Universal Licensing System
WPKU648
STUDEBAKER MESSENGER
License details
| ULS identifier | 1929420 |
|---|
| Call sign | WPKU648 |
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| Radio service | YU |
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| Status | E |
|---|
| Grant date | 1997-07-22 |
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| Expiration | 2002-07-22 |
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| Cancellation | 2002-11-24 |
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| Frequency range | 899.7 - 939.1875 MHz (12 frequencies) |
|---|
| Locations | 3 |
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| Representative location | SAN FRANCISCO, SAN FRANCISCO, CA |
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| Coordinates | 37.7929722, -122.4141389 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:28:06 |
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Licensee
| Name | STUDEBAKER MESSENGER |
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| Applicant type | C |
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| Location | SAN FRANCISCO, CA |
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| Address | SAN FRANCISCO, CA, 94107 |
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| Phone | 4155727471 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 2 | 1 | FX1 | 899.70000000 | | | 30.000000 | 30.000000 | |
| 3 | 1 | MO | 899.70000000 | | | 30.000000 | 30.000000 | |
| 2 | 1 | FX1 | 900.13750000 | | | 30.000000 | 30.000000 | |
| 3 | 1 | MO | 900.13750000 | | | 30.000000 | 30.000000 | |
| 2 | 1 | FX1 | 900.15000000 | | | 30.000000 | 30.000000 | |
| 3 | 1 | MO | 900.15000000 | | | 30.000000 | 30.000000 | |
| 2 | 1 | FX1 | 900.16250000 | | | 30.000000 | 30.000000 | |
| 3 | 1 | MO | 900.16250000 | | | 30.000000 | 30.000000 | |
| 2 | 1 | FX1 | 900.17500000 | | | 30.000000 | 30.000000 | |
| 3 | 1 | MO | 900.17500000 | | | 30.000000 | 30.000000 | |
| 2 | 1 | FX1 | 900.18750000 | | | 30.000000 | 30.000000 | |
| 3 | 1 | MO | 900.18750000 | | | 30.000000 | 30.000000 | |
| 1 | 1 | FB4C | 938.70000000 | | | 100.000000 | 35.000000 | |
| 1 | 1 | FB4C | 939.13750000 | | | 100.000000 | 35.000000 | |
| 1 | 1 | FB4C | 939.15000000 | | | 100.000000 | 35.000000 | |
| 1 | 1 | FB4C | 939.16250000 | | | 100.000000 | 35.000000 | |
| 1 | 1 | FB4C | 939.17500000 | | | 100.000000 | 35.000000 | |
| 1 | 1 | FB4C | 939.18750000 | | | 100.000000 | 35.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 2 | 1 | 899.70000000 | | 13K6F3E |
| 3 | 1 | 899.70000000 | | 13K6F3E |
| 2 | 1 | 900.13750000 | | 13K6F3E |
| 3 | 1 | 900.13750000 | | 13K6F3E |
| 2 | 1 | 900.15000000 | | 13K6F3E |
| 3 | 1 | 900.15000000 | | 13K6F3E |
| 2 | 1 | 900.16250000 | | 13K6F3E |
| 3 | 1 | 900.16250000 | | 13K6F3E |
| 2 | 1 | 900.17500000 | | 13K6F3E |
| 3 | 1 | 900.17500000 | | 13K6F3E |
| 2 | 1 | 900.18750000 | | 13K6F3E |
| 3 | 1 | 900.18750000 | | 13K6F3E |
| 1 | 1 | 938.70000000 | | 13K6F3E |
| 1 | 1 | 939.13750000 | | 13K6F3E |
| 1 | 1 | 939.15000000 | | 13K6F3E |
| 1 | 1 | 939.16250000 | | 13K6F3E |
| 1 | 1 | 939.17500000 | | 13K6F3E |
| 1 | 1 | 939.18750000 | | 13K6F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | CLAY JONES BLDG 1250 JONES ST, SAN FRANCISCO, SAN FRANCISCO, CA | 37.79297222, -122.41413889 | 115.000 m | B | 108.000 m structure / 108.000 m overall | N |
| 2 | T | CA | | | | | |
| 3 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 97.000 m | | | | 77.000 | |
| 1 | 2 | T | | | | | | | |
| 1 | 3 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 411 BRANNAN ST, SAN FRANCISCO, CA | | 4155127471 |
License history
| Date | File or call sign | Action |
|---|
| 2002-11-24 | WPKU648 | LIEXP |
| 2002-04-29 | WPKU648 | LETRES |
| 2000-11-24 | WPKU648 | LICCNV |
| 1997-07-22 | WPKU648 | AUTHPR |
| 1997-07-22 | WPKU648 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1929420 | 2026-08-02 01:28:06 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPKU648 | ULS 1929420 | 2026-08-02 01:28:06 |
| Status | E | ULS 1929420 | 2026-08-02 01:28:06 |
| Service | YU | ULS 1929420 | 2026-08-02 01:28:06 |
| Grant Date | 1997-07-22 | ULS 1929420 | 2026-08-02 01:28:06 |
| Expiration Date | 2002-07-22 | ULS 1929420 | 2026-08-02 01:28:06 |
| Cancellation Date | 2002-11-24 | ULS 1929420 | 2026-08-02 01:28:06 |