Polarization: H
Surface Refrac: 0.00(300.90)
Permittivity: 15.00 Conductivity: 0.0050
Climate: Continental Temperate
Confidence: 90.00 Reliability: 90.00
Path terrain Delta-H: 204.81 ft
Effective antenna heights: 1619.86 ft
180.00 ft
Net received field: 14398.49 uV/m
RX Gain: 0.00 dBd
RX Loss: 0.00 dB
RX Input: 61.19 dBuV
43
January 19, 2007
13:45
KETK-DT 22 DA: 32 03 40.00 N 95 18 50.00 W
Frequency: 521.00000 MHz ERP: 987.6000 kW
Path: 60.4127 mi; Azimuth 146.9895
Step: 0.1000 mi; Effective Earth Curvature: 1.333
Topo Data: 3-second
Interpolation: FCC Interpolation (4 points)
Longley-Rice: LR Defaults
TX Ant: 1947.30ft MSL (Site 580.00ft + 1367.30ftAGL)
RX Site MSL adjusted to: 261.73 ft
RX Ant: 461.73ft MSL (Site 261.73ft + 200.00ftAGL)
Azimuth: 146.989
TX Antenna Gain: Az 0.00 dB; El 0.00 dB (angle = -0.267)
Free Space Field: (987.600 kW @ 60.413 mi)
97.11 dBu
Free Space Loss: 122.26 dB (between dipoles)
Additional Estimated transmission loss :32.23 dB
Line-of-sight path
LR Mode: 11
Polarization: H
Surface Refrac: 0.00(300.90)
Permittivity: 15.00 Conductivity: 0.0050
Climate: Continental Temperate
Confidence: 90.00 Reliability: 90.00
Path terrain Delta-H: 289.47 ft
Effective antenna heights: 1367.30 ft
200.00 ft
Net received field: 1753.72 uV/m
RX Gain: 0.00 dBd
RX Loss: 0.00 dB
RX Input: 42.49 dBuV
44
January 11, 2007
16:36
KFXL TX 30 DA: 31 21 55.00 N 94 45 59.00 W
Frequency: 567.25000 MHz ERP: 11.2000 kW
Path: 2.0727 mi; Azimuth 332.6535
Step: 0.1000 mi; Effective Earth Curvature: 1.333
Topo Data: 3-second
Interpolation: FCC Interpolation (4 points)
Longley-Rice: LR Defaults
TX Site MSL adjusted to: 347.92 ft
TX Ant: 1010.24ft MSL (Site 347.92ft + 662.32ftAGL)
RX Site MSL adjusted to: 344.49 ft
RX Ant: 399.49ft MSL (Site 344.49ft + 55.00ftAGL)
Azimuth: 332.653
TX Antenna Gain: Az 0.00 dB; El 0.00 dB (angle = -3.194)
Free Space Field: (11.200 kW @ 2.073 mi)
106.95 dBu
Free Space Loss: 93.71 dB (between dipoles)
Additional Estimated transmission loss :10.12 dB
Line-of-sight path
LR Mode: 11
Polarization: H
Surface Refrac: 0.00(300.90)
Permittivity: 15.00 Conductivity: 0.0050
Climate: Continental Temperate
Confidence: 90.00 Reliability: 90.00
Path terrain Delta-H: 68.11 ft
Effective antenna heights: 662.32 ft
69.30 ft
Net received field: 69380.09 uV/m
RX Gain: 0.00 dBd
RX Loss: 0.00 dB
RX Input: 73.69 dBuV
45
46
41
46
49
50
January 22, 2007
11:44
KTRE-DT 11 DA: 31 25 9.00 N 94 48 3.00 W
Frequency: 201.00000 MHz ERP: 9.6400 kW
Path: 6.8628 mi; Azimuth 141.5519
Step: 0.1000 mi; Effective Earth Curvature: 1.333
Topo Data: 3-second
Interpolation: FCC Interpolation (4 points)
Longley-Rice: LR Defaults
TX Ant: 931.52ft MSL (Site 411.97ft + 519.55ftAGL)
RX Ant: 400.00ft MSL (Site 320.00ft + 80.00ftAGL)
Azimuth: 141.552
TX Antenna Gain: Az 0.00 dB; El 0.00 dB (angle = -0.840)
Free Space Field: (9.640 kW @ 6.863 mi)
95.90 dBu
Free Space Loss: 95.09 dB (between dipoles)
Additional Estimated transmission loss :9.94 dB
Line-of-sight path
LR Mode: 11
Polarization: H
Surface Refrac: 0.00(300.90)
Permittivity: 15.00 Conductivity: 0.0050
Climate: Continental Temperate
Confidence: 90.00 Reliability: 90.00
Path terrain Delta-H: 127.93 ft
Effective antenna heights: 594.13 ft
80.00 ft
Net received field: 19851.24 uV/m
RX Gain: 0.00 dBd
RX Loss: 0.00 dB
RX Input: 71.85 dBuV
51
January 22, 2007
11:40
KYTX-DT 18: 31 54 20.00 N 95 05 5.00 W
Frequency: 497.00000 MHz ERP: 640.0000 kW
Path: 44.1910 mi; Azimuth 151.5469
Step: 0.1000 mi; Effective Earth Curvature: 1.333
Topo Data: 3-second
Interpolation: FCC Interpolation (4 points)
Longley-Rice: LR Defaults
TX Ant: 1875.83ft MSL (Site 330.95ft + 1544.88ftAGL)
RX Ant: 470.00ft MSL (Site 320.00ft + 150.00ftAGL)
Azimuth: 151.547
TX Antenna Gain: Az 0.00 dB; El 0.00 dB (angle = -0.345)
Free Space Field: (640.000 kW @ 44.191 mi)
97.94 dBu
Free Space Loss: 119.13 dB (between dipoles)
Additional Estimated transmission loss :13.78 dB
Line-of-sight path
LR Mode: 11
Polarization: H
Surface Refrac: 0.00(300.90)
Permittivity: 15.00 Conductivity: 0.0050
Climate: Continental Temperate
Confidence: 90.00 Reliability: 90.00
Path terrain Delta-H: 169.79 ft
Effective antenna heights: 1603.46 ft
192.30 ft
Net received field: 16151.06 uV/m
RX Gain: 0.00 dBd
RX Loss: 0.00 dB
RX Input: 62.18 dBuV
52
January 22, 2007
11:35
KETK-DT 22 DA: 32 03 40.00 N 95 18 50.00 W
Frequency: 521.00000 MHz ERP: 987.6000 kW
Path: 60.4071 mi; Azimuth 145.0491
Step: 0.1000 mi; Effective Earth Curvature: 1.333
Topo Data: 3-second
Interpolation: FCC Interpolation (4 points)
Longley-Rice: LR Defaults
TX Ant: 1947.30ft MSL (Site 580.00ft + 1367.30ftAGL)
RX Ant: 500.00ft MSL (Site 320.00ft + 180.00ftAGL)
Azimuth: 145.049
TX Antenna Gain: Az 0.00 dB; El 0.00 dB (angle = -0.260)
Free Space Field: (987.600 kW @ 60.407 mi)
97.11 dBu
Free Space Loss: 122.26 dB (between dipoles)
Additional Estimated transmission loss :28.58 dB
Line-of-sight path
LR Mode: 11
Polarization: H
Surface Refrac: 0.00(300.90)
Permittivity: 15.00 Conductivity: 0.0050
Climate: Continental Temperate
Confidence: 90.00 Reliability: 90.00
Path terrain Delta-H: 281.36 ft
Effective antenna heights: 1412.98 ft
271.50 ft
Net received field: 2669.90 uV/m
RX Gain: 0.00 dBd
RX Loss: 0.00 dB
RX Input: 46.14 dBuV
53
January 22, 2007
11:47
KFXL TX 30 DA: 31 21 55.00 N 94 45 59.00 W
Frequency: 567.25000 MHz ERP: 11.2000 kW
Path: 2.7823 mi; Azimuth 126.7072
Step: 0.1000 mi; Effective Earth Curvature: 1.333
Topo Data: 3-second
Interpolation: FCC Interpolation (4 points)
Longley-Rice: LR Defaults
TX Site MSL adjusted to: 347.92 ft
TX Ant: 1010.24ft MSL (Site 347.92ft + 662.32ftAGL)
RX Ant: 370.00ft MSL (Site 320.00ft + 50.00ftAGL)
Azimuth: 126.707
TX Antenna Gain: Az 0.00 dB; El 0.00 dB (angle = -2.495)
Free Space Field: (11.200 kW @ 2.782 mi)
104.39 dBu
Free Space Loss: 96.26 dB (between dipoles)
Additional Estimated transmission loss :10.09 dB
Line-of-sight path
LR Mode: 11
Polarization: H
Surface Refrac: 0.00(300.90)
Permittivity: 15.00 Conductivity: 0.0050
Climate: Continental Temperate
Confidence: 90.00 Reliability: 90.00
Path terrain Delta-H: 52.96 ft
Effective antenna heights: 662.32 ft
79.98 ft
Net received field: 51905.41 uV/m
RX Gain: 0.00 dBd
RX Loss: 0.00 dB
RX Input: 71.17 dBuV
54
January 24, 2007
10:58
KFXK-DT 31 DA: 32 15 35.00 N 94 57 2.00 W
Frequency: 575.00000 MHz ERP: 1000.0000 kW
Path: 64.6231 mi; Azimuth 168.2852
Step: 0.1000 mi; Effective Earth Curvature: 1.333
Topo Data: 3-second
Interpolation: FCC Interpolation (4 points)
Longley-Rice: LR Defaults
TX Ant: 1630.20ft MSL (Site 511.02ft + 1119.18ftAGL)
RX Ant: 500.00ft MSL (Site 320.00ft + 180.00ftAGL)
Azimuth: 168.285
TX Antenna Gain: Az 0.00 dB; El 0.00 dB (angle = -0.190)
Free Space Field: (1000.000 kW @ 64.623 mi)
96.58 dBu
Free Space Loss: 123.70 dB (between dipoles)
Additional Estimated transmission loss :43.51 dB
Single-horizon path Diffraction
LR Mode: 11
Polarization: H
Surface Refrac: 0.00(300.90)
Permittivity: 15.00 Conductivity: 0.0050
Climate: Continental Temperate
Confidence: 90.00 Reliability: 90.00
Path terrain Delta-H: 244.07 ft
Effective antenna heights: 1234.82 ft
244.39 ft
Net received field: 450.31 uV/m
RX Gain: 0.00 dBd
RX Loss: 0.00 dB
RX Input: 29.83 dBuV
55
Desired Analog and Digital Stations
Call
Letter
KTRE
KYTX
KETK
KFXK
Service Channel Pattern
DT
DT
DT
DT
KFXL-LP TX
11
18
22
31
Offset
(KHz)
Standard
Freq.
(MHz)
Actual
Freq.
(MHz) TV Status
DA
ND
DA
DA
0
0
0
0
201.00
497.00
521.00
575.00
201.00
497.00
521.00
575.00
LIC
CP
CP
CP
30 DA
0
567.25
567.25 LIC
City of License
LUFKIN
NACOGDOCHES
JACKSONVILLE
LONGVIEW
LUFKIN
Directional
ERP
(kW)
HATT
(feet)
9.64 669.12
640 1498.96
987.60 1504.86
979.00 1184.08
11.20
0.00
Tower Site
Antenna
Ground
Height
Elevation
Above Mean Above Mean
Sea Level
Sea Level
(feet)
(feet)
411.97
330.95
580.56
511.02
0.00
931.52
1875.83
1947.34
1630.16
Latitude
Longitude
N
N
N
N
31 25
9W
31 54 20 W
32
3 40 W
32 15 35 W
94 48
95
5
95 18
94 57
1010.24 N
31 21 55 W
94 45
Receive Site-D,USA N 55°55' 55" W 55°55' 55"
Ground Elevation- 320 feet AMSL
56
Desired Analog and Digital Stations (cont.)
Call
Letter
Receive Site Receive Site
Broadcaster
to
to
Broadcaster Broadcaster to Receive
Site Azimuth Rx Input
Azimuth
Distance
Channel
(deg)
(dBuV)
(deg)
(Mi)
Dipole
Level
(dBmv)
RX Ant. RX Ant.
Antenna Antenna Model Gain
Gain
Number
(dbd)
(dbi)
Number
Antenna
Terminal
Level
(dbmv)
RX Ant.
Height
AGL*
(Ft.)
1/2" Transmission
Line Loss
per 100' @
Freq.
(db)
Transmission
Line
Loss**
(db)
Building
Entrance
Level
(dbmv)
KTRE
KYTX
KETK
KFXK
11
18
22
31
6.86
44.19
60.4
64.62
321.59
331.73
325.36
348.4
158.48
151.73
145.36
168.40
71.85
62.18
46.14
29.83
11.85
2.18
-13.86
-30.17
4
3
1
2
WL7-13/S
WL14-35/S
WL14-35/DQ
WL14-35/DQ
11.50
14.85
17.00
17.00
9.35
12.70
14.85
14.85
21.20
14.88
0.99
-15.32
80.00
150.00
178.00
172.00
1.03
1.64
1.69
1.78
0.93
2.62
3.18
3.24
20.27
12.26
-2.19
-18.56
KFXL-LP
30
2.78
306.73
126.73
71.17
11.17
5
WL14-35/S
11.00
8.85
20.02
50.00
1.78
1.07
18.95
* Antenna height is center mounting height.
** Transmission Line Loss includes an extra 10 feet worth of loss to account for building entrance.
Demodulator inputs should be attenuated to match manufacturer suggested levels.
Receive Site- D USA N 55°55' 55" W 55°55' 55"
Ground Elevation- 320 feet AMSL
57
Undesired Co-Channel Stations
Call Letter
Service
Channel
Pattern
Offset
(Khz)
Actual
Freq.
(MHz)
TV
Status
City of License
State
ERP
(kW)
Antenna
Height
Above Mean
Sea Level
(feet)
Latitude
Longitude
KAQY
KHOU-TV
KTVT
TV
TV
TV
11
11
11
DA
ND
ND
10
10
-10
199.26 LIC
199.26 LIC
199.24 LIC
COLUMBIA
HOUSTON
FORT WORTH
LA
TX
TX
316
316
316
1922.1 N
2007.4 N
2343.6 N
32
5 42 W
29 33 40 W
32 34 43 W
92 10 34
95 30
4
96 57 12
KLTL-TV
KLRU
KTXA
TV
TV
DT
18
18
18
ND
DA
DA
-10
10
0
495.24 LIC
495.26 LIC
497.00 LIC
LAKE CHARLES
AUSTIN
FORT WORTH
LA
TX
TX
1260
1860
220
1056.2 N
1882.7 N
2420.6 N
30 23 59 W
30 19 20 W
32 32 35 W
93
0 10
97 48 10
96 57 32
KLTJ
KUMY-LP
KLRU
TV
TX
DT
22
22
22
DA
DA
ND
0
10
0
519.25 LIC
519.26 LIC
521.00 LIC
GALVESTON
TX
BEAUMONT-ORANTX
AUSTIN
TX
5000
138.2
700
1869.6 N
361.1 N
1959.1 N
29 17 56 W
30
2
9W
30 19 19 W
95 14 11
94
8 31
97 48 12
KHTX-LP
KVHP
KMPX
TX
DT
DT
30
30
30
ND
DA
DA
-10
0
0
573.25 LIC
575.00 CP
575.00 LIC
HUNTSVILLE
LAKE CHARLES
DECATUR
TX
LA
TX
8.83
1000
1000
797.0 N
1059.4 N
2412.4 N
30 42 13 W
30 17 26 W
32 35 19 W
95 28 32
93 34 35
96 58
5
KLAX-TV
K31GL
KHOU-TV
TV
TX
DT
31
31
31
ND
DA
ND
10
10
0
567.26 LIC
567.26 LIC
569.00 LIC
ALEXANDRIA
DE SOTO
HOUSTON
LA
TX
TX
1290
150
759
1253.0 N
1906.3 N
1945.0 N
31 33 54 W
32 35 21 W
29 33 40 W
92 33
0
96 58 12
95 30
4
Receive Site- D USA N 55°55' 55" W 55°55' 55"
Ground Elevation- 320 feet AMSL
58
Undesired Co-Channel Stations (cont.)
Receive Site Receive Site
Broadcaster Co-Channel
to
to
Intercept
Broadcaster Broadcaster to Receive
Angle
Site Azimuth
Azimuth
Distance
(degrees)
(deg)
(deg)
(Mi)
Call Letter Channel
Rx Input
(dBuV)
Dipole
Level
(dBmv)
Antenna
Number
Antenna
Model
Number
Antenna
RX Ant. RX Ant. Terminal
Level
Gain
Gain
(dbmv)
(dbd)
(dbi)
CoChannel
Ratio
(-db)
KAQY
KHOU-TV
KTVT
11
11
11
159.05
130.99
156.04
70.19
200.71
303.84
250.19
20.71
123.84
108.60
120.88
17.75
-3.80
3.54
3.77
-63.80
-56.46
-56.23
4
4
4
WL7-13/S
WL7-13/S
WL7-13/S
-12.00
-12.00
10.00
-14.15
-14.15
7.85
-77.95
-70.61
-48.38
99.15
91.81
69.58
KLTL-TV
KLRU
KTXA
18
18
18
121.34
195.77
155.01
121.99
249.69
303.01
301.99
69.69
123.01
150.26
82.04
28.72
-2.08
-5.11
-9.23
-62.08
-65.11
-69.23
3
3
3
WL14-35/S
WL14-35/S
WL14-35/S
-14.00
-18.00
8.00
-16.15
-20.15
5.85
-78.23
-85.26
-63.38
93.11
100.14
78.26
KLTJ
KUMY-LP
KLRU
22
22
22
143.91
96.46
195.81
192.24
158.72
249.68
12.24
338.72
69.68
133.12
166.64
75.68
-2.77
-6.67
-9.94
-62.77
-66.67
-69.94
1
1
1
WL14-35/DQ
WL14-35/DQ
WL14-35/DQ
-18.00
-14.50
-18.00
-20.15
-16.65
-20.15
-82.92
-83.32
-90.09
83.91
84.31
91.08
KHTX-LP
KVHP
KMPX
30
30
30
62.39
99.66
157.13
225.31
136.42
303.88
45.31
316.42
123.88
81.42
170.31
2.85
12.91
7.47
-4.17
-47.09
-52.53
-64.17
5
5
5
WL14-35/S
WL14-35/S
WL14-35/S
-15.50
9.50
11.00
-17.65
7.35
8.85
-64.74
-45.18
-55.32
84.76
65.20
75.34
KLAX-TV
K31GL
KHOU-TV
31
31
31
129.6
157.25
130.99
82.56
303.87
200.71
262.56
123.87
20.71
94.16
44.53
147.69
-1.15
-14.10
-5.76
-61.15
-74.10
-65.76
2
2
2
WL14-35/DQ
WL14-35/DQ
WL14-35/DQ
-12.00
-12.00
-12.00
-14.15
-14.15
-14.15
-75.30
-88.25
-79.91
59.98
72.93
64.59
Receive Site- C USA N 55°55' 55" W 55°55' 55"
Ground Elevation- 320 feet AMSL
59
Stations
Desired
Antenna to Co- Co-channel
angle
Terminal channel
Ratio
difference
Level
(db)
(degrees)
(dbmv)
Type
KTRE
Desired
21.20
-
-
KAQY
Undesired
-77.95
99.15
108.60
KHOU
Undesired
-70.61
91.81
120.88
Undesired
-48.38
69.58
17.75
KTVT
Undesired
Undesired
Undesired
Undesired
Dip o le L e v e l
1 1 .8 5
d b mv
A n t e n n a G a in
9 .3 5
dbd
P r e - a m p G a in
A n te n n a T e r m L e ve l
0 .0 0
dbd
2 1 .2 0
d b mv
T r a n s m is s io n L in e L o s s
L e n g th
Loss
Bu ild in g In p u t L e v e l
9 0 .0 0
1 .0 3
feet
d b / 1 0 0 fe e t @ 2 0 1 M
0 .9 3
db
2 0 .2 7
d b mv
60
Stations
Desired
Antenna to Co- Co-channel
angle
Terminal channel
Ratio
difference
Level
(db)
(degrees)
(dbmv)
Type
KYTX
Desired
11.03
-
-
KLTL
Undesired
-78.23
89.26
150.26
KLRU
Undesired
-85.26
96.29
82.04
Undesired
-63.38
74.41
28.72
KTXA
Undesired
Undesired
Undesired
Undesired
Dip o le L e v e l
2 .1 8
d b mv
A n t e n n a G a in
8 .8 5
dbd
P r e - a m p G a in
A n te n n a T e r m L e ve l
0 .0 0
dbd
1 1 .0 3
d b mv
T r a n s m is s io n L in e L o s s
L e n g th
Loss
Bu ild in g In p u t L e v e l
1 6 0 .0 0
1 .6 4
feet
d b / 1 0 0 fe e t @ 4 9 7 M
2 .6 2
db
8 .4 1
d b mv
61
Stations
Desired
Antenna to Co- Co-channel
angle
Terminal channel
Ratio
difference
Level
(db)
(degrees)
(dbmv)
Type
KETK
Desired
0.99
-
-
KLTJ
Undesired
-82.92
83.91
133.12
KUMY
Undesired
-83.32
84.31
166.64
Undesired
-90.09
91.08
75.68
KLRU
Undesired
Undesired
Undesired
Undesired
Dip o le L e v e l
- 1 3 .8 6
d b mv
A n t e n n a G a in
1 4 .8 5
dbd
P r e - a m p G a in
0 .0 0
dbd
A n te n n a T e r m L e ve l
0 .9 9
d b mv
T r a n s m is s io n L in e L o s s
L e n g th
Loss
Bu ild in g In p u t L e v e l
1 9 0 .0 0
1 .6 9
feet
d b /1 0 0 f e e t @ 5 2 1 MHz
3 .2 1
db
- 2 .2 2
d b mv
62
Stations
Desired
Antenna to Co- Co-channel
angle
Terminal channel
Ratio
difference
Level
(db)
(degrees)
(dbmv)
Type
KFXL
Desired
20.03
-
-
KHTX
Undesired
-64.74
84.77
81.42
KVHP
Undesired
-45.18
65.21
170.31
Undesired
-55.32
75.35
2.85
KMPX
Undesired
Undesired
Undesired
Undesired
Dip o le L e v e l
1 1 .1 7
d b mv
A n t e n n a G a in
8 .8 5
dbd
P r e - a m p G a in
A n te n n a T e r m L e ve l
0 .0 0
dbd
2 0 .0 2
d b mv
T r a n s m is s io n L in e L o s s
L e n g th
Loss
Bu ild in g In p u t L e v e l
6 0 .0 0
1 .7 8
feet
d b / 1 0 0 fe e t @ 5 7 3 M
1 .0 7
db
1 8 .9 5
d b mv
63
Stations
Desired
Antenna to Co- Co-channel
angle
Terminal channel
Ratio
difference
Level
(db)
(degrees)
(dbmv)
Type
KFXK
Desired
-15.32
-
-
KLAX
Undesired
-75.30
59.98
94.16
K31GL Undesired
-88.25
72.93
44.53
KHOU
-79.91
64.59
147.69
Undesired
Undesired
Undesired
Undesired
Undesired
Dip o le L e v e l
- 3 0 .1 7
d b mv
A n t e n n a G a in
1 4 .8 5
dbd
P r e - a m p G a in
A n te n n a T e r m L e ve l
0 .0 0
dbd
- 1 5 .3 2
d b mv
T r a n s m is s io n L in e L o s s
L e n g th
Loss
Bu ild in g In p u t L e v e l
1 8 2 .0 0
1 .9 4
feet
d b /1 0 0 f e e t @ 5 6 9 MHz
3 .5 3
db
- 1 8 .8 5
d b mv
64
Antenna Model Number Chart- Generic CO Tower Site
Call
Letter
Antenna
Channel Number
Antenna
Manufacturer
Antenna Model
Number
Antenna Description
Azimuth
(Degrees)
Mounting
Height
(Feet)
Wind & Ice Loading¹
Boom
Length
(inches)
KETK
KFXK
KYTX
KTRE
KFXL-LP
22
31
18
11
30
1
2
3
4
5
Wade
Wade
Wade
Wade
Wade
WL 14-35/DQ
WL 14-35/DQ
WL 14-35/S
WL 7-13/S
WL 14-35/S
UHF Low Band Log Periodic- Quad
UHF Low Band Log Periodic- Quad
UHF Low Band Log Periodic
VHF High Band Log Periodic
UHF Low Band Log Periodic
325.36
348.40
331.73
321.59
306.73
178
172
150
80
50
36.25
36.25
36.25
96
36.25
Weight
(lbs)
Wind Load
(lbs)
No Ice
1"
Radial
Ice
No Ice*
85
85
5
25
5
204
204
30
140
30
80
80
15
60
15
Wind Torque
(Ft-lbs)
1" Radial
Ice*
No Ice**
90
90
17
60
17
135
135
25
327
25
1"
Radial
Ice**
120
120
23
235
23
Note: Special bracketing may be needed for certain antenna models depending on the final tower specifications.
Each antenna (6) will also need one piece of PIII-500 Jacketed Coax (or equivalent) as transmission line, run from equipment to antenna's mounting height.
* Wind Speed: 100 MPH
** Wind Speed: 50 MPH
Receive Site- C USA N 55°55' 55" W 55°55' 55"
Ground Elevation- 320 feet AMSL
65
66
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