Universal Licensing System
555TF
Master Four LLC
License details
| ULS identifier | 3115113 |
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| Call sign | 555TF |
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| Radio service | AC |
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| Status | A |
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| Grant date | 2019-04-30 |
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| Expiration | 2029-06-30 |
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| Source archive | l_aircr.zip |
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| Dataset refreshed | 2026-08-02 01:39:18 |
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Licensee
| Name | Master Four LLC |
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| Applicant type | L |
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| FRN | 0014901797 |
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| Location | Oxford, CT |
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| Address | 3 Juliano Drive, Oxford, CT, 06478 |
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License history
| Date | File or call sign | Action |
|---|
| 2019-04-30 | 555TF | LIREN |
| 2019-04-08 | 555TF | LETRES |
| 2009-06-30 | 555TF | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 3115113 | 2026-08-02 01:39:18 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | 555TF | ULS 3115113 | 2026-08-02 01:39:18 |
| Status | A | ULS 3115113 | 2026-08-02 01:39:18 |
| Service | AC | ULS 3115113 | 2026-08-02 01:39:18 |
| Grant Date | 2019-04-30 | ULS 3115113 | 2026-08-02 01:39:18 |
| Expiration Date | 2029-06-30 | ULS 3115113 | 2026-08-02 01:39:18 |