Universal Licensing System
WSCK218
License details
| ULS identifier | 4933023 |
|---|---|
| Call sign | WSCK218 |
| Radio service | IG |
| Status | A |
| Grant date | 2024-04-12 |
| Expiration | 2034-04-12 |
| Frequency range | 452.0375 - 457.85 MHz (8 frequencies) |
| Locations | 12 |
| Representative location | Chelmsford, MIDDLESEX, MA |
| Coordinates | 42.6002778, -71.3436111 |
| Source archive | l_LMpriv.zip |
| Dataset refreshed | 2026-08-02 01:25:21 |
Licensee
| Name | Chelmsford Public Schools |
|---|---|
| Applicant type | G |
| FRN | 0009281692 |
| Location | Chelmsford, MA |
| Address | 230 North Road, Chelmsford, MA, 01824 |
| Phone | 9782515100 |
| [email protected] |
Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|---|---|---|---|---|---|---|---|
| 10 | 1 | MO | 452.03750000 | 4.000000 | 4.000000 | |||
| 11 | 1 | MO | 452.03750000 | 4.000000 | 4.000000 | |||
| 12 | 1 | MO | 452.03750000 | 4.000000 | 4.000000 | |||
| 11 | 1 | MO | 452.22500000 | 4.000000 | 4.000000 | |||
| 11 | 1 | MO | 452.63750000 | 4.000000 | 4.000000 | |||
| 9 | 1 | MO | 452.72500000 | 4.000000 | 4.000000 | |||
| 10 | 1 | MO | 452.81250000 | 4.000000 | 4.000000 | |||
| 9 | 1 | MO | 452.85000000 | 4.000000 | 4.000000 | |||
| 12 | 1 | MO | 452.85000000 | 4.000000 | 4.000000 | |||
| 9 | 1 | MO | 456.76250000 | 4.000000 | 4.000000 | |||
| 10 | 1 | MO | 456.76250000 | 4.000000 | 4.000000 | |||
| 12 | 1 | MO | 456.76250000 | 4.000000 | 4.000000 | |||
| 9 | 1 | MO | 457.03750000 | 4.000000 | 4.000000 | |||
| 10 | 1 | MO | 457.03750000 | 4.000000 | 4.000000 | |||
| 11 | 1 | MO | 457.03750000 | 4.000000 | 4.000000 | |||
| 12 | 1 | MO | 457.03750000 | 4.000000 | 4.000000 | |||
| 11 | 1 | MO | 457.63750000 | 4.000000 | 4.000000 | |||
| 9 | 1 | MO | 457.72500000 | 4.000000 | 4.000000 | |||
| 10 | 1 | MO | 457.81250000 | 4.000000 | 4.000000 | |||
| 12 | 1 | MO | 457.85000000 | 4.000000 | 4.000000 | |||
| 7 | 1 | FB2 | 461.30000000 | 10.000000 | 10.000000 | |||
| 8 | 1 | MO | 461.30000000 | 4.000000 | 4.000000 | |||
| 3 | 1 | FB2 | 461.66250000 | 10.000000 | 10.000000 | |||
| 4 | 1 | MO | 461.66250000 | 4.000000 | 4.000000 | |||
| 1 | 1 | FB2 | 462.25000000 | 10.000000 | 10.000000 | |||
| 2 | 1 | MO | 462.25000000 | 4.000000 | 4.000000 | |||
| 3 | 1 | FB2 | 463.48750000 | 10.000000 | 10.000000 | |||
| 4 | 1 | MO | 463.48750000 | 4.000000 | 4.000000 | |||
| 5 | 1 | FB2 | 463.53750000 | 10.000000 | 10.000000 | |||
| 6 | 1 | MO | 463.53750000 | 4.000000 | 4.000000 | |||
| 7 | 1 | FB2 | 463.63750000 | 10.000000 | 10.000000 | |||
| 8 | 1 | MO | 463.63750000 | 4.000000 | 4.000000 | |||
| 1 | 1 | FB2 | 464.11250000 | 10.000000 | 10.000000 | |||
| 2 | 1 | MO | 464.11250000 | 4.000000 | 4.000000 | |||
| 5 | 1 | FB2 | 464.43750000 | 10.000000 | 10.000000 | |||
| 6 | 1 | MO | 464.43750000 | 4.000000 | 4.000000 | |||
| 8 | 1 | MO | 466.30000000 | 4.000000 | 4.000000 | |||
| 4 | 1 | MO | 466.66250000 | 4.000000 | 4.000000 | |||
| 2 | 1 | MO | 467.25000000 | 4.000000 | 4.000000 | |||
| 4 | 1 | MO | 468.48750000 | 4.000000 | 4.000000 | |||
| 6 | 1 | MO | 468.53750000 | 4.000000 | 4.000000 | |||
| 8 | 1 | MO | 468.63750000 | 4.000000 | 4.000000 | |||
| 2 | 1 | MO | 469.11250000 | 4.000000 | 4.000000 | |||
| 6 | 1 | MO | 469.43750000 | 4.000000 | 4.000000 |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|---|---|---|---|
| 10 | 1 | 452.03750000 | 7K60FXD | |
| 10 | 1 | 452.03750000 | 7K60FXE | |
| 11 | 1 | 452.03750000 | 7K60FXE | |
| 11 | 1 | 452.03750000 | 7K60FXD | |
| 12 | 1 | 452.03750000 | 7K60FXE | |
| 12 | 1 | 452.03750000 | 7K60FXD | |
| 11 | 1 | 452.22500000 | 7K60FXD | |
| 11 | 1 | 452.22500000 | 7K60FXE | |
| 11 | 1 | 452.63750000 | 7K60FXE | |
| 11 | 1 | 452.63750000 | 7K60FXD | |
| 9 | 1 | 452.72500000 | 7K60FXE | |
| 9 | 1 | 452.72500000 | 7K60FXD | |
| 10 | 1 | 452.81250000 | 7K60FXE | |
| 10 | 1 | 452.81250000 | 7K60FXD | |
| 9 | 1 | 452.85000000 | 7K60FXE | |
| 9 | 1 | 452.85000000 | 7K60FXD | |
| 12 | 1 | 452.85000000 | 7K60FXE | |
| 12 | 1 | 452.85000000 | 7K60FXD | |
| 9 | 1 | 456.76250000 | 7K60FXD | |
| 9 | 1 | 456.76250000 | 7K60FXE | |
| 10 | 1 | 456.76250000 | 7K60FXE | |
| 10 | 1 | 456.76250000 | 7K60FXD | |
| 12 | 1 | 456.76250000 | 7K60FXE | |
| 12 | 1 | 456.76250000 | 7K60FXD | |
| 9 | 1 | 457.03750000 | 7K60FXE | |
| 9 | 1 | 457.03750000 | 7K60FXD | |
| 10 | 1 | 457.03750000 | 7K60FXD | |
| 10 | 1 | 457.03750000 | 7K60FXE | |
| 11 | 1 | 457.03750000 | 7K60FXE | |
| 11 | 1 | 457.03750000 | 7K60FXD | |
| 12 | 1 | 457.03750000 | 7K60FXD | |
| 12 | 1 | 457.03750000 | 7K60FXE | |
| 11 | 1 | 457.63750000 | 7K60FXE | |
| 11 | 1 | 457.63750000 | 7K60FXD | |
| 9 | 1 | 457.72500000 | 7K60FXD | |
| 9 | 1 | 457.72500000 | 7K60FXE | |
| 10 | 1 | 457.81250000 | 7K60FXE | |
| 10 | 1 | 457.81250000 | 7K60FXD | |
| 12 | 1 | 457.85000000 | 7K60FXD | |
| 12 | 1 | 457.85000000 | 7K60FXE | |
| 7 | 1 | 461.30000000 | 7K60FXE | |
| 7 | 1 | 461.30000000 | 7K60FXD | |
| 8 | 1 | 461.30000000 | 7K60FXD | |
| 8 | 1 | 461.30000000 | 7K60FXE | |
| 3 | 1 | 461.66250000 | 7K60FXE | |
| 3 | 1 | 461.66250000 | 7K60FXD | |
| 4 | 1 | 461.66250000 | 7K60FXD | |
| 4 | 1 | 461.66250000 | 7K60FXE | |
| 1 | 1 | 462.25000000 | 7K60FXE | |
| 1 | 1 | 462.25000000 | 7K60FXD | |
| 2 | 1 | 462.25000000 | 7K60FXE | |
| 2 | 1 | 462.25000000 | 7K60FXD | |
| 3 | 1 | 463.48750000 | 7K60FXE | |
| 3 | 1 | 463.48750000 | 7K60FXD | |
| 4 | 1 | 463.48750000 | 7K60FXE | |
| 4 | 1 | 463.48750000 | 7K60FXD | |
| 5 | 1 | 463.53750000 | 7K60FXE | |
| 5 | 1 | 463.53750000 | 7K60FXD | |
| 6 | 1 | 463.53750000 | 7K60FXD | |
| 6 | 1 | 463.53750000 | 7K60FXE | |
| 7 | 1 | 463.63750000 | 7K60FXE | |
| 7 | 1 | 463.63750000 | 7K60FXD | |
| 8 | 1 | 463.63750000 | 7K60FXD | |
| 8 | 1 | 463.63750000 | 7K60FXE | |
| 1 | 1 | 464.11250000 | 7K60FXE | |
| 1 | 1 | 464.11250000 | 7K60FXD | |
| 2 | 1 | 464.11250000 | 7K60FXE | |
| 2 | 1 | 464.11250000 | 7K60FXD | |
| 5 | 1 | 464.43750000 | 7K60FXD | |
| 5 | 1 | 464.43750000 | 7K60FXE | |
| 6 | 1 | 464.43750000 | 7K60FXD | |
| 6 | 1 | 464.43750000 | 7K60FXE | |
| 8 | 1 | 466.30000000 | 7K60FXD | |
| 8 | 1 | 466.30000000 | 7K60FXE | |
| 4 | 1 | 466.66250000 | 7K60FXE | |
| 4 | 1 | 466.66250000 | 7K60FXD | |
| 2 | 1 | 467.25000000 | 7K60FXD | |
| 2 | 1 | 467.25000000 | 7K60FXE | |
| 4 | 1 | 468.48750000 | 7K60FXD | |
| 4 | 1 | 468.48750000 | 7K60FXE | |
| 6 | 1 | 468.53750000 | 7K60FXE | |
| 6 | 1 | 468.53750000 | 7K60FXD | |
| 8 | 1 | 468.63750000 | 7K60FXE | |
| 8 | 1 | 468.63750000 | 7K60FXD | |
| 2 | 1 | 469.11250000 | 7K60FXD | |
| 2 | 1 | 469.11250000 | 7K60FXE | |
| 6 | 1 | 469.43750000 | 7K60FXE | |
| 6 | 1 | 469.43750000 | 7K60FXD |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|---|---|---|---|---|---|---|
| 1 | T | 84 Billerica Rd, Chelmsford, MIDDLESEX, MA | 42.60027778, -71.34361111 | 37.000 m | B | 7.600 m structure / 7.600 m overall | |
| 2 | T | ||||||
| 3 | T | 120 Richardson Road, North Chelmsford, MIDDLESEX, MA | 42.62250000, -71.37916667 | 44.000 m | BANT | 9.100 m structure / 10.700 m overall | |
| 4 | T | ||||||
| 5 | T | 250 Boston Road, Chelmsford, MIDDLESEX, MA | 42.57666667, -71.33583333 | 40.000 m | B | 25.000 m structure / 25.000 m overall | |
| 6 | T | ||||||
| 7 | T | 170 Dalton Road, Chelmsford, MIDDLESEX, MA | 42.61138889, -71.34222222 | 42.000 m | BANT | 6.100 m structure / 6.700 m overall | |
| 8 | T | ||||||
| 9 | T | Chelmsford, MIDDLESEX, MA | 42.60027778, -71.34361111 | ||||
| 10 | T | North Chelmsford, MIDDLESEX, MA | 42.62250000, -71.37916667 | ||||
| 11 | T | Chelmsford, MIDDLESEX, MA | 42.57666667, -71.33583333 | ||||
| 12 | T | Chelmsford, MIDDLESEX, MA | 42.61138889, -71.34222222 |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | T | 7.600 m | -5.900 | |||||
| 1 | 2 | T | |||||||
| 1 | 3 | T | 10.700 m | -6.800 | |||||
| 1 | 4 | T | |||||||
| 1 | 5 | T | 7.600 m | -6.000 | |||||
| 1 | 6 | T | |||||||
| 1 | 7 | T | 6.700 m | -0.400 | |||||
| 1 | 8 | T | |||||||
| 1 | 9 | T | |||||||
| 1 | 10 | T | |||||||
| 1 | 11 | T | |||||||
| 1 | 12 | T |
Control points
| Number | Address | County | Phone |
|---|---|---|---|
| 1 | 230 North Road, Chelmsford, MA | 9782515100 |
License history
| Date | File or call sign | Action |
|---|---|---|
| 2025-01-14 | WSCK218 | LETCNS |
| 2024-07-31 | WSCK218 | LIMOD |
| 2024-04-12 | WSCK218 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|---|---|---|
| ULS | 4933023 | 2026-08-02 01:25:21 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|---|---|---|
| Call Sign | WSCK218 | ULS 4933023 | 2026-08-02 01:25:21 |
| Status | A | ULS 4933023 | 2026-08-02 01:25:21 |
| Service | IG | ULS 4933023 | 2026-08-02 01:25:21 |
| Grant Date | 2024-04-12 | ULS 4933023 | 2026-08-02 01:25:21 |
| Expiration Date | 2034-04-12 | ULS 4933023 | 2026-08-02 01:25:21 |