Universal Licensing System
WYH557
SILICON SYSTEMS INC
License details
| ULS identifier | 1765082 |
|---|
| Call sign | WYH557 |
|---|
| Radio service | IG |
|---|
| Status | E |
|---|
| Grant date | 1996-10-28 |
|---|
| Expiration | 2001-10-25 |
|---|
| Cancellation | 2002-03-31 |
|---|
| Frequency range | 464.425 MHz |
|---|
| Locations | 2 |
|---|
| Representative location | TUSTIN, ORANGE, CA |
|---|
| Coordinates | 33.7147500, -117.8000556 |
|---|
| Source archive | l_LMpriv.zip |
|---|
| Dataset refreshed | 2026-08-02 01:26:25 |
|---|
Licensee
| Name | SILICON SYSTEMS INC |
|---|
| Applicant type | C |
|---|
| Location | TUSTIN, CA |
|---|
| Address | 14351 MYFORD RD, TUSTIN, CA, 92680 |
|---|
| Phone | 7147317110 |
|---|
Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB | 464.42500000 | | | 110.000000 | 250.000000 | |
| 2 | 1 | MO | 464.42500000 | | | 5.000000 | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 464.42500000 | | 20K0F3E |
| 2 | 1 | 464.42500000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 14351 MYFORD RD, TUSTIN, ORANGE, CA | 33.71475000, -117.80005556 | 21.000 m | | 11.000 m structure / 11.000 m overall | N |
| 2 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 11.000 m | | | | | |
| 1 | 2 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 14351 MYFORD RD, TUSTIN, CA | | 7147317110 |
License history
| Date | File or call sign | Action |
|---|
| 2002-03-31 | WYH557 | LIEXP |
| 2001-10-29 | WYH557 | LETAUS |
| 2001-07-30 | WYH557 | LETRES |
| 2000-11-23 | WYH557 | LICCNV |
| 1996-10-28 | WYH557 | AUTHPR |
| 1996-10-28 | WYH557 | LIREN |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1765082 | 2026-08-02 01:26:25 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WYH557 | ULS 1765082 | 2026-08-02 01:26:25 |
| Status | E | ULS 1765082 | 2026-08-02 01:26:25 |
| Service | IG | ULS 1765082 | 2026-08-02 01:26:25 |
| Grant Date | 1996-10-28 | ULS 1765082 | 2026-08-02 01:26:25 |
| Expiration Date | 2001-10-25 | ULS 1765082 | 2026-08-02 01:26:25 |
| Cancellation Date | 2002-03-31 | ULS 1765082 | 2026-08-02 01:26:25 |