Universal Licensing System

WRDM704

Chelmsford, Town of Police Dept.

License details

ULS identifier4167565
Call signWRDM704
Radio serviceMW
StatusA
Grant date2019-06-05
Expiration2029-06-05
Frequency range17980 - 18060 MHz (2 frequencies)
Locations2
Representative locationChelmsford, MIDDLESEX, MA
Coordinates42.6172222, -71.3653056
Source archivel_micro.zip
Dataset refreshed2026-08-02 02:48:15

Licensee

NameChelmsford, Town of Police Dept.
Applicant typeG
FRN0003603982
LocationChelmsford, MA
Address2 Olde North Rd, Chelmsford, MA, 01824
Phone9782562521
Email[email protected]

Frequency assignments

LocationAntennaStation classAssigned MHzUpper MHzCarrier MHzOutput WERP WAltitude
11FXO17980.00000000
11FXO17980.00000000
11FXO17980.00000000
11FXO17980.00000000
11FXO17980.00000000
11FXO17980.00000000
11FXO17980.00000000
11FXO17980.00000000
11FXO17980.00000000
12FXO18060.00000000
12FXO18060.00000000
12FXO18060.00000000
12FXO18060.00000000
12FXO18060.00000000
12FXO18060.00000000
12FXO18060.00000000
12FXO18060.00000000
12FXO18060.00000000

Emission designators

LocationAntennaFrequency MHzUpper MHzEmission
1117980.0000000064M5D7W
1117980.0000000064M5D7W
1117980.0000000064M5D7W
1117980.0000000064M5D7W
1117980.0000000064M5D7W
1117980.0000000064M5D7W
1117980.0000000064M5D7W
1117980.0000000064M5D7W
1117980.0000000064M5D7W
1218060.0000000064M5D7W
1218060.0000000064M5D7W
1218060.0000000064M5D7W
1218060.0000000064M5D7W
1218060.0000000064M5D7W
1218060.0000000064M5D7W
1218060.0000000064M5D7W
1218060.0000000064M5D7W
1218060.0000000064M5D7W

Licensed locations

LocationTypeAddressCoordinatesGround elevationStructureHeightNEPA
1T230 North Road, Chelmsford, MIDDLESEX, MA42.61722222, -71.3653055651.200 mGTOWER24.400 m structure / 26.800 m overall
2R42.62025000, -71.3678333348.500 m

Antennas

LocationAntennaTypeMake / modelHeightPolarizationGain dBAzimuthRadiation centerMaximum EIRP W
11TRADIO WAVES INC. HP2-18V38.6000328.3000
12RRADIO WAVES INC. HP2-1838.6000
21TRADIO WAVES INC. HP2-18H38.6000328.3000
22RRADIO WAVES INC. HP2-1838.6000

Special conditions

TypeCondition code
P4020

License history

DateFile or call signAction
2020-09-12WRDM704LIAUA
2020-09-09WRDM704LETCNS
2019-06-05WRDM704LIISS

Sources and provenance

SourceSource recordRetrievedMatch
ULS41675652026-08-02 02:48:15Official Bulk Record
Selected field provenance
FieldDisplayed valueSourceObserved
Call SignWRDM704ULS 41675652026-08-02 02:48:15
StatusAULS 41675652026-08-02 02:48:15
ServiceMWULS 41675652026-08-02 02:48:15
Grant Date2019-06-05ULS 41675652026-08-02 02:48:15
Expiration Date2029-06-05ULS 41675652026-08-02 02:48:15