Universal Licensing System
WPPE424
Crystal SMR Inc
License details
| ULS identifier | 1817036 |
|---|
| Call sign | WPPE424 |
|---|
| Radio service | IG |
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| Status | A |
|---|
| Grant date | 2024-10-17 |
|---|
| Expiration | 2034-11-09 |
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| Frequency range | 489.5375 - 492.5375 MHz (2 frequencies) |
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| Locations | 4 |
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| Representative location | NOVATO, MARIN, CA |
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| Coordinates | 38.0590833, -122.6038611 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:14:20 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB6 | 489.53750000 | | | 90.000000 | 291.000000 | |
| 2 | 1 | FB6 | 489.53750000 | | | 90.000000 | 163.000000 | |
| 3 | 1 | MO | 492.53750000 | | | 25.000000 | 63.000000 | |
| 4 | 1 | MO | 492.53750000 | | | 25.000000 | 63.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 489.53750000 | | 20K0F3E |
| 1 | 1 | 489.53750000 | | 11K0F3E |
| 2 | 1 | 489.53750000 | | 11K0F3E |
| 2 | 1 | 489.53750000 | | 20K0F3E |
| 3 | 1 | 492.53750000 | | 11K0F3E |
| 3 | 1 | 492.53750000 | | 20K0F3E |
| 4 | 1 | 492.53750000 | | 11K0F3E |
| 4 | 1 | 492.53750000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | BIG ROCK RIDGE, NOVATO, MARIN, CA | 38.05908333, -122.60386111 | 575.000 m | POLE | 25.000 m structure / 25.000 m overall | N |
| 2 | T | MOUNT VACA, VACAVILLE, SOLANO, CA | 38.40880556, -122.11052778 | 829.000 m | TOWER | 54.000 m structure / 61.000 m overall | N |
| 3 | T | | | | | | |
| 4 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 18.000 m | | | | 443.000 | |
| 1 | 2 | T | | 61.000 m | | | | 623.000 | |
| 1 | 3 | T | | | | | | | |
| 1 | 4 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 5610 SKYLANE STE B, SANTA ROSA, CA | SONOMA | 7075458300 |
License history
| Date | File or call sign | Action |
|---|
| 2025-01-30 | WPPE424 | LIASS |
| 2024-10-17 | WPPE424 | LIREN |
| 2014-11-17 | WPPE424 | LIREN |
| 2014-11-11 | WPPE424 | LTSAPR |
| 2014-08-18 | WPPE424 | LETRES |
| 2013-01-01 | WPPE424 | LIMOD |
| 2012-12-31 | WPPE424 | LTSAPR |
| 2004-11-03 | WPPE424 | LIREN |
| 2004-08-16 | WPPE424 | LETRES |
| 2002-04-04 | WPPE424 | LIMOD |
| 2001-10-11 | WPPE424 | AUDOPR |
| 2000-11-23 | WPPE424 | LICCNV |
| 1999-11-09 | WPPE424 | LIISS |
| 1999-11-09 | WPPE424 | AUTHPR |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1817036 | 2026-08-02 01:14:20 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPPE424 | ULS 1817036 | 2026-08-02 01:14:20 |
| Status | A | ULS 1817036 | 2026-08-02 01:14:20 |
| Service | IG | ULS 1817036 | 2026-08-02 01:14:20 |
| Grant Date | 2024-10-17 | ULS 1817036 | 2026-08-02 01:14:20 |
| Expiration Date | 2034-11-09 | ULS 1817036 | 2026-08-02 01:14:20 |