Universal Licensing System
WHH681
Rockwell Collins, Inc.
License details
| ULS identifier | 981700 |
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| Call sign | WHH681 |
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| Radio service | MG |
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| Status | E |
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| Grant date | 1997-12-03 |
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| Expiration | 2002-12-03 |
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| Cancellation | 2003-03-09 |
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| Frequency range | 12370 - 18925 MHz (2 frequencies) |
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| Locations | 3 |
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| Representative location | CEDAR RAPIDS, LINN, IA |
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| Coordinates | 42.0316389, -91.6412778 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:45:33 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FXO | 12370.00000000 | | | | | |
| 1 | 2 | FXO | 18925.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 12370.00000000 | | 20M0F7W |
| 1 | 2 | 18925.00000000 | | 10M0F7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 400 COLLINS RD NE, CEDAR RAPIDS, LINN, IA | 42.03163889, -91.64127778 | 259.400 m | | 11.300 m structure / 23.500 m overall | |
| 2 | R | | 42.01275000, -91.64766667 | 237.400 m | | | |
| 3 | R | | 42.03663889, -91.65738889 | 256.000 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | V | 41.5000 | 194.2000 | | |
| 1 | 2 | R | | | | 41.5000 | | | |
| 1 | 3 | R | | | | 38.9000 | | | |
| 2 | 1 | T | | | V | 38.9000 | 292.6000 | | |
License history
| Date | File or call sign | Action |
|---|
| 2003-03-09 | WHH681 | LIEXP |
| 2002-09-09 | WHH681 | LETRES |
| 2001-07-02 | WHH681 | LIASS |
| 1999-08-13 | WHH681 | LICCNV |
| 1998-08-11 | WHH681 | LIAUA |
| 1997-12-03 | WHH681 | LIREN |
| 1997-03-11 | WHH681 | LIASS |
| 1992-06-04 | WHH681 | LIMOD |
| 1992-04-25 | WHH681 | LIMOD |
| 1987-06-05 | WHH681 | LIMOD |
| 1982-07-21 | WHH681 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 981700 | 2026-08-02 02:45:33 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WHH681 | ULS 981700 | 2026-08-02 02:45:33 |
| Status | E | ULS 981700 | 2026-08-02 02:45:33 |
| Service | MG | ULS 981700 | 2026-08-02 02:45:33 |
| Grant Date | 1997-12-03 | ULS 981700 | 2026-08-02 02:45:33 |
| Expiration Date | 2002-12-03 | ULS 981700 | 2026-08-02 02:45:33 |
| Cancellation Date | 2003-03-09 | ULS 981700 | 2026-08-02 02:45:33 |