Universal Licensing System
WSDU307
Critical Process Filtration, Inc.
License details
| ULS identifier | 4981953 |
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| Call sign | WSDU307 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2024-07-16 |
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| Expiration | 2034-07-16 |
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| Frequency range | 451.7625 - 467.2625 MHz (5 frequencies) |
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| Locations | 1 |
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| Representative location | Nashua, HILLSBOROUGH, NH |
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| Coordinates | 42.7596389, -71.4705000 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:24:31 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | MO | 451.76250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 456.76250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 462.26250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 466.88750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 467.26250000 | | | 4.000000 | 4.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 451.76250000 | | 7K60F1E |
| 1 | 1 | 456.76250000 | | 7K60F1E |
| 1 | 1 | 462.26250000 | | 7K60F1E |
| 1 | 1 | 466.88750000 | | 7K60F1E |
| 1 | 1 | 467.26250000 | | 7K60F1E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | Nashua, HILLSBOROUGH, NH | 42.75963889, -71.47050000 | | | | |
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 | One Chestnut Street, Nashua, NH | HILLSBOROUGH | 6033478871 |
License history
| Date | File or call sign | Action |
|---|
| 2024-07-16 | WSDU307 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4981953 | 2026-08-02 01:24:31 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WSDU307 | ULS 4981953 | 2026-08-02 01:24:31 |
| Status | A | ULS 4981953 | 2026-08-02 01:24:31 |
| Service | IG | ULS 4981953 | 2026-08-02 01:24:31 |
| Grant Date | 2024-07-16 | ULS 4981953 | 2026-08-02 01:24:31 |
| Expiration Date | 2034-07-16 | ULS 4981953 | 2026-08-02 01:24:31 |