Licensee (Owner): CBS BROADCASTING INC. (CBS Corporation)
Service Designation: DTX Digital Auxiliary Facility
Channel: 12   204 - 210 MHz Licensed 
File Number: 0000189452     Facility ID Number: 9617
Application ID Number: 25076ff37fc69b3c017fe51fac0c38ce
CDBS Application ID: 2045403

Location: John Hancock Tower (IL)
41°	53'	56.1"	N	(41.898917)	Latitude
87°	37'	23.2"	W	(-87.623111)	Longitude (NAD83)

Polarization: Elliptical (E)	Horizontal	Vertical
Effective Radiated Power (ERP):	22.9	18.3	kW ERP
TV Zone: 1	Feet	Meters
Antenna Height Above Average Terrain:	1370'	417.7m
Antenna Height Above Ground Level:	1367'	416.7m
Antenna Height Above Mean Sea Level:	1959'	597.4m

6.52 kW TPO - 0.96 dB line loss + 6.42 dB antenna gain = 22.9 kW ERP

8.14 dBk TPO - 0.96 dB line loss + 6.42 dB antenna gain = 13.6 dBk ERP

Directional	Antenna ID No.: 1009481	Pattern Rotation: 0°
Elec. Beam Tilt: 2°
Antenna Make: Dielectric	Antenna Model: TLS-V4M/VP-R
Relative Field values for directional antenna		Relative Field polar plot
Relative field values do not include any pattern rotation that may be indicated above.

0°  0.306      10°  0.276      20°  0.303      30°  0.339      40°  0.353      50°  0.339	60°  0.303      70°  0.276      80°  0.306      90°  0.405    100°  0.539    110°  0.679	120°  0.804    130°  0.901    140°  0.965    150°  0.995    160°  0.998    170°  0.983	180°  0.959    190°  0.936    200°  0.919    210°  0.909    220°  0.905    230°  0.909	240°  0.919    250°  0.936    260°  0.959    270°  0.983    280°  0.998    290°  0.995	300°  0.965    310°  0.901    320°  0.804    330°  0.679    340°  0.539    350°  0.405
155°  1.000	283°  1.000

ASRN:	1009012   ULS Data   Other Stations on Tower
Pop:	9,788,688
Query:	RECNet	FCCInfo	Station Index	FCC TV Query
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Area:	FCC Service Contour   Longley-Rice Coverage Map
ULS:	Related facilities in ULS

Licensee (Owner): CBS BROADCASTING INC. (CBS Corporation)
Service Designation: DTX Digital Auxiliary Facility
Channel: 12   204 - 210 MHz Licensed 
File Number: 0000217825     Facility ID Number: 9617
Application ID Number: 25076f9188ea85960189404dce7326b7
CDBS Application ID: 2052252

Location: Willis Tower (IL)
41°	52'	44.1"	N	(41.878917)	Latitude
87°	38'	10.2"	W	(-87.636167)	Longitude (NAD83)

Polarization: Horizontal (H)	Horizontal	Vertical
Effective Radiated Power (ERP):	14		kW ERP
TV Zone: 1	Feet	Meters
Antenna Height Above Average Terrain:	1522'	464m
Antenna Height Above Ground Level:	1519'	463.1m
Antenna Height Above Mean Sea Level:	2114'	644.5m

3.82 kW TPO - 0.63 dB line loss + 6.27 dB antenna gain = 14 kW ERP

5.82 dBk TPO - 0.63 dB line loss + 6.27 dB antenna gain = 11.46 dBk ERP

Directional	Antenna ID No.: 1010873	Pattern Rotation: 0°
Antenna Make: RCA	Antenna Model: TBF-2AH (SPECIAL)
Relative Field values for directional antenna		Relative Field polar plot
Relative field values do not include any pattern rotation that may be indicated above.

0°  0.635      10°  0.460      20°  0.300      30°  0.200      40°  0.150      50°  0.110

60°  0.100      70°  0.110      80°  0.150      90°  0.200    100°  0.300    110°  0.460

120°  0.625    130°  0.775    140°  0.890    150°  0.970    160°  1.000    170°  1.000

180°  0.960    190°  0.870    200°  0.740    210°  0.620    220°  0.555    230°  0.560

240°  0.570    250°  0.560    260°  0.555    270°  0.620    280°  0.740    290°  0.870

300°  0.960    310°  1.000    320°  1.000    330°  0.975    340°  0.900    350°  0.780

ASRN:	1032959   ULS Data   Other Stations on Tower
Pop:	9,837,099
Query:	RECNet	FCCInfo	Station Index	FCC TV Query
LMS:	LMS Query	LMS Application
CDBS:	Station Info	Application Info	Mailing Address	Assignments and Transfers
	Application List	Call Sign Changes	Ownership Info	EEO Filings
	Correspondence for WBBM-TV		Correspondence for 0000217825
Area:	FCC Service Contour   Longley-Rice Coverage Map
ULS:	Related facilities in ULS

Licensee (Owner): CBS BROADCASTING INC. (CBS Corporation)
Service Designation: DTV Full Service Digital TV Station
Channel: 12   204 - 210 MHz Licensed 
File Number: 0000234857     Facility ID Number: 9617
Application ID Number: 25076ff38d31a332018d3cace56b1eff
CDBS Application ID: 2053924

Location: Willis Tower (IL)
41°	52'	44"	N	(41.878889)	Latitude
87°	38'	8"	W	(-87.635556)	Longitude (NAD83)

Polarization: Horizontal (H)	Horizontal	Vertical
Effective Radiated Power (ERP):	10.9		kW ERP
TV Zone: 1	Feet	Meters
Antenna Height Above Average Terrain:	1641'	500.4m
Antenna Height Above Ground Level:	1635'	498.6m
Antenna Height Above Mean Sea Level:	2230'	680m

2.55 kW TPO - 0.69 dB line loss + 6.99 dB antenna gain = 10.9 kW ERP

4.07 dBk TPO - 0.69 dB line loss + 6.99 dB antenna gain = 10.37 dBk ERP

Non-Directional	Antenna ID No.: 1002644	Pattern Rotation: 0°
Elec. Beam Tilt: 1°
Antenna Make: HAR	Antenna Model: TAD-5H

ASRN:	1032960   ULS Data   Other Stations on Tower
Pop:	10,018,037
Query:	RECNet	FCCInfo	Station Index	FCC TV Query
LMS:	LMS Query	LMS Application
CDBS:	Station Info	Application Info	Mailing Address	Assignments and Transfers
	Application List	Call Sign Changes	Ownership Info	EEO Filings
	Correspondence for WBBM-TV		Correspondence for 0000234857
Area:	FCC Service Contour   Longley-Rice Coverage Map
ULS:	Related facilities in ULS

Licensee (Owner): CBS BROADCASTING INC. (CBS Corporation)
Service Designation: DTV Full Service Digital TV Station
Channel: 12   204 - 210 MHz Construction Permit (Expires 01/30/2026) 
File Number: 0000249867     Facility ID Number: 9617
Application ID Number: 25076ff3905469b40190978405163e97

Location: Willis Tower (IL)
41°	52'	44"	N	(41.878889)	Latitude
87°	38'	8"	W	(-87.635556)	Longitude (NAD83)

Polarization: Horizontal (H)	Horizontal	Vertical
Effective Radiated Power (ERP):	29.5		kW ERP
TV Zone: 1	Feet	Meters
Antenna Height Above Average Terrain:	1641'	500.4m
Antenna Height Above Ground Level:	1635'	498.6m
Antenna Height Above Mean Sea Level:	2230'	680m

Non-Directional	Antenna ID No.: 1011902	Pattern Rotation: 0°
Elec. Beam Tilt: 1°
Antenna Make: Harris	Antenna Model: TAD-5H

ASRN:	1032960   ULS Data   Other Stations on Tower
Pop:	10,474,184
Query:	RECNet	FCCInfo	Station Index	FCC TV Query
LMS:	LMS Query	LMS Application
CDBS:	Station Info	Application Info	Mailing Address	Assignments and Transfers
	Application List	Call Sign Changes	Ownership Info	EEO Filings
	Correspondence for WBBM-TV		Correspondence for 0000249867
Area:	FCC Service Contour   Longley-Rice Coverage Map
ULS:	Related facilities in ULS