Universal Licensing System
WQDM674
Signature Control Systems
License details
| ULS identifier | 2751910 |
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| Call sign | WQDM674 |
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| Radio service | IG |
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| Status | E |
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| Grant date | 2005-10-03 |
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| Expiration | 2015-10-03 |
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| Cancellation | 2015-12-05 |
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| Frequency range | 151.7 - 451.8 MHz (3 frequencies) |
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| Locations | 1 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:26:07 |
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Licensee
| Name | Signature Control Systems |
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| Applicant type | C |
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| FRN | 0013794383 |
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| Location | Irvine, CA |
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| Address | 4 Mason "B", Irvine, CA, 92618 |
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| Phone | 9495803640 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | MOI | 151.70000000 | | | 5.000000 | 5.000000 | |
| 1 | 1 | MOI | 158.40000000 | | | 5.000000 | 5.000000 | |
| 1 | 1 | MOI | 451.80000000 | | | 5.000000 | 5.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 151.70000000 | | 11K2F3E |
| 1 | 1 | 151.70000000 | | 11K2F1D |
| 1 | 1 | 158.40000000 | | 20K0F3E |
| 1 | 1 | 158.40000000 | | 20K0F1D |
| 1 | 1 | 158.40000000 | | 11K2F3E |
| 1 | 1 | 158.40000000 | | 11K2F1D |
| 1 | 1 | 451.80000000 | | 20K0F3E |
| 1 | 1 | 451.80000000 | | 11K2F3E |
| 1 | 1 | 451.80000000 | | 11K2F1D |
| 1 | 1 | 451.80000000 | | 20K0F1D |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 4 Mason "B", Irvine, CA | LOS ANGELES | 9495803640 |
License history
| Date | File or call sign | Action |
|---|
| 2015-12-05 | WQDM674 | LIEXP |
| 2015-07-13 | WQDM674 | LETRES |
| 2005-10-03 | WQDM674 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 2751910 | 2026-08-02 01:26:07 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WQDM674 | ULS 2751910 | 2026-08-02 01:26:07 |
| Status | E | ULS 2751910 | 2026-08-02 01:26:07 |
| Service | IG | ULS 2751910 | 2026-08-02 01:26:07 |
| Grant Date | 2005-10-03 | ULS 2751910 | 2026-08-02 01:26:07 |
| Expiration Date | 2015-10-03 | ULS 2751910 | 2026-08-02 01:26:07 |
| Cancellation Date | 2015-12-05 | ULS 2751910 | 2026-08-02 01:26:07 |