Universal Licensing System
KNKB251
American Messaging Services, LLC
License details
| ULS identifier | 1269 |
|---|
| Call sign | KNKB251 |
|---|
| Radio service | CD |
|---|
| Status | E |
|---|
| Grant date | 1999-04-27 |
|---|
| Expiration | 2008-06-15 |
|---|
| Cancellation | 2008-08-02 |
|---|
| Frequency range | 72.86 - 152.84 MHz (2 frequencies) |
|---|
| Locations | 5 |
|---|
| Representative location | JACKSONVILLE, DUVAL, FL |
|---|
| Coordinates | 30.3260556, -81.6586944 |
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| Source archive | l_paging.zip |
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| Dataset refreshed | 2026-08-02 02:52:24 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FXCT | 72.86000000 | | | | | |
| 1 | 1 | FBBS | 152.84000000 | | | | 448.000000 | |
| 2 | 1 | FBBS | 152.84000000 | | | | 500.000000 | |
| 3 | 1 | FBBS | 152.84000000 | | | | 430.000000 | |
| 4 | 1 | FBBS | 152.84000000 | | | | 500.000000 | |
| 5 | 1 | FBBS | 152.84000000 | | | | 500.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 72.86000000 | | 16K0F2D |
| 1 | 1 | 72.86000000 | | 15K0F2D |
| 1 | 1 | 72.86000000 | | 16K0F3E |
| 1 | 1 | 152.84000000 | | 16K0F3E |
| 1 | 1 | 152.84000000 | | 15K0F2D |
| 2 | 1 | 152.84000000 | | 16K0F1D |
| 2 | 1 | 152.84000000 | | 16K0F3E |
| 2 | 1 | 152.84000000 | | 15K0F2D |
| 3 | 1 | 152.84000000 | | 16K0F1D |
| 3 | 1 | 152.84000000 | | 15K0F2D |
| 3 | 1 | 152.84000000 | | 16K0F3E |
| 4 | 1 | 152.84000000 | | 15K0F2D |
| 4 | 1 | 152.84000000 | | 16K0F3E |
| 4 | 1 | 152.84000000 | | 16K0F1D |
| 5 | 1 | 152.84000000 | | 16K0F1D |
| 5 | 1 | 152.84000000 | | 15K0F2D |
| 5 | 1 | 152.84000000 | | 16K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | ONE INDEPENDANT LIFE BUILDING, JACKSONVILLE, DUVAL, FL | 30.32605556, -81.65869444 | | | | N |
| 2 | T | ONE MILE N OF HWY A1A ON BURNS RD., YULEE, NASSAU, FL | 30.60938889, -81.75536111 | 42.700 m | | | N |
| 3 | T | 5543 CARTER SPENCER ROAD, MIDDDLEBURGH, CLAY, FL | 30.06827778, -81.95925000 | 147.200 m | | | N |
| 4 | T | OFF STATE ROAD 16, 1 MILE EAST OF I-95, ST AUGUSTINE, ST. JOHNS, FL | 29.90383333, -81.38116667 | 99.100 m | | | N |
| 5 | T | 1037 S. 10TH STREET, PONTE VEDRA, DUVAL, FL | 30.27800000, -81.39702778 | 4.000 m | | 101.000 m overall | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | V | | | | |
| 1 | 2 | T | CELW PD-207 | | V | 3.0000 | 200.0000 | | |
| 1 | 3 | T | DECI DB-225 | 147.200 m | V | 5.0000 | 360.0000 | | |
| 1 | 4 | T | CELW PD-220 | | V | 8.5000 | 335.0000 | | |
| 1 | 5 | T | CELWAVE PD-220 | 83.000 m | V | | 360.0000 | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | ONE INDEPENDANT LIFE BUILDING, JACKSONVILLE, FL | | |
License history
| Date | File or call sign | Action |
|---|
| 2008-08-02 | KNKB251 | LIEXP |
| 2008-03-24 | KNKB251 | LETRES |
| 2007-06-27 | KNKB251 | LIAUA |
| 2007-06-27 | KNKB251 | ESUAPR |
| 2007-04-28 | KNKB251 | LIAUA |
| 2007-04-27 | KNKB251 | ESUAPR |
| 2007-02-17 | KNKB251 | LITRAN |
| 2007-01-09 | KNKB251 | ESUAPR |
| 2007-01-08 | KNKB251 | LIASS |
| 2006-08-30 | KNKB251 | LIASS |
| 2005-01-13 | KNKB251 | LETAFU |
| 2004-11-02 | KNKB251 | AUDOPR |
| 2004-09-28 | KNKB251 | LETAUS |
| 2003-05-28 | KNKB251 | LIASS |
| 2003-04-26 | KNKB251 | LITRAN |
| 2001-12-18 | KNKB251 | AUTHPR |
| 2001-08-31 | KNKB251 | LIASS |
| 2000-05-25 | KNKB251 | AUTHPR |
| 2000-05-24 | KNKB251 | AUTHPR |
| 2000-05-22 | KNKB251 | AUTHPR |
| 2000-05-22 | KNKB251 | INTDUP |
| 2000-05-16 | KNKB251 | LITRAN |
| 1999-07-23 | KNKB251 | LIAUA |
| 1999-04-27 | KNKB251 | LIREN |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1269 | 2026-08-02 02:52:17 | Source Primary |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | KNKB251 | ULS 1269 | 2026-08-02 02:52:24 |
| Status | E | ULS 1269 | 2026-08-02 02:52:24 |
| Service | CD | ULS 1269 | 2026-08-02 02:52:24 |
| Grant Date | 1999-04-27 | ULS 1269 | 2026-08-02 02:52:24 |
| Expiration Date | 2008-06-15 | ULS 1269 | 2026-08-02 02:52:24 |
| Cancellation Date | 2008-08-02 | ULS 1269 | 2026-08-02 02:52:24 |