Universal Licensing System
WDI4
Aviation Spectrum Resources Inc
License details
| ULS identifier | 1974646 |
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| Call sign | WDI4 |
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| Radio service | AF |
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| Status | A |
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| Grant date | 2019-08-06 |
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| Expiration | 2029-08-30 |
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| Frequency range | 129.125 - 136.975 MHz (7 frequencies) |
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| Locations | 1 |
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| Representative location | PITTSBURGH, ALLEGHENY, PA |
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| Coordinates | 40.4945556, -80.2446667 |
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| Source archive | l_coast.zip |
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| Dataset refreshed | 2026-08-02 02:08:29 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FA | 129.12500000 | | | 25.000000 | | HL |
| 1 | 1 | FA | 129.52500000 | | | 25.000000 | | HL |
| 1 | 1 | FA | 130.02500000 | | | 25.000000 | | HL |
| 1 | 1 | FA | 130.45000000 | | | 25.000000 | | HL |
| 1 | 1 | FA | 131.55000000 | | | 25.000000 | | HL |
| 1 | 1 | FA | 136.65000000 | | | 25.000000 | | HL |
| 1 | 1 | FA | 136.97500000 | | | 25.000000 | | HL |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 129.12500000 | | 13K0A2D |
| 1 | 1 | 129.52500000 | | 13K0A2D |
| 1 | 1 | 130.02500000 | | 13K0A2D |
| 1 | 1 | 130.45000000 | | 13K0A2D |
| 1 | 1 | 131.55000000 | | 13K0A2D |
| 1 | 1 | 136.65000000 | | 14K0G1D |
| 1 | 1 | 136.97500000 | | 14K0G1D |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | PITTSBURGH INTERNATIONAL AIRPORT, PITTSBURGH, ALLEGHENY, PA | 40.49455556, -80.24466667 | 364.500 m | BANT | 12.500 m structure / 15.500 m overall | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 15.500 m | | | 360.0000 | | |
Control points
| Number | Address | County | Phone |
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| 1 | 2551 RIVA RD, ANNAPOLIS, MD | ANNE ARUNDEL | 4102664034 |
License history
| Date | File or call sign | Action |
|---|
| 2023-02-01 | WDI4 | LIMOD |
| 2021-07-28 | WDI4 | LIAUA |
| 2019-08-06 | WDI4 | LIREN |
| 2019-06-03 | WDI4 | LETRES |
| 2015-10-23 | WDI4 | LIMOD |
| 2015-08-24 | WDI4 | ESUAPR |
| 2015-02-06 | WDI4 | LIAUA |
| 2015-02-05 | WDI4 | LIAUA |
| 2015-02-05 | WDI4 | ESUAPR |
| 2015-02-04 | WDI4 | ESUAPR |
| 2010-11-02 | WDI4 | LIMOD |
| 2010-09-07 | WDI4 | ESUAPR |
| 2009-07-28 | WDI4 | LIREN |
| 2009-06-08 | WDI4 | LETRES |
| 2007-03-01 | WDI4 | AUTHPR |
| 2006-03-07 | WDI4 | AUTHPR |
| 2006-01-01 | WDI4 | LIASS |
| 2005-07-25 | WDI4 | ESCAPR |
| 2004-08-03 | WDI4 | LIREN |
| 2004-06-07 | WDI4 | LETRES |
| 2001-04-27 | WDI4 | LICCNV |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1974646 | 2026-08-02 02:08:29 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WDI4 | ULS 1974646 | 2026-08-02 02:08:29 |
| Status | A | ULS 1974646 | 2026-08-02 02:08:29 |
| Service | AF | ULS 1974646 | 2026-08-02 02:08:29 |
| Grant Date | 2019-08-06 | ULS 1974646 | 2026-08-02 02:08:29 |
| Expiration Date | 2029-08-30 | ULS 1974646 | 2026-08-02 02:08:29 |