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General Info
Call Sign: WLP431 ULS File Number: 0006205231
Radio Service: Aural Studio Transmitter Link License Status: Active
Granted: 11/21/1990 Expires: 02/01/2029
Certifier: Certifier Title:
FCC Web Link:   WLP431 License Data  
Licensee and Contact Information
Licensee or Assignee
Double Helix Corporation. Debtor-in-Possession
3524 Washington Ave
Saint Louis, MO 63103
Phone: (314) 664-3955
FRN:
Licensee Contact
Double Helix Corporation
3524 Washington Ave.
Saint Louis, MO 63103
Attn: KDHX Radio Engineering
Attn: Beverly . Hacker
Phone: (314) 925-0451
Comments
01/21/2003: License updated since parent station was modified in CDBS.
02/18/2005: License renewed since parent station was renewed IN CDBS.
12/19/2007: License updated since parent station was modified IN CDBS.
01/15/2008: License updated since parent station was modified IN CDBS.
08/26/2009: License updated since parent station was modified IN CDBS.
03/15/2014: License renewed since parent station was renewed IN CDBS.
04/08/2014: License updated since parent station was modified IN CDBS.
10/08/2020: License updated since parent station was modified IN CDBS.
02/03/2021: License renewed since parent station was renewed IN CDBS.
05/22/2021: License updated since parent station was modified IN CDBS.
05/02/2025: License updated since parent station was modified IN CDBS.
Associated Broadcast
Station Information
Parent Facility ID: 17380
Parent Callsign: KDHX (FM)
Broadcast City: ST. LOUIS, MO
Path 1 Info
Transmit Location 1
Larry J Weir Bldg

Name: Larry J Weir Bldg
Location Type: Fixed
Address: 3524 Washington Ave
St. Louis, MO
Structure: Building with Pipe
Ground Elevation: 161.5 m
Structure Height: 18.9 m
Overall Structure Height: 20.4 m
Latitude: 38-38-19.3 N. (NAD 83)
Longitude: 90-13-50.9 W. (NAD 83)

Larry J Weir Bldg - Antenna 1
Antenna Mfgr: Mark
Antenna Model: P9A72GNU
Antenna Height: 20.4 m.
Antenna Elevation Angle (tilt): 0.1 °
Polarization: H
Antenna Beamwidth: 12.5 °
Azimuth: 215.6 °
Antenna Gain: 22.1 dB
Freq 1 Lower: 949.500000 MHz
Freq 1 EIRP: 49.6 dBm
Freq 1 Emission: 500KD7W
Freq 1 Digital Mod Rate: 2048 kb/s
Freq 1 Digital Mod Type: 64QAM
Transmitter Manufacturer: Moseley
Transmitter Model: SL-9003Q
Station Class: Operational Fixed
Constructed: 04/28/2014
Receive Location 2
Tower site

Name: Tower site
Location Type: Fixed
Ground Elevation: 236.3 m
Latitude: 38-25-01.0 N. (NAD 83)
Longitude: 90-25-59.0 W. (NAD 83)

Tower site - Antenna 0
Antenna Mfgr: Mark
Antenna Model: P9A48GNU
Antenna Height: 61.0 m.
Antenna Beamwidth: 17.5 °
Antenna Gain: 19.2 dB

Study Date: 7/02/2025; Study Duration: 0.6587 Seconds.
Database Sources:
07/02/2025 FCC LMS,
7/1/2025 FCC ASR,
7/1/2025 FCC ULS Microwave, and
7/1/2025 FCC ULS Broadcast Land Mobile.



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