Universal Licensing System
WPKQ557
GREENFIELD ASSOCIATES
License details
| ULS identifier | 1749931 |
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| Call sign | WPKQ557 |
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| Radio service | IG |
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| Status | T |
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| Grant date | 1997-06-09 |
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| Expiration | 2002-06-09 |
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| Cancellation | 2002-03-22 |
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| Frequency range | 460.65 - 465.65 MHz (2 frequencies) |
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| Locations | 2 |
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| Representative location | LEWISTON, MONTMORENCY, MI |
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| Coordinates | 44.8400000, -84.2663889 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:14:00 |
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Licensee
| Name | GREENFIELD ASSOCIATES |
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| Applicant type | C |
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| FRN | 0006442529 |
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| Location | PASADENA, CA |
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| Address | 1256 CLUBHOUSE DR, PASADENA, CA, 91105 |
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| Phone | 8187990133 |
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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 | FB2 | 460.65000000 | | | 10.000000 | 15.000000 | |
| 2 | 1 | MO | 465.65000000 | | | 1.000000 | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 460.65000000 | | 16K0F2D |
| 2 | 1 | 465.65000000 | | 16K0F2D |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | HCR 1 BOX 364M, LEWISTON, MONTMORENCY, MI | 44.84000000, -84.26638889 | 300.000 m | B | 6.000 m structure / 8.000 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 | | 8.000 m | | | | -56.000 | |
| 1 | 2 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
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| 1 | 1256 CLUBHOUSE DR, PASADENA, CA | | 8187990133 |
License history
| Date | File or call sign | Action |
|---|
| 2002-03-22 | WPKQ557 | LITERM |
| 2002-03-18 | WPKQ557 | LETRES |
| 2001-11-06 | WPKQ557 | AUDCAN |
| 2000-11-23 | WPKQ557 | LICCNV |
| 1997-06-09 | WPKQ557 | AUTHPR |
| 1997-06-09 | WPKQ557 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
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| ULS | 1749931 | 2026-08-02 01:14:00 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WPKQ557 | ULS 1749931 | 2026-08-02 01:14:00 |
| Status | T | ULS 1749931 | 2026-08-02 01:14:00 |
| Service | IG | ULS 1749931 | 2026-08-02 01:14:00 |
| Grant Date | 1997-06-09 | ULS 1749931 | 2026-08-02 01:14:00 |
| Expiration Date | 2002-06-09 | ULS 1749931 | 2026-08-02 01:14:00 |
| Cancellation Date | 2002-03-22 | ULS 1749931 | 2026-08-02 01:14:00 |