2020_07_26_mt-wilson001
Image by Nfrastructure
First, on the left is Antenna Structure Registration 1229046, built in 2003. Details:
Structure Coordinates: 34-13-57.0 N 118-4-27.2 W (NAD 83)
Site Elevation: 1724.7 meters (5658 ft)
Height of Structure: 48.8 meters (160 feet)
Overall Height Above Ground: 74.4 meters (244 feet)
Overall Height Above Mean Sea Level: 1799.1 meters (5903 feet)
The 8-bay antenna is an Electronics Research Inc. SHPXA-8BC-HW-SP, 8sections.5wavelength spacing.
It is a shared auxiliary transmitting antenna for KBIG/104.3 (21kw), KIIS/102.7 (4kw), KOST/103.5 (10kw) and KRRL/92.3 (19kw). All of those have aux antennae elsewhere as well.
The 2-bay side mounted below that may be a 93.9 antenna fromwhen it was KZLA. It’s now (in 2020) KLLI. There is no current (April 2020) license for this one.
If you look here, you’ll see that the new master pole replaces the original 3-bay batwing for KCBS-TV/2: www.flickr.com/photos/infrastructure/42380796240/in/album…
Second, on the right, the tower is Structure Registration Number 1012836: the 960-foot "CBS tower." It was built in 1986 to hold KCBS/2’s circularly polarized antenna aloft, with KCBS/93.1 hanging on the side. Details:
Structure Coordinates: 34-13-55.0 N 118-4-21.0 W (NAD 83)
Site Elevation: 1724.7 meters (5658 ft)
Height of Structure: 274.2 meters (900 feet)
Overall Height Above Ground: 296.4 meters (972 feet)
Overall Height Above Mean Sea Level: 2021.1 meters (6631 feet)
Here’s a list of the antennas on the tower, in decreasing Heights Above Ground (HAG or AGL),
as of 06/08/2020
*Expired licenses. May or may not be gone from the tower.
Extant antennas are, best guess, top to bottom, from the list below,
KDOC-TV 290.2 m (952 ft.)
KCBS-TV 277.4 m (910 ft.)
KCBS-FM 250 m (820 ft.)
KNLA-CD w/KNET-CD 200 m (656 ft.)
KCBS-FM aux 134 m (440 ft.)
KMRZ-LD/KSFV-LD 72 m (236 ft.)
KHIZ-LD 70 m (230 ft.)
KCBS-FM aux 46 m (151 ft.)
These (detailed below) do not quite agree with what I see on the tower. For example, there appears to be only one KCBS-FM aux antenna, and it’s a four bay, rather than the one-bay on the license. There also does not appear to be a second KCBS-FM aux below the KHIZ/2 antenna. In fact there appear to be no broadcast antennas below KHIZ/2.
KDOC-TV/56
Channel 12DT
Status: License
Application Accepted: 03/26/2019
KDOC-TV License Expires: 12/01/2022
Repacking Information:
Pre-Repack Channel: 32
Post-Repack Channel: 12
Post-Repack ERP: 52.3 kW
Phase: 2 Completion Deadline: 4/12/2019
ERP: 110 kW
Polarization: Elliptically polarized
HAAT: 1128 m (3701 ft.)
Electrical Beam Tilt: 1.25 degrees
R/C AGL: 290.2 m (952 ft.)
R/C AMSL: 2014.9 m (6611 ft.)
Directional Antenna – Antenna Make/Model: DIELECTRIC THV-5A12/VP-R C170
Direction: bean-shaped cardioid, southwest
KCBS-TV/2
Channel 31DT
Post-repack Channel 31
Virtual Channel 2
Status: License
Application Accepted: 04/16/2019
KCBS-TV License Expires: 12/01/2022
Repacking Information:
Pre-Repack Channel: 43
Post-Repack Channel: 31
Post-Repack ERP: 426 kW
Phase: 2 Completion Deadline: 4/12/2019
ERP: 485 kW
Polarization: Elliptically polarized
HAAT: 1095.0 m (3593 ft.)
Electrical Beam Tilt: 1.5 degrees
R/C AGL: 277.4 m (910 ft.)
R/C AMSL: 2002.1 m (6569 ft.)
Directional Antenna – Antenna Make/Model: DIELECTRIC TFU-22JBH/VP-R O8
Direction: lima-bean shape, northeast
KCBS-FM
93.1 MHz
Status: License
Application Accepted: 08/18/2010
Application Granted: 08/31/2010
KCBS-FM License Expires: 12/01/2021
Effective Radiated Power: 27.5 kW
Transmitter Output Power: 19.28 kW
Antenna Center HAAT: 1074 m (3524 ft.)
Antenna Center AMSL: 1975 m (6480 ft.)
Antenna Center HAG: 250 m (820 ft.)
Omni-Directional Antenna
Antenna Make/Model: DIELECTRIC DCRM4EFE75RP
KNLA-CD/20
Channel 32DT
Status: License
Application Accepted: 03/26/2019
KNLA-CD License Expires: 12/01/2014
Channel Sharing Guest: KNET-CD, Los Angeles, California
Repacking Information:
Pre-Repack Channel: 50
Post-Repack Channel: 32
Post-Repack ERP: 10.7 kW
Phase: 2 Completion Deadline: 4/12/2019
ERP: 15 kW
Polarization: Circularly polarized
Electrical Beam Tilt: 1.75 degrees
R/C AGL: 200 m (656 ft.)
R/C AMSL: 1924.7 m (6315 ft.)
Emission Mask: Full Service
Omni-Directional Antenna – Antenna Make/Model: Electronics Research Inc. AL8O-32-PME
KNET-CD/25
Channel 32DT
Channel Sharing Host: KNLA-CD, Los Angeles, California
Repacking Information:
Channel 25 was relinquished in the spectrum auction
Status: License
Application Accepted: 05/03/2019
KNET-CD License Expires: 12/01/2022
Other information, same as KNLA-CD, above
R/C AGL: 200 m (656 ft.)
KCBS-FM
93.1 MHz
Application Accepted: 01/17/2007
Application Granted: 04/02/2007
KCBS-FM License Expires: 12/01/2021
Effective Radiated Power: 3.9 kW
Transmitter Output Power: 9.8 kW
Antenna Center HAAT: 946 m (3104 ft.)
Antenna Center AMSL: 1859 m (6099 ft.)
Antenna Center HAG: 134 m (440 ft.)
Omni-Directional Antenna
Antenna Make/Model: Jampro JMPC-1R HD
KMRZ-LD/69
Channel 22DT
Status: License
Application Accepted: 07/24/2017
KMRZ-LD License Expires: 12/01/2022
ERP: 15 kW
Polarization: Horizontally polarized
R/C AGL: 72 m (236 ft.)
R/C AMSL: 1796.7 m (5895 ft.)
Emission Mask: Full Service
Directional Antenna – Antenna Make/Model: Andrew ALP4L1-HSN
(I suspect this station is silent, as of 8/20)
*KMRZ-LD
Channel 22DT
Status: STA Special Temporary Authority
Application Accepted: 09/12/2016
KMRZ-LD License Expires: 09/28/2016
ERP: 8 kW
R/C AGL: 72 m (236 ft.)
R/C AMSL: 1796.7 m (5895 ft.)
Emission Mask: Stringent
Directional Antenna – Antenna Make/Model: SBP UPC-4
Direction: 3-lobe fan, southeast
*KSFV-CD
Channel 22DT
RF spectrum relinquished
in the spectrum auction
Virtual Channel 6
Status: STA Special Temporary Authority
Application Accepted: 04/10/2017
KSFV-CD License Expires: 12/01/2014
ERP: 8 kW
Polarization: Horizontally polarized
R/C AGL: 72 m (236 ft.)
R/C AMSL: 1796.7 m (5895 ft.)
Emission Mask: Stringent
Directional Antenna – Antenna Make/Model: SBP UPC-4
Direction: one lobe, east
*KEDD-LD
Channel 50DT
Status: License
Application Accepted: 10/18/2010
KEDD-LD License Expires: 12/01/2014
ERP: 8 kW
Electrical Beam Tilt: -2 degrees
R/C AGL: 72 m (236 ft.)
R/C AMSL: 1797 m (5896 ft.)
Emission Mask: Stringent
Directional Antenna – Antenna Make/Model: SBP UPC-4
Direction: 3-lobe fan, southwest
KHIZ-LD
Channel 2DT
Status: License
Application Accepted: 05/08/2014
KHIZ-LD License Expires: 12/01/2022
ERP: 3 kW
R/C AGL: 70 m (230 ft.)
R/C AMSL: 0 m
Emission Mask: Full Service
Directional Antenna – Antenna Make/Model: Scala CL-24 ARRAY
2-lobe fan, southwest
KCBS-FM
93.1 MHz
Status: License
Application Accepted: 08/24/1978
Application Granted: 07/11/1979
KCBS-FM License Expires: 12/01/2021
Effective Radiated Power: 12.5 kW
Transmitter Output Power: 15.4 kW
Antenna Center HAAT: 860 m (2822 ft.)
Antenna Center AMSL: 1771 m (5810 ft.)
Antenna Center HAG: 46 m (151 ft.)
Omni-Directional Antenna
Antenna Make/Model: Jampro JSCP-2
*KEDD-LD
Channel 45DT
Status: STA Special Temporary Authority
Application Accepted: 10/13/2017
KEDD-LD License Expires: 10/17/2018
ERP: 0.03 kW
Polarization: Circularly polarized
R/C AGL: 6.3 m (21 ft.)
R/C AMSL: 1731 m (5679 ft.)
Emission Mask: Full Service
Directional Antenna – Antenna Make/Model: MICRO COMMUNICATIONS INC 952000-CP ARRAY
Direction: one lobe, south-southeast
NOTE: There are four other STAs, expired 4/17/2016, 10/17/2016, 04/17/2017, 10/17/2017 and 04/17/2018
