Universal Licensing System
KPL461
TTWN Networks, LLC
License details
| ULS identifier | 1121555 |
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| Call sign | KPL461 |
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| Radio service | RP |
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| Status | A |
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| Grant date | 2020-09-17 |
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| Expiration | 2028-10-01 |
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| Frequency range | 450.2375 - 455.9125 MHz (3 frequencies) |
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| Locations | 1 |
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| Representative location | Silver Spring, MONTGOMERY, MD |
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| Coordinates | 38.9950556, -77.0313889 |
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| Source archive | l_LMbcast.zip |
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| Dataset refreshed | 2026-08-02 00:37:43 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 2 | FB | 450.23750000 | | | 25.000000 | 21.020000 | |
| 2 | 1 | MO | 450.23750000 | | | 25.000000 | 52.000000 | |
| 1 | 1 | FB | 450.91250000 | | | 25.000000 | 52.000000 | |
| 2 | 1 | MO | 450.91250000 | | | 25.000000 | 52.000000 | |
| 1 | 1 | FB | 455.91250000 | | | 25.000000 | 52.000000 | |
| 2 | 1 | MO | 455.91250000 | | | 25.000000 | 52.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 2 | 450.23750000 | | 25K0F3E |
| 2 | 1 | 450.23750000 | | 25K0F3E |
| 1 | 1 | 450.91250000 | | 25K0F3E |
| 2 | 1 | 450.91250000 | | 25K0F3E |
| 1 | 1 | 455.91250000 | | 25K0F3E |
| 2 | 1 | 455.91250000 | | 25K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 8403 Colesville Road, Silver Spring, MONTGOMERY, MD | 38.99505556, -77.03138889 | 100.800 m | BANT | 77.700 m structure / 80.800 m overall | N |
| 2 | T | Silver Spring, MONTGOMERY, MD | 38.99505556, -77.03138889 | | | | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 80.800 m | V | 5.0000 | 360.0000 | 100.800 | |
| 1 | 2 | T | | | | | | | |
| 2 | 1 | T | | 80.800 m | V | 5.0000 | 360.0000 | 100.800 | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 8403 Colesville Road, Silver Spring, MD | MONTGOMERY | 3016282460 |
License history
| Date | File or call sign | Action |
|---|
| 2020-09-17 | KPL461 | LIREN |
| 2020-07-06 | KPL461 | LETRES |
| 2019-12-31 | KPL461 | LITRAN |
| 2019-05-01 | KPL461 | LIASS |
| 2018-04-24 | KPL461 | LIASS |
| 2017-08-23 | KPL461 | LIAUA |
| 2016-05-03 | KPL461 | LIAUA |
| 2016-05-02 | KPL461 | ESCAPR |
| 2015-07-02 | KPL461 | LITRAN |
| 2015-06-19 | KPL461 | ESUAPR |
| 2012-10-02 | KPL461 | LIREN |
| 2012-10-01 | KPL461 | ESCAPR |
| 2012-07-09 | KPL461 | LETRES |
| 2011-07-13 | KPL461 | LITRAN |
| 2011-07-13 | KPL461 | LTSAPR |
| 2011-05-30 | KPL461 | LTSAPR |
| 2011-05-28 | KPL461 | LIAUA |
| 2011-04-29 | KPL461 | LIASS |
| 2011-04-29 | KPL461 | ESUAPR |
| 2010-06-15 | KPL461 | LIASS |
| 2010-06-04 | KPL461 | ESUAPR |
| 2009-04-23 | KPL461 | LITRAN |
| 2009-04-15 | KPL461 | ESCAPR |
| 2002-10-02 | KPL461 | LIREN |
| 2002-07-08 | KPL461 | LETRES |
| 2002-02-14 | KPL461 | LIMOD |
| 2001-08-25 | KPL461 | LIAUA |
| 2000-09-15 | KPL461 | LICCNV |
| 1999-04-13 | KPL461 | AUTHPR |
| 1995-11-20 | KPL461 | LIAUA |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1121555 | 2026-08-02 00:37:43 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | KPL461 | ULS 1121555 | 2026-08-02 00:37:43 |
| Status | A | ULS 1121555 | 2026-08-02 00:37:43 |
| Service | RP | ULS 1121555 | 2026-08-02 00:37:43 |
| Grant Date | 2020-09-17 | ULS 1121555 | 2026-08-02 00:37:43 |
| Expiration Date | 2028-10-01 | ULS 1121555 | 2026-08-02 00:37:43 |