Universal Licensing System
WPMM404
CHELMSFORD, TOWN OF
License details
| ULS identifier | 1294589 |
|---|
| Call sign | WPMM404 |
|---|
| Radio service | PW |
|---|
| Status | A |
|---|
| Grant date | 2023-09-12 |
|---|
| Expiration | 2033-09-16 |
|---|
| Frequency range | 482.775 - 485.775 MHz (2 frequencies) |
|---|
| Locations | 3 |
|---|
| Representative location | CHELMSFORD, MIDDLESEX, MA |
|---|
| Coordinates | 42.6139722, -71.3750556 |
|---|
| Source archive | l_LMpriv.zip |
|---|
| Dataset refreshed | 2026-08-09 03:07:02 |
|---|
Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB2 | 482.77500000 | | | 30.000000 | 45.000000 | |
| 2 | 1 | FB2S | 482.77500000 | | | 30.000000 | 45.000000 | |
| 3 | 1 | MO | 482.77500000 | | | 30.000000 | 30.000000 | |
| 3 | 1 | MO | 485.77500000 | | | 30.000000 | 30.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 482.77500000 | | 11K3F3E |
| 2 | 1 | 482.77500000 | | 11K3F3E |
| 3 | 1 | 482.77500000 | | 11K3F3E |
| 3 | 1 | 485.77500000 | | 11K3F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | WATER TANK AT LOCKE RD, CHELMSFORD, MIDDLESEX, MA | 42.61397222, -71.37505556 | 98.000 m | TANK | 22.000 m structure / 30.000 m overall | N |
| 2 | T | 230 NORTH ST, CHELMSFORD, MIDDLESEX, MA | 42.61758333, -71.36561111 | 46.000 m | B | 11.000 m structure / 11.000 m overall | N |
| 3 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 30.000 m | | | | 68.000 | |
| 1 | 2 | T | | 11.000 m | | | | 1.300 | |
| 1 | 3 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 2 | FIRE HEADQUARETERS 7 NORTH ROAD, CHEMLSFORD, MA | MIDDLESEX | 5082505267 |
License history
| Date | File or call sign | Action |
|---|
| 2023-09-12 | WPMM404 | LIREN |
| 2013-06-19 | WPMM404 | LIREN |
| 2013-04-25 | WPMM404 | LIAUA |
| 2013-04-25 | WPMM404 | LTSAPR |
| 2008-06-17 | WPMM404 | LTSAPR |
| 2008-06-17 | WPMM404 | LIAUA |
| 2004-09-20 | WPMM404 | LIMOD |
| 2004-01-28 | WPMM404 | LIREN |
| 2004-01-28 | WPMM404 | COR |
| 2003-06-23 | WPMM404 | LETRES |
| 2001-09-14 | WPMM404 | AUDOPR |
| 2000-10-20 | WPMM404 | LICCNV |
| 1998-09-16 | WPMM404 | AUTHPR |
| 1998-09-16 | WPMM404 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1294589 | 2026-08-09 03:07:02 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPMM404 | ULS 1294589 | 2026-08-09 03:07:02 |
| Status | A | ULS 1294589 | 2026-08-09 03:07:02 |
| Service | PW | ULS 1294589 | 2026-08-09 03:07:02 |
| Grant Date | 2023-09-12 | ULS 1294589 | 2026-08-09 03:07:02 |
| Expiration Date | 2033-09-16 | ULS 1294589 | 2026-08-09 03:07:02 |