Universal Licensing System
WPKR784
ESM INC
License details
| ULS identifier | 1750703 |
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| Call sign | WPKR784 |
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| Radio service | IG |
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| Status | E |
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| Grant date | 1997-06-17 |
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| Expiration | 2002-06-17 |
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| Cancellation | 2002-10-20 |
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| Frequency range | 461.6 - 466.6 MHz (2 frequencies) |
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| Locations | 2 |
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| Representative location | TUCSON, PIMA, AZ |
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| Coordinates | 31.9139722, -110.7881389 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:29:03 |
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Licensee
| Name | ESM INC |
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| Applicant type | C |
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| Location | TUCSON, AZ |
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| Address | 3755 E 34TH ST 101A, TUCSON, AZ, 85713 |
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| Phone | 5207908992 |
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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 | FB4 | 461.60000000 | | | 100.000000 | 1000.000000 | |
| 2 | 1 | MO | 461.60000000 | | | 50.000000 | | |
| 2 | 1 | MO | 466.60000000 | | | 50.000000 | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 461.60000000 | | 20K0F3E |
| 2 | 1 | 461.60000000 | | 20K0F3E |
| 2 | 1 | 466.60000000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 3.73 MI S CORONA DE TUCSON, TUCSON, PIMA, AZ | 31.91397222, -110.78813889 | 1154.000 m | TOWER | 31.000 m structure / 37.000 m overall | N |
| 2 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
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| 1 | 1 | T | | 30.000 m | | | | 0.000 | |
| 1 | 2 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
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| 1 | 3755 E 34TH ST, TUCSON, AZ | | 5207908992 |
License history
| Date | File or call sign | Action |
|---|
| 2002-10-20 | WPKR784 | LIEXP |
| 2002-03-25 | WPKR784 | LETRES |
| 2001-10-26 | WPKR784 | AUDOPR |
| 2000-11-23 | WPKR784 | LICCNV |
| 1997-06-17 | WPKR784 | LIISS |
| 1997-06-17 | WPKR784 | AUTHPR |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1750703 | 2026-08-02 01:29:03 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WPKR784 | ULS 1750703 | 2026-08-02 01:29:03 |
| Status | E | ULS 1750703 | 2026-08-02 01:29:03 |
| Service | IG | ULS 1750703 | 2026-08-02 01:29:03 |
| Grant Date | 1997-06-17 | ULS 1750703 | 2026-08-02 01:29:03 |
| Expiration Date | 2002-06-17 | ULS 1750703 | 2026-08-02 01:29:03 |
| Cancellation Date | 2002-10-20 | ULS 1750703 | 2026-08-02 01:29:03 |