Universal Licensing System
KNBP957
SUBSURFACE CONSTRUCTORS INC
License details
| ULS identifier | 1850225 |
|---|
| Call sign | KNBP957 |
|---|
| Radio service | IG |
|---|
| Status | E |
|---|
| Grant date | 1996-09-16 |
|---|
| Expiration | 2001-12-03 |
|---|
| Cancellation | 2002-05-05 |
|---|
| Frequency range | 30.58 MHz |
|---|
| Locations | 2 |
|---|
| Representative location | CLAYTON, ST. LOUIS, MO |
|---|
| Coordinates | 38.6506111, -90.3348333 |
|---|
| Source archive | l_LMpriv.zip |
|---|
| Dataset refreshed | 2026-08-02 01:27:17 |
|---|
Licensee
| Name | SUBSURFACE CONSTRUCTORS INC |
|---|
| Applicant type | U |
|---|
| Location | ST LOUIS, MO |
|---|
| Address | 110 ANGELICA ST, ST LOUIS, MO, 63147 |
|---|
| Phone | 3144212460 |
|---|
Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | MO | 30.58000000 | | | 100.000000 | | |
| 2 | 1 | FB | 30.58000000 | | | 100.000000 | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 30.58000000 | | 20K0F3E |
| 2 | 1 | 30.58000000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | | | | | | |
| 2 | T | 7701 FORSYTH, CLAYTON, ST. LOUIS, MO | 38.65061111, -90.33483333 | 183.000 m | | | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | | | | | |
| 1 | 2 | T | | 94.000 m | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 110 ANGELICA ST, SAINT LOUIS, MO | | 3144212460 |
License history
| Date | File or call sign | Action |
|---|
| 2002-05-05 | KNBP957 | LIEXP |
| 2001-11-23 | KNBP957 | AUDCAN |
| 2001-09-10 | KNBP957 | LETRES |
| 2000-11-24 | KNBP957 | LICCNV |
| 1996-09-16 | KNBP957 | AUTHPR |
| 1996-09-16 | KNBP957 | LIREN |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1850225 | 2026-08-02 01:27:17 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | KNBP957 | ULS 1850225 | 2026-08-02 01:27:17 |
| Status | E | ULS 1850225 | 2026-08-02 01:27:17 |
| Service | IG | ULS 1850225 | 2026-08-02 01:27:17 |
| Grant Date | 1996-09-16 | ULS 1850225 | 2026-08-02 01:27:17 |
| Expiration Date | 2001-12-03 | ULS 1850225 | 2026-08-02 01:27:17 |
| Cancellation Date | 2002-05-05 | ULS 1850225 | 2026-08-02 01:27:17 |