Universal Licensing System
KNNP629
EFFICIENCY PRODUCTION INC
License details
| ULS identifier | 1633716 |
|---|
| Call sign | KNNP629 |
|---|
| Radio service | IG |
|---|
| Status | A |
|---|
| Grant date | 2021-04-02 |
|---|
| Expiration | 2031-04-02 |
|---|
| Frequency range | 462.25 - 464.55 MHz (3 frequencies) |
|---|
| Locations | 2 |
|---|
| Representative location | MASON, INGHAM, MI |
|---|
| Coordinates | 42.5686389, -84.4419167 |
|---|
| Source archive | l_LMpriv.zip |
|---|
| Dataset refreshed | 2026-08-02 01:14:40 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 2 | 1 | FB | 462.25000000 | | | 30.000000 | 90.000000 | |
| 3 | 1 | MO | 462.25000000 | | | 30.000000 | 30.000000 | |
| 2 | 1 | FB | 462.42500000 | | | 30.000000 | 90.000000 | |
| 3 | 1 | MO | 462.42500000 | | | 30.000000 | 30.000000 | |
| 1 | 1 | MO | 464.55000000 | | | 30.000000 | 30.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 2 | 1 | 462.25000000 | | 11K2F3E |
| 3 | 1 | 462.25000000 | | 11K2F3E |
| 2 | 1 | 462.42500000 | | 11K2F3E |
| 3 | 1 | 462.42500000 | | 11K2F3E |
| 1 | 1 | 464.55000000 | | 11K2F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | INGHAM, MI | 42.56863889, -84.44191667 | | | | |
| 2 | T | 685 HULL ROAD, MASON, INGHAM, MI | 42.56863889, -84.44191667 | 283.000 m | BANT | 10.000 m structure / 13.000 m overall | N |
| 3 | T | | | | | | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | | | | | |
| 1 | 2 | T | | 13.000 m | | | | 17.400 | |
| 1 | 3 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 685 HULL RD, MASON, MI | INGHAM | 5176768800 |
License history
| Date | File or call sign | Action |
|---|
| 2021-07-19 | KNNP629 | LIMOD |
| 2021-05-18 | KNNP629 | LIMOD |
| 2021-04-02 | KNNP629 | LIREN |
| 2021-01-04 | KNNP629 | LETRES |
| 2012-10-02 | KNNP629 | LIMOD |
| 2012-07-11 | KNNP629 | ESUAPR |
| 2011-04-28 | KNNP629 | LTSAPR |
| 2011-04-28 | KNNP629 | LIAUA |
| 2011-04-27 | KNNP629 | EFUAPR |
| 2011-04-27 | KNNP629 | ESUAPR |
| 2011-03-24 | KNNP629 | AUTHPR |
| 2011-03-23 | KNNP629 | LIREN |
| 2011-03-23 | KNNP629 | LTSAPR |
| 2011-01-10 | KNNP629 | LETRES |
| 2006-06-22 | KNNP629 | LIAUA |
| 2006-06-22 | KNNP629 | LTSAPR |
| 2004-07-09 | KNNP629 | LTSAPR |
| 2004-06-30 | KNNP629 | AUTHPR |
| 2004-06-29 | KNNP629 | COR |
| 2004-06-29 | KNNP629 | INTDUP |
| 2004-06-23 | KNNP629 | PNACT |
| 2004-06-10 | KNNP629 | LITERM |
| 2004-06-10 | KNNP629 | LETACS |
| 2001-04-04 | KNNP629 | LIREN |
| 2001-01-09 | KNNP629 | LETRES |
| 2000-11-23 | KNNP629 | LICCNV |
| 1996-04-02 | KNNP629 | LIISS |
| 1996-04-02 | KNNP629 | AUTHPR |
| KNNP629 | AUDCAN |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1633716 | 2026-08-02 01:14:40 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | KNNP629 | ULS 1633716 | 2026-08-02 01:14:40 |
| Status | A | ULS 1633716 | 2026-08-02 01:14:40 |
| Service | IG | ULS 1633716 | 2026-08-02 01:14:40 |
| Grant Date | 2021-04-02 | ULS 1633716 | 2026-08-02 01:14:40 |
| Expiration Date | 2031-04-02 | ULS 1633716 | 2026-08-02 01:14:40 |