Universal Licensing System
WPMK421
ERICKSON CONTRACT SURVEYING INC
License details
| ULS identifier | 1796025 |
|---|
| Call sign | WPMK421 |
|---|
| Radio service | IG |
|---|
| Status | E |
|---|
| Grant date | 1998-08-20 |
|---|
| Expiration | 2003-08-20 |
|---|
| Cancellation | 2003-10-26 |
|---|
| Frequency range | 151.625 - 469.55 MHz (5 frequencies) |
|---|
| Locations | 2 |
|---|
| Source archive | l_LMpriv.zip |
|---|
| Dataset refreshed | 2026-08-02 01:16:48 |
|---|
Licensee
| Name | ERICKSON CONTRACT SURVEYING INC |
|---|
| Applicant type | C |
|---|
| FRN | 0008759706 |
|---|
| Location | SIDNEY, MT |
|---|
| Address | 1101 5TH ST SW, SIDNEY, MT, 59270 |
|---|
| Phone | 4064826606 |
|---|
Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 2 | 1 | MOI | 151.62500000 | | | 45.000000 | | |
| 1 | 1 | MOI | 464.50000000 | | | 35.000000 | | |
| 1 | 1 | MOI | 464.55000000 | | | 35.000000 | | |
| 1 | 1 | MOI | 469.50000000 | | | 35.000000 | | |
| 1 | 1 | MOI | 469.55000000 | | | 35.000000 | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 2 | 1 | 151.62500000 | | 20K0F3E |
| 1 | 1 | 464.50000000 | | 20K0F1D |
| 1 | 1 | 464.55000000 | | 20K0F1D |
| 1 | 1 | 469.50000000 | | 20K0F1D |
| 1 | 1 | 469.55000000 | | 20K0F1D |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | | | | | | |
| 2 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | | | | | |
| 1 | 2 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | | | 4064826606 |
License history
| Date | File or call sign | Action |
|---|
| 2003-10-26 | WPMK421 | LIEXP |
| 2003-05-27 | WPMK421 | LETRES |
| 2000-11-23 | WPMK421 | LICCNV |
| 1998-08-20 | WPMK421 | AUTHPR |
| 1998-08-20 | WPMK421 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1796025 | 2026-08-02 01:16:48 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPMK421 | ULS 1796025 | 2026-08-02 01:16:48 |
| Status | E | ULS 1796025 | 2026-08-02 01:16:48 |
| Service | IG | ULS 1796025 | 2026-08-02 01:16:48 |
| Grant Date | 1998-08-20 | ULS 1796025 | 2026-08-02 01:16:48 |
| Expiration Date | 2003-08-20 | ULS 1796025 | 2026-08-02 01:16:48 |
| Cancellation Date | 2003-10-26 | ULS 1796025 | 2026-08-02 01:16:48 |