Universal Licensing System
WPRK741
Keltron IOT Corp
License details
| ULS identifier | 1832340 |
|---|
| Call sign | WPRK741 |
|---|
| Radio service | IG |
|---|
| Status | A |
|---|
| Grant date | 2025-11-20 |
|---|
| Expiration | 2035-11-03 |
|---|
| Frequency range | 456.5875 - 465.5125 MHz (2 frequencies) |
|---|
| Locations | 1 |
|---|
| Representative location | MIDDLESEX, MA |
|---|
| Coordinates | 42.3770278, -71.2325556 |
|---|
| Source archive | l_LMpriv.zip |
|---|
| Dataset refreshed | 2026-08-02 01:21:54 |
|---|
Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | MO | 456.58750000 | | | 2.000000 | 2.000000 | |
| 1 | 1 | MO | 465.51250000 | | | 2.000000 | 2.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 456.58750000 | | 11K3F2D |
| 1 | 1 | 465.51250000 | | 11K3F2D |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | MIDDLESEX, MA | 42.37702778, -71.23255556 | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 101A First Avenue, WALTHAM, MA | MIDDLESEX | 7818948710 |
License history
| Date | File or call sign | Action |
|---|
| 2025-11-20 | WPRK741 | LIREN |
| 2025-08-11 | WPRK741 | LETRES |
| 2024-04-04 | WPRK741 | LIAUA |
| 2023-10-04 | WPRK741 | LIAUA |
| 2020-04-09 | WPRK741 | LIAUA |
| 2018-05-08 | WPRK741 | LIASS |
| 2015-10-22 | WPRK741 | LIREN |
| 2015-10-21 | WPRK741 | ESUAPR |
| 2015-08-10 | WPRK741 | LETRES |
| 2014-09-08 | WPRK741 | ESUAPR |
| 2014-08-19 | WPRK741 | ESUAPR |
| 2014-08-13 | WPRK741 | ESUAPR |
| 2014-08-12 | WPRK741 | ESUAPR |
| 2014-08-11 | WPRK741 | ESUAPR |
| 2011-11-30 | WPRK741 | LIAUA |
| 2011-11-29 | WPRK741 | ESUAPR |
| 2005-08-13 | WPRK741 | LIREN |
| 2005-08-08 | WPRK741 | LETRES |
| 2005-01-31 | WPRK741 | LIMOD |
| 2005-01-13 | WPRK741 | LITIN |
| 2001-10-04 | WPRK741 | AUDOPR |
| 2001-02-15 | WPRK741 | COR |
| 2000-11-23 | WPRK741 | LICCNV |
| 2000-11-03 | WPRK741 | AUTHPR |
| 2000-11-03 | WPRK741 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1832340 | 2026-08-02 01:21:54 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPRK741 | ULS 1832340 | 2026-08-02 01:21:54 |
| Status | A | ULS 1832340 | 2026-08-02 01:21:54 |
| Service | IG | ULS 1832340 | 2026-08-02 01:21:54 |
| Grant Date | 2025-11-20 | ULS 1832340 | 2026-08-02 01:21:54 |
| Expiration Date | 2035-11-03 | ULS 1832340 | 2026-08-02 01:21:54 |