Universal Licensing System
WNNK497
BIO GRO SYSTEMS INC
License details
| ULS identifier | 1666245 |
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| Call sign | WNNK497 |
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| Radio service | IG |
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| Status | T |
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| Grant date | 1999-01-24 |
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| Expiration | 2004-01-24 |
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| Cancellation | 2003-11-10 |
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| Frequency range | 461.75 - 466.75 MHz (2 frequencies) |
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| Locations | 3 |
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| Representative location | ROANOKE, VA |
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| Coordinates | 37.1859722, -80.1680833 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:18:03 |
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Licensee
| Name | BIO GRO SYSTEMS INC |
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| Applicant type | C |
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| FRN | 0002155141 |
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| Location | MILLERSVILLE, MD |
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| Address | 1110 BENFIELD BLVD STE B, MILLERSVILLE, MD, 21108 |
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| Phone | 7033432358 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 2 | 1 | FB4 | 461.75000000 | | | 110.000000 | 350.000000 | |
| 3 | 1 | MO | 461.75000000 | | | 110.000000 | | |
| 1 | 1 | FX1 | 466.75000000 | | | 15.000000 | | |
| 3 | 1 | MO | 466.75000000 | | | 110.000000 | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 2 | 1 | 461.75000000 | | 20K0F3E |
| 3 | 1 | 461.75000000 | | 20K0F3E |
| 1 | 1 | 466.75000000 | | 20K0F3E |
| 3 | 1 | 466.75000000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | VA | | | | | |
| 2 | T | POORE MOUNTAIN, ROANOKE, VA | 37.18597222, -80.16808333 | 1146.000 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 | 1402 BENNINGTON ST, ROANOKE, VA | | 7033432358 |
License history
| Date | File or call sign | Action |
|---|
| 2003-11-10 | WNNK497 | LITERM |
| 2003-10-27 | WNNK497 | LETRES |
| 2002-05-07 | WNNK497 | AUDCAN |
| 2000-11-23 | WNNK497 | LICCNV |
| 2000-11-08 | WNNK497 | LITRAN |
| 2000-11-08 | WNNK497 | AUTHPR |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1666245 | 2026-08-02 01:18:03 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WNNK497 | ULS 1666245 | 2026-08-02 01:18:03 |
| Status | T | ULS 1666245 | 2026-08-02 01:18:03 |
| Service | IG | ULS 1666245 | 2026-08-02 01:18:03 |
| Grant Date | 1999-01-24 | ULS 1666245 | 2026-08-02 01:18:03 |
| Expiration Date | 2004-01-24 | ULS 1666245 | 2026-08-02 01:18:03 |
| Cancellation Date | 2003-11-10 | ULS 1666245 | 2026-08-02 01:18:03 |