Accepted/FUed
Federal Communications Commission
Washington, D. C. 20554

Approved by OM
3060-0627
Expires 01131198

APR -32014

FOR
FCC
USE
ONLY

FCC Office of the Secretary

FCC 302-AM
APPLICATION FOR AM

pjy

BROADCAST STATION LICENSE

FOR COM ISSION USE ONLY

(Please read instructions before filling out form.

FILE NO//,t()

SECTION I - APPLICANT FEE INFORMATION
1. PAYOR NAME (Last, First, Middle Initial)

CAPSTAR TX LLC
MAILING ADDRESS (Line 1) (Maximum 35 characters)
2625 S MEMORIAL DRIVE
MAILING ADDRESS (Line 2) (Maximum 35 characters)
SUITE A

CITY

STATE OR COUNTRY (if foreign address)
OK

TULSA

CALL LETTERS
KFIV

TELEPHONE NUMBER (include area code)
918-664-4581

ZIP CODE
74129

OTHER FCC IDENTIFIER (If applicable)
12959

2. A. Is a fee submitted with this application?

Yes

B. If No, indicate reason for fee exemption (see 47 C.F.R. Section

Elil

Governmental Entity

L..]

Other (Please expFain):

Noncommercial educational licensee

C. If Yes, provide the following information:
Enter in Column (A) the correct Fee Type Code for the service you are applying for. Fee Type Codes may be found in the 'Mass Media Services
Fee Filing Guide." Column (B) lists the Fee Multiple applicable for this application. Enter fee amount due in Column (C).
(A)

(B)

FEE TYPE

FEE MULTIPLE

coq

COl IJMN (A)

MIM

oOO I

FOR FCC USE ONLY

$ 635.00

To be used only when you are requesting concurrent actions which result in a requirement to list more than one Fee Type Code.
(A)

IM0R

(B)

(C)

$730.00

IoHoH

ADD ALL AMOUNTS SHO\NN IN COLUMN C,
AND ENTER THE TOTAL HERE.
THIS AMOUNT SHOULD EQUAL YOUR ENCLOSED
REMITTANCE.

TOTAL AMOUNT
REMITTED WITH THIS
APPI I('.ATIflN

FOR FCC USE ONLY

1,365.00

FCC 302-AM
August 1995

SECTION II - APPLICANT INFORMATION
1. NAME OF APPLICANT
CAPSTAR TX LLC

MAILING ADDRESS
2625 S MEMORIAL DRIVE, SUITE A
CI1Y

STATE

TULSA

ZIP CODE
74129

2. This application is for:
Commercial

jJ Noncommercial

EZJ AM Directional
Call letters

Community of License

El AM Non-Directional

Construction Permit File No. Modification of Construction
Permit File No(s).

3. Is the station now operating pursuant to automatic program test authority in
accordance with 47 C.F.R. Section 73.1620?

Expiration Date of Last
Construction Permit

Eli Yes El

Exhibit No.

If No, explain in an Exhibit.

_____________

4. Have all the terms, conditions, and obligations set forth in the above described
construction permit been fully met?

LIII Yes LII
_____________

If No, state exceptions in an Exhibit.

_____________

Exhibit No.

5. Apart from the changes already reported, has any cause or circumstance arisen since
the grant of the underlying construction permit which would result in any statement or
representation contained in the construction permit application to be now incorrect?

LII Yes El

Exhibit No.

If Yes, explain in an Exhibit.
6. Has the permittee filed its Ownership Report (FCC Form 323) or ownership
certification in accordance with 47 C.F.R. Section 73.3615(b)?

____________

Yes El

Does not apply
If No, explain in an Exhibit.

7. Has an adverse finding been made or an adverse final action been taken by any court
or administrative body with respect to the applicant or parties to the application in a civil or
criminal proceeding, brought under the provisions of any law relating to the following: any
felony; mass media related antitrust or unfair competition; fraudulent statements to
another governmental unit; or discrimination?
If the answer is Yes, attach as an Exhibit a full disclosure of the persons and matters
involved, including an identification of the court or administrative body and the proceeding
(by dates and file numbers), and the disposition of the litigation. Where the requisite
information has been earlier disclosed in connection with another application or as
required by 47 U.S.C. Section 1.65(c), the applicant need only provide: (i) an identification
of that previous submission by reference to the file number in the case of an application,
the call letters of the station regarding which the application or Section 1.65 information
was filed, and the date of filing; and (ii) the disposition of the previously reported matter.
cc 302-AM (Page 2)
August 1995

Exhibit No.

Li Yes

Exhibit No.

8. Does the applicant, or any party to the application, have a petition on file to migrate to
the expanded band (1605-1705 kHz) or a permit or license either in the existing band or
expanded band that is held in combination (pursuant to the 5 year holding period allowed)
with the AM facility proposed to be modified herein?
If Yes, provide particulars as an Exhibit.

Yes

Exhibit No.

The APPLICANT hereby waives any claim to the use of any particular frequency or of the electromagnetic spectrum as
against the regulatory power of the United States because use of the same, whether by license or otherwise, and
requests and authorization in accordance with this application. (See Section 304 of the Communications Act of 1934, as
amended).
The APPLICANT acknowledges that all the statements made in this application and attached exhibits are considered
material representations and that all the exhibits are a material part hereof and are incorporated herein as set out in full in
CERTIFICATION

1. By checking Yes, the applicant certifies, that, in the case of an individual applicant, he
or she is not subject to a denial of federal benefits that includes FCC benefits pursuant
to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. Section 862, or, in the
case of a non-individual applicant (e.g., corporation, partnership or other unincorporated
association), no party to the application is subject to a denial of federal benefits that
includes FCC benefits pursuant to that section. For the definition of a "party" for these
purposes, see 47 C.F.R. Section 1.2002(b).

Yes

LII No

2. I certify that the statements in this application are true, complete, and correct to the best of my knowledge and belief,
and are made in good faith.
1'

Name

at&e

Stephen G. Davis
Title

Senior Vice President Engineering

Da5

Telephone Number

918-664-4581

WILLFUL FALSE STATEMENTS ON THIS FORM ARE PUNISHABLE BY FINE AND/OR IMPRISONMENT
(U.S. CODE, TITLE 18, SECTION 1001), AND/OR REVOCATION OF ANY STATION LICENSE OR
CONSTRUCTION
FCC NOTICE TO INDIVIDUALS REQUIRED BY THE PRIVACY ACT AND THE PAPERWORK REDUCTION ACT
The solicitation of personal information requested in this application is authorized by the Communications Act of 1934, as amended. The
Commission will use the information provided in this form to determine whether grant of the application is in the public interest. In reaching that
determination, or for law enforcement purposes, it may become necessary to refer personal information contained in this form to another
government agency. In addition, all information provided in this form will be available for public inspection. If information requested on the form is
not provided, the application may be retumed without action having been taken upon it or its processing may be delayed while a request is made to
provide the missing information. Your response is required to obtain the requested authorization.
Public reporting burden for this collection of information is estimated to average 639 hours and 53 minutes per response, including the time for
reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of
information. Comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the
burden, can be sent to the Federal Communications Commission, Records Management Branch, Papetwork Reduction Project (3060-0627),
Washington, D. C. 20554. Do NOT send completed forms to this address.
THE FOREGOING NOTICE IS REQUIRED BY THE PRIVACY ACT OF 1974, P.L. 93-579, DECEMBER 31, 1974, 5 U.S.C. 552a(e)(3), AND THE
PAPERWORK REDUCTION ACT OF 1980, P.L. 96-511, DECEMBER 11, 1980,44 U.S.C. 3507.
FCC 302-AM (Page 3)
August 1995

CTIDN UI -, ICFNSF APPI ICATIDN FN(INFFRfNC DATA
Name of Applicant
Capstar TX LLC

PURPOSE OF AUTHORIZATION APPLIED FOR: (check one)

Station License

Direct Measurement of Power

1. Facilities authorized in construction permit
File No. of Construction Permit Frequency
Call Sign
(if applicable)
I
I (kHz)
KFIV
NA
1 1360
2. Station location
State

______________________________
Power in kilowatts
Night
Dad'

_________________________

Hours of Operation
I

[

unlimited

_____________________________________________________
City or Town
Modesto

3. Transmitter location
State
County

____________________________
Street address
(or other identification)
2313 Sylvan Ave

________________________

City or Town

Modesto
j _Stanislaus

4. Main studio location
County
State

City or Town

j Stanislaus

Modesto

5. Remote control point location (specify only if authorized directional antenna)
City or Town
State
County

____________________________
Street address
(or other identification)
2121 Lancey Dr. Ste. 1

________________________

____________________________
T Strt address
(or other identification)
2121 Lancey Dr. Ste. 1

J Modesto

Stanislaus

6. Has type-approved stereo generating equipment been installed?

Yes

7. Does the sampling system meet the requirements of 47 C.F.R. Section 73.68?

Yes

D No

Not Applicable
Attach as an Exhibit a detailed description of the sampling system as installed.
8. Operating constants:
RF common point or antenna current (in amperes) without
modulation for night system

4.53

_________________________________________________________

RF common point or antenna current (in amperes) without
modulation for day system

9.30

Measured antenna or common point resistance (in ohms) at
operating frequency
Night
Day
50
50
Antenna indications for directional operation
Antenna monitor
Phase reading(s) in degrees
owers
Night
Day
________________________

1 (ASRN 1059690)
2 (ASRN 1059668)
3 (ASRN 1059689)

Exhibit No.
Engineethg Exhibit

0
______________

+158.6

Manufacturer and type of antenna monitor:

Measured antenna or common point reactance (in ohms) at
operating frequency
Day
Night
0
0
____________________________ ____________________________
Antenna monitor sample
Antenna base currents
current ratio(s)
Day
Night
Day
Night
1.000

-1oa.9

1.000

_______________ ______________

0.507

0.914

Potomac Instruments AM1 901 (FCC ID: lJ3Pl 1900)
FCC $02-AM (Page 4)
August 1995

SECTION III Page 2
-

9. Description of antenna system ((f directional antenna is used, the information requested below should be given for each element of
the array. Use separate sheets if necessary.)
Type Radiator

Overall height in meters of
radiator above base

Overall height in meters
above ground (without

Overall height in meters
above ground (include

insulator, or above base, if
grounded.

obstruction lighting)

see attached

describe fully in an
Exhibit.
I Exhibit No. I

JNA

_______________ _______________ _______________

Excitation

see attached

see attached
_____________

If antenna is either top
loaded or sectionalized,

Series

Shunt

Geographic coordinates to nearest second. For directional antenna give coordinates of center of array. For single vertical radiator give
tower location.
North Latitude

West Longitude

120

If not fully described above, attach as an Exhibit further details and dimensions including any other
antenna mounted on tower and associated isolation circuits.

Exhibit No.
Engineenng Exhibit

Also, if necessary for a complete description, attach as an Exhibit a sketch of the details and
dimensions of ground system.

Exhibit No.
NA

10. In what respect, if any, does the apparatus constructed differ from that described in the application for construction permit or in the
permit?

none

____________

11. Give reasons for the change in antenna or common point resistance.
___

'NA

______

__________________________

_______________________

___

I certify that I represent the applicant in the capacity indicated below and that I have examined the foregoing statement of technical
information and that it is true to the best of my knowledge and belief.
Name (Please Print or Type)

Signature (check appropriate box below)

Samuel T. Cox, P.E.

it.

Address (include ZIP Code)

Date

[2625 S. Memorial Drive

_____

Suite A

Tulsa, OK 74129

El
El

3/24/2014
Telephone No. (Include Area Code)

_________________

918-664-4581

. ____
I

Technical Director

Chief Operator

Other (specify)

FCC 302-AM (Page 5)
August 1995

Registered Professional Engineer

Technical Consultant

TOWER SUMMARY

ii
Type Radiator

uniform cross

section, guyed
steel tower

Overall height in meters of
radiator above base
insulator, or above base, if
grounded

77.4 m

Overall height in meters
above ground (without
obstruction lighting)

78.0 m

Overall height in meters
above ground (include
obstruction lighting)

78.9 m

ENGINEERING EXHIBIT
Application for Direct Power Measurement
KFIV (AM)
Modesto, CA
Capstar TX LIC
FID 12959
1360 kHz
DA-2

Table of Contents

Engineering Statement

Description of Radiators

Description of Sampling System

Measured Matrix Impedances

Description of Model

Comparison of Modeled and Measured Matrix Impedances

Modeled Impedances

8-13

Calculated Drive Voltages, Currents and Current Moments

14-21

Calculated Operating Parameters from Modeled Voltages

Measured and Calculated Sampling Line Characteristics

23-24

Sampling Device Calibration

Environmental Statement

Reference Point Data

Engineering Statement
This application is being filed to relicense the existing daytime and nighttime operation of KFIV
(AM) Modesto, CA pursuant to the sections of 47 CFR 73.151 allowing performance verification by
computer modeling and sampling system verification. No changes were made to the ground system or
radiators and they remain as authorized in the current station license BZ-2006OS1OACM. KFIV (AM)
operates using common radiators in a multiplexed configuration with KESP (AM) Modesto, CA Facility ID
11233. No changes were made to the multiplex filters. All KFIV (AM) antenna system measurements
included in this application were made on November 12, 2013 and December 10, 2013 by Mr. Stephen
Minshall and the undersigned unless otherwise noted. Field measurements were conducted by Mr.
Minshall from February 3-4, 2014.
Analysis of the daytime and nighttime antenna systems was performed using a combination of a
method of moments model and a circuit model. The method of moments model was produced using
the computer program Expert Mininec Broadcast Professional version 14.6 by EM Scientific Inc. The
circuit model was produced using the nodal analysis program WCAP Pro version 1.1 by Westberg
Consulting. The impedance of each radiator was measured at the output i-plug of the voltage sampling
unit with the other radiators shorted. The feed system was open circuited at the output J-plug of the
filters. The method of moments models and the circuit models for each radiator were adjusted to
produce the same matrix impedances as those measured.
Once the model was adjusted to match the measured matrix impedances, the array synthesis
module of the computer program was used to calculate the proper base drive voltages to generate the
fields necessary to form the required patterns for daytime and nighttime operation. The daytime and
nighttime antenna systems each utilize only two of the three available radiators. The unused radiator
was detuned for each pattern by terminating it with the appropriate reactance necessary to produce a
current minima at 173 the height above the base.

Samuel T. Cox, P.E.
March 24, 2014

E17523
EXP.

63O-2O15

Description of Radiators
The KFIV (AM) radiators are identical triangular, uniform cross section, guyed towers 126.4
electrical degrees in height with a face width of 45.7 centimeters.
The tower numbering used in this report corresponds to the table below. This convention will
be used throughout this report. The tower numbering as it corresponds to the numbering used in the
theoretical parameters in the CDBS for each pattern is also shown in the table below.

CDBS
jg

ASRN

Face
Width

Electrical
Height

ASRN 1059690

45.7 cm

126.4°

ASRN 1059688

45.7 cm

126.4°

ASRN 1059689

45.7 cm

126.4°

Report
Tower#

CDBS

Description of Sampling System
The sampling system consists of equal lengths of solid outer jacket foam filled coaxial cable
connected to a Kintronic Labs VSU-1 voltage sampling device placed immediately adjacent to and
attached at the base of each radiator. The sampling lines are buried and exposed to similar
environmental conditions. The antenna monitor is a Potomac Instruments AM 1901 (FCC ID: IJ3PI1900)
last calibrated by the manufacturer on 11/23/2011.
Before and after measurements of the KESP (AM) operating parameters and monitoring points
were made in conjunction with the addition of the voltage sampling units. Slight adjustment of the KESP
(AM) feed system readily re-centered the parameters on their licensed values after installation. The
KESP (AM) operating parameters remain within +\- 5% and +\- 3° of their licensed values and the
monitoring points remain safely within their licensed limits.

LICENSED

BEFORE

AFTER

4.65A

4.7A

4.6A

T1 Ratio
T1 Phase
T3 Ratio

0.698
-138.1°
1.000

0.7 10
-138.0°
1.000

0.698
-138.1°
1.000

T3Phase

0°

144° MP
279° MP

38.3 mV/rn
16 mV/rn

6.8 mV/rn
9.6 mV/rn

6.2 mV/rn
9.0 mV/rn

4.65A
1.000
0°
0.960
-153.8°
83.2 mV/m
16.8 mV/m
5.93 mV/rn

4.2A
1.000
0°
0.940
-155.0°
55.5 mV/m
3.5 rnV/m
2.6 mV/rn

4.5A
1.000
0°
0.960
-153.8°
60 mV/m
4.2 mV/rn
3.5 mV/m

Day

Night
lcp

T2 Ratio
T2Phase
T3 Ratio
T3 Phase
68° MP
144° MP
352° MP

Matrix Impedance Measurements
Tower 1 driven with all others shorted

486 +j166 0

Tower 2 driven with all others shorted

582 +j137 0

Tower 3 driven with all others shorted

595 + j118 0

All measurements above made with a Hewlett Packard 8753D vector network analyzer and directional
coupler in a calibrated measurement system.

Description of Model
The overall model of the antenna system consists of two components: the method of moments
model and the circuit model. The method of moments model was adjusted by varying the electrical
height and effective radius of the radiators to produce an impedance at the base node such that when
combined with the circuit model produced an impedance within +/-20 and +1-4% of the measured
matrix resistance and reactance at the measurement point. The modeled electrical heights used fall
within the range of 75-125% of the physical height. The effective radii used fall within the range of 80150% of the radius of a circle with a circumference equal to the sum of the widths of the tower sides.
The circuit model consists of a lumped shunt capacitive reactance combined with the calculated
base impedance produced by the method of moments model. The general form of the circuit model is:

z mom
Z modeled
C thwil

Comparison of Modeled and Measured Matrix lmoedances
'moxn

'inode1ed

'masxed

296.l+j267.5Q

122.0 pF

481.2+j165.0O

332.4+j303.OC^

130.0 pF

576.6+j135.Sc^

332.4+j303.OQ

136.0 pF

584.2+j119.3Q

486+j166

582+j137c2
595+j118

1Model ed impedance at measurement point.
A mathematically insignificant length of
transmission line was inserted into the circuit model at t he measurement point to
allow the program to calculate the impedance.

MoM Calculated Impedance Tower 1 Driven with Other Towers Shorted
C: \Users\ccrsdilstc\Docuxnents\Expert MININEC Broadcast Professional\Work\KFIV2O13\KFIVT1DAOS 12
19-2013
10:40:43
IMPEDANCE
normalization = 50.
freq
resist
react
imped
(KHz)
(ohms)
(ohms)
(ohms)
source = 1; node 1, sector 1
1,360.
296.12
26'7.51
399,06

phase
(deg)

VSWR

Sil
dB

512
dB

42.1

10.832

-1.6083

-5.0936

INPUT FILE

KFIV
GEOMETRY
Wire coordinates in degrees; other di mensions in meters
Environment: perfect ground
wire
1
2
3

caps Distance
none 0
0
none 126.38
126.38
none 126.38
126.38

Angle
0
0
32.
32.
68.
68.

Z
0
133.
0
133.
0
133.

radius
.2183

segs
15

.2183

Number of wires
=
3
current nodes = 45

Individual wires
segment length
radius

ELECTRICAL DESCRIPTION
Frequencies (KHz)
frequency
no. lowest
step
1
1,360.
0
Sources
source node
1
1

sector
1

maximum
wire value
8.86667
1
1
.2183

minimum
wire
value
1
8.86667
1
.2183

no. of segment length (wavelengths)
steps
minimum
maximum
1
.0246296
.0246296

magnitude
1.

phase
0

type
voltage

WCAP - KFIV Tower 1 Base Model

Center Frequency'

.36 MHz

Frequency Range.

^0 kI-4z
0 kFlz

Frequency Step.

WCAP - KFIV Ti BASE MODEL

WCAP OUTPUT AT FREQUENCY: 1.360 MHz
NODE VOLTAGES
Node:
1
508.7061 4
2
Node:
508.7061 4

18.9207° V
18.9207° V

WCAP PART
1-.2
50.00000000

CURRENT IN
1.00 4
-0.O01

CURRENT OUT
1.00 4
-0.000° A

C
R

WCAP PART
0.00012200
2-.O
296.10000000
2-.O

BRANCH VOLTAGE
508.71 4
18.921° V
508.71 4
18.921° V

BRANCH CURRENT
108.921° A
0.53 4
1,27 4
-23.174° A

C
R
Ti

WCAP PART
2-.0
0.00012200
2-.0
296.10000000
1-.2
50.00000000

FROM IM PEDANCE
959.227
0.01 - j
296.10 + j
267.500
481.22 + j
164.953

WCAP PART
1-.2
50.00000000

WCAP INPUT DATA:
1.3600
0.00000000
0.00012200
2
C
0
I
1.00000000
0
1
R
296.10000000
2
0
50.00000000
2
TL
1

TO
0.00
0.00
481.22

IMPE DANCE
+
+
+

j
j
j

0.000
0.000
164.957

VSWR
10.7663

0
0.00000000
267.50000000
100.00000000

0.00010000

0.00000000

MoM Calculated Impedance Tower 2 Driven with Other Towers Shorted
C: \Users\ccrsdilstc\Documents\Expert MININEC Broadcast Professional\Work\KFIV2O13\KFIVT2DAOS 1219-2013
10:45:01
IMPEDANCE
normalization = 50.
freq
resist
react
imped
(KHz)
(ohms)
(ohms)
(ohms)
source = 1; node 16, sector 1
303.02
1,360.
332.35
449.76

phase
(deg)

VSWR

Sli
dB

S12
dB

42.4

12.241

-1.4223

-5.5398

KFIV
GEOMETRY
Wire coordinates in degrees; other dimensions in meters
Environment: perfect ground
wire
1
2
3

caps Distance
none 0
0
none 126.38
126.38
none 126.38
126.38

Number of wires
current no des

Individual wires
segment length
radius

ELECTRICAL DESCRIPTION
Frequencies (KHz)
frequency
no. lowest
step
1
1,360.
0
Sources
source node
1
16

sector
1

Z
0
133.
0
133.
0
133.

Angle
C
C
32.
32.
68.
68.
=

radius
.2183

sags
15

.2183

3
45
maximum
wire value
1
8.86667
1
.2183

minimum
wire
value
1
8.86667
1
.2183

no. of segment length (wavelengths)
steps
minimum
maximum
1
.0246296
.0246296

magnitude
1.

phase
0

type
voltage

WCAP- KFIV Tower 2 Base Model

Center Frequency:

36 MHz

Frequency Range.
Frequency Step:

tO kHz
0 kHz

WCAP - IZFIV T2 BASE MODEL

WCAP OUTPUT AT FREQUENCY: 1.360 MHz
NODE VOLTAGES
Node:
1
592.3991 4Node:
2
592.3991 4

13.2499° V
13.2499° V

WCAP PART
12
50.00000000

CURRENT IN
1.00 4
0.001° A

CURRENT OUT
1.00 4-0.001° A

C
R

WCAP PART
2-.0
0.00013000
2-.0
332.40000000

BRANCH VOLTAGE
592.40 4
13.250° V
592.40 4
13.250° V

BRANCH CURRENT
0.66 4.
103.250° A
1.32 4
-29.101° A

C
R
TL

WCAP PART
2-.0
0.00013000
20
332.40000000
1-.2
50.00000000

FROM IMPEDANCE
0.00 - j
900.198
332.40 + j
303.000
576.63 + j
135.778

WCAP PART
1-.2
50.00000000

WCAP INPUT DATA:
1.3600
0.00000000
C
0.00013000
2
0
I
1.00000000
0
1
332.40000000
2
R
0
TL
50.00000000
1
2

TO
0.00
0.00
576.63

IMPEDANCE
+ j
0.000
+ j
0.000
+ j
135.783

VSWR
12.1766

0
0.00000000
303.00000000
100.00000000

0.00010000

0.00000000

MoM Calculated Impedance Tower 3 Driven with Other Towers Shorted
C: \Users\ccrsdilstc\Docurnents\Expert MININEC Broadcast Professional\Work\KFIV2O13\KFIVT3DAOS 1210:46:51
19-2013
IMPEDANCE
normalization = 50.
freq
resist
react
imped
(ohms)
(ohms)
(NEz)
(ohms)
source = 1; node 31, sector 1
332.35
303.02
449.76
1,360.

phase
(deg)

VSWR

S1l
dB

$12
dB

42.4

12.241

-1.4223

-5.5398

KFIV
GEOMETRY
Wire coordinates in de grees; other di mensions i n meters
Environment: perfect g round
wire
1
2
3

caps Distance
none 0
0
none 126.38
126.38
none 126.38
126.38

Number of wires
current node s

Individual wires
segment length
radius

ELECTRICAL DESCRIPTION
Frequencies (EHz)
frequency
no. lowest
step
1,360.
1
0
Sources
source node
1
31

sector
1

Z
0
133.
0
133.
0
133.

Angle
0
0
32.
32.
68.
68.
=

minimum
wire
value
1
8.86667
1
.2183

no. of
steps
1

magnitude
1.

radius
.2183

sags
15

.2183

maximum
wire value
1
8.86667
1
.2183

segment length (wavelengths)
minimum
maximum
.0246296
.0246296

phase
0

type
voltage

WCAP - KFIV Tower 3 Base Model

Center Frequency

1.36 MHz

Frequency Range

tO kHz

Frequency Step

0 kHz

WCAP - KFIV T3 BASE MODEL

WCAP OUTPUT AT FREQUENCY: 1.360 MHz
NODE VOLTAGES
596.2878 4
Node:
1
596.2878 4.
Node:
2

11.5447° V
11.5447° V

WCAP PART
12
50.00000000

CURRENT IN
1.00 4
-0.001° A

CURRENT OUT
-0.001° A
1.00 4

C
N

WCAP PART
0.00013600
2-.0
2-.0
332.40000000

BRANCH VOLTAGE
596.29 4:
11.545° V
596.29 4:
11.545° V

BRANCH CURRENT
0.69 4
101.545° A
1.33 4
-30.806° A

C
N
TL

WCAP PART
2-.0
0.00013600
20
332.40000000
12
50.00000000

FROM IMPEDANCE
860.483
0.00 - j
332.40 + j
303.000
584.22 + j
119.336

WCAP PART
50.00000000
1-.2

WCAP INPUT DATA:
1.3600
0.00000000
0.00013600
2
0
C
I
1.00000000
0
1
332.40000000
R
2
0
50.00000000
2
TL
1

TO
0.00
0.00
584.22

IMPEDANCE
0.000
+ 3
+ 3
0.000
119.342
+ 3

VSWR
12.1755

0
0.00000000
303.00000000
100.00000000

0.00010000

0.00000000

MoM Calculated Base Drive Voltages and Currents for Day Pattern
The order of the wires in the model and thus the node numbers at the base of
NOTE:
each tower have been modified for analysis of the daytime operation to place the
unused, detuned tower first in the geometry point list. Expert )iriinec Broadcast
Professional v 14.6 produces anomalous results when unused radiators are placed after
driven radiators in the model geometry.
C:\Users\ccrsdilstc\Documents\Expert MININEC Broadcast Professional\Work\KFIV2O13\KFIVDAY 12-19"
11:35:53
2013
MEDIUM WAVE ARRAY SYNTHESIS FROM FIELD RATIOS
Frequency

tower
1
2

1360 KHz

field ratio
magnitude
1.
.345

phase (deg)
0
-91.5

VOLTAGES AND CURRENTS - rms
source voltage
magnitude
node
phase (deg)
73.7
16
1,432.65
726.466
31
324,8
Sum of square of source currents
Total power = 4,000. watts

current
magnitude
3.65139
1.42093
= 30.7033

phase (deg)
18.2
321.9

INPUT FILE
KFIV
GEOMETRY
Wire coordinates in degrees; other dimensions in meters
Environment: perfect ground
wire
1
2
3

caps Distance
none 126.38
126.38
none 0
0
none 126.38
126.38

Angle
68.
68.
0
D
32.
32.

Z
0
133.
0
133.
0
133.

radius
.2183

segs
15

.2183

Number of wires
3
current nodes = 45

Individual wires
segment length
radius

ELECTRICAL DESCRIPTION
Frequencies (KHz(
frequency
no. lowest
step
1
1,360.
0
Sources
source node
1
16
2
31

maximum
wire value
8.86667
1
1
.2183

minimum
wire
value
1
8.86667
.2183
1

sector
1
1

no. of segment length (wavelengths)
steps
minimum
maximum
1
.0246296
.0246296

magnitude
2,026.08
1,027.38

phase
73.7
324.8

type
voltage
voltage

Lumped loads
load
1

node
1

resistance
(ohms)
0

reactance
(ohms)
356.1

inductance
(raN)
0

capacitance passive
(uF)
circuit
0
0

MoM Calculated Current Moments for Day Pattern

C: \Users\ccrsdilstc\Docuxsents\Expert MININEC Broadcast Professional\Work\KFIV2O13\KFIVDAY 12-192013
11:38:25
CtJP.RENT MOMENTS(amp-degrees) rms
1360 KHz
Frequency
Input power = 4,000. watts
wire
1
2
3

magnitude
1.79982
527,081
181.844

phase (deg)
97.4
0.0
268.5

vertical current moment
magnitude
phase (deg)
1.79982
97.4
527.081
0.0
181.844
268.5

Medium wave array vertical current moment (amps-degrees) rms
(Calculation assumes tower wires are grouped together.
The first wire of each group must contain the source.)
tower
1
2

magnitude
527.081
181.844

phase (deg)
0.0
268.5

Normalized to Tower 1
tower
1
2

magnitude
1.000
0.345

phase (deg)
0.0
-91.5

MoM Calculated Base Drive impedances for Day Pattern

C: \Users\ccrsdilstc\Documents\Expert MININEC Broadcast Professional\Work\KFIV2O13\KFIVDAY 12-192013
11:57:48
IMPEDANCE
normalization = 50.
freq
resist
react
imped
(ohms)
(ohms)
(1