Universal Licensing System
KNNJ922
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
License details
| ULS identifier | 1631918 |
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| Call sign | KNNJ922 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2021-01-26 |
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| Expiration | 2031-02-08 |
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| Frequency range | 461.775 - 466.775 MHz (2 frequencies) |
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| Locations | 2 |
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| Representative location | Cambridge, MIDDLESEX, MA |
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| Coordinates | 42.3542778, -71.1044167 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:11:51 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 5 | 1 | FB2 | 461.77500000 | | | 25.000000 | 70.000000 | |
| 6 | 1 | MO | 461.77500000 | | | 5.000000 | 5.000000 | |
| 3 | 1 | FX1 | 466.77500000 | | | 6.000000 | 6.000000 | |
| 6 | 1 | MO | 466.77500000 | | | 5.000000 | 5.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 5 | 1 | 461.77500000 | | 11K0F3E |
| 6 | 1 | 461.77500000 | | 11K0F3E |
| 3 | 1 | 466.77500000 | | 11K0F3E |
| 6 | 1 | 466.77500000 | | 11K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 3 | T | MIDDLESEX, MA | | | | | N |
| 5 | T | 550 Memorial Drive Building W84, Cambridge, MIDDLESEX, MA | 42.35427778, -71.10441667 | 3.000 m | BANT | 95.100 m structure / 101.200 m overall | N |
| 6 | T | | | | | | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 3 | T | | | | | | | |
| 1 | 5 | T | | 101.200 m | | | | 80.100 | |
| 1 | 6 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 77 MASSACHUSETTS AVE, CAMBRIDGE, MA | MIDDLESEX | 6172531000 |
License history
| Date | File or call sign | Action |
|---|
| 2021-01-26 | KNNJ922 | LIREN |
| 2020-11-16 | KNNJ922 | LETRES |
| 2020-07-30 | KNNJ922 | LIMOD |
| 2014-03-14 | KNNJ922 | LIMOD |
| 2014-01-22 | KNNJ922 | AUTHPR |
| 2014-01-19 | KNNJ922 | FRATRM |
| 2013-11-13 | KNNJ922 | PNLISR |
| 2013-11-13 | KNNJ922 | LETTRS |
| 2013-07-02 | KNNJ922 | LETCNS |
| 2012-11-02 | KNNJ922 | LIAUA |
| 2012-11-01 | KNNJ922 | ESCAPR |
| 2012-10-01 | KNNJ922 | LIMOD |
| 2011-03-24 | KNNJ922 | AUTHPR |
| 2010-12-16 | KNNJ922 | LIREN |
| 2010-12-15 | KNNJ922 | ESCAPR |
| 2010-11-15 | KNNJ922 | LETRES |
| 2001-11-05 | KNNJ922 | AUDOPR |
| 2001-01-17 | KNNJ922 | LIREN |
| 2000-11-28 | KNNJ922 | LETRES |
| 2000-11-23 | KNNJ922 | LICCNV |
| 1996-02-08 | KNNJ922 | AUTHPR |
| 1996-02-08 | KNNJ922 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1631918 | 2026-08-02 01:11:51 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | KNNJ922 | ULS 1631918 | 2026-08-02 01:11:51 |
| Status | A | ULS 1631918 | 2026-08-02 01:11:51 |
| Service | IG | ULS 1631918 | 2026-08-02 01:11:51 |
| Grant Date | 2021-01-26 | ULS 1631918 | 2026-08-02 01:11:51 |
| Expiration Date | 2031-02-08 | ULS 1631918 | 2026-08-02 01:11:51 |