Universal Licensing System
WPON421
BACKLINK I, LLC
License details
| ULS identifier | 1078172 |
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| Call sign | WPON421 |
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| Radio service | CF |
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| Status | C |
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| Grant date | 2000-03-31 |
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| Expiration | 2010-03-31 |
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| Cancellation | 2002-06-24 |
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| Frequency range | 21325 MHz |
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| Locations | 2 |
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| Representative location | PHILADELPHIA, PHILADELPHIA, PA |
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| Coordinates | 39.9521389, -75.1670833 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:47:55 |
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Licensee
| Name | BACKLINK I, LLC |
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| Applicant type | L |
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| Location | Herndon, VA |
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| Address | 460 Herndon Parkway, Suite 100, Herndon, VA, 20170 |
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| Phone | 7033264650 |
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| Email | [email protected] |
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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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| 1 | 1 | FXO | 21325.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
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| 1 | 1 | 21325.00000000 | | 40M0F7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | 1600 MARKET STREET, PHILADELPHIA, PHILADELPHIA, PA | 39.95213889, -75.16708333 | 12.200 m | BPOLE | 151.200 m structure / 152.700 m overall | |
| 2 | R | | 39.96072222, -75.16002778 | 12.200 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
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| 1 | 1 | T | RADIO WAVES INC HPLP1.5-23 | | H | 37.8000 | 32.3000 | | |
| 1 | 2 | R | RADIO WAVES INC. HPLP1.5-23 | | | 37.8000 | | | |
Control points
| Number | Address | County | Phone |
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| 1 | 8065 LEESBURG PIKE, SUITE 400, VIENNA, VA | | 7037625441 |
License history
| Date | File or call sign | Action |
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| 2002-06-25 | WPON421 | LICAN |
| 2002-06-21 | WPON421 | LIASS |
| 2001-09-07 | WPON421 | LIASS |
| 2001-09-06 | WPON421 | LITRAN |
| 2000-03-31 | WPON421 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
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| ULS | 1078172 | 2026-08-02 02:47:55 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WPON421 | ULS 1078172 | 2026-08-02 02:47:55 |
| Status | C | ULS 1078172 | 2026-08-02 02:47:55 |
| Service | CF | ULS 1078172 | 2026-08-02 02:47:55 |
| Grant Date | 2000-03-31 | ULS 1078172 | 2026-08-02 02:47:55 |
| Expiration Date | 2010-03-31 | ULS 1078172 | 2026-08-02 02:47:55 |
| Cancellation Date | 2002-06-24 | ULS 1078172 | 2026-08-02 02:47:55 |