Universal Licensing System
KNFS579
MASTER MAINTENANCE INC
License details
| ULS identifier | 1623282 |
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| Call sign | KNFS579 |
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| Radio service | IG |
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| Status | T |
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| Grant date | 1997-04-11 |
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| Expiration | 2002-05-18 |
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| Cancellation | 2002-03-04 |
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| Frequency range | 463.95 - 468.95 MHz (2 frequencies) |
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| Locations | 3 |
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| Representative location | HAYMARKET, PRINCE WILLIAM, VA |
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| Coordinates | 38.9034444, -77.6666667 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:11:57 |
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Licensee
| Name | MASTER MAINTENANCE INC |
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| Applicant type | U |
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| FRN | 0004225884 |
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| Location | MANASSAS, VA |
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| Address | MANASSAS, VA, 22110 |
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| Phone | 7033612156 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
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| 2 | 1 | FB2 | 463.95000000 | | | 100.000000 | | |
| 1 | 1 | FX1 | 468.95000000 | | | 30.000000 | | |
| 3 | 1 | MO | 468.95000000 | | | 100.000000 | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 2 | 1 | 463.95000000 | | 20K0F3E |
| 1 | 1 | 468.95000000 | | 20K0F3E |
| 3 | 1 | 468.95000000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | VA | | | | | |
| 2 | T | BULL RUN MOUNTAIN, HAYMARKET, PRINCE WILLIAM, VA | 38.90344444, -77.66666667 | 326.000 m | | | N |
| 3 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | | | | | |
| 1 | 2 | T | | 30.000 m | | | | | |
| 1 | 3 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 9117 CENTREVILLE RD, MANASSAS, VA | | 7033612156 |
License history
| Date | File or call sign | Action |
|---|
| 2002-03-04 | KNFS579 | LITERM |
| 2002-02-19 | KNFS579 | LETRES |
| 2001-10-11 | KNFS579 | AUDCAN |
| 2000-11-23 | KNFS579 | LICCNV |
| 1997-04-11 | KNFS579 | LIREN |
| 1997-04-11 | KNFS579 | AUTHPR |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1623282 | 2026-08-02 01:11:57 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | KNFS579 | ULS 1623282 | 2026-08-02 01:11:57 |
| Status | T | ULS 1623282 | 2026-08-02 01:11:57 |
| Service | IG | ULS 1623282 | 2026-08-02 01:11:57 |
| Grant Date | 1997-04-11 | ULS 1623282 | 2026-08-02 01:11:57 |
| Expiration Date | 2002-05-18 | ULS 1623282 | 2026-08-02 01:11:57 |
| Cancellation Date | 2002-03-04 | ULS 1623282 | 2026-08-02 01:11:57 |