Universal Licensing System
WPCB522
CENTRAL AIR SYSTEMS
License details
| ULS identifier | 1707407 |
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| Call sign | WPCB522 |
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| Radio service | IG |
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| Status | E |
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| Grant date | 1998-04-20 |
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| Expiration | 2003-04-19 |
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| Cancellation | 2003-07-20 |
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| Frequency range | 30.8 MHz |
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| Locations | 2 |
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| Representative location | WALTHAM, MIDDLESEX, MA |
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| Coordinates | 42.3703611, -71.2306111 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:28:35 |
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Licensee
| Name | CENTRAL AIR SYSTEMS |
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| Applicant type | C |
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| Location | WALTHAM, MA |
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| Address | 38 YETTEN TER, WALTHAM, MA, 02154 |
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| Phone | 6178997110 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB | 30.80000000 | | | 110.000000 | 110.000000 | |
| 2 | 1 | MO | 30.80000000 | | | 110.000000 | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 30.80000000 | | 20K0F3E |
| 2 | 1 | 30.80000000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 38 YETTEN TERRACE, WALTHAM, MIDDLESEX, MA | 42.37036111, -71.23061111 | 15.000 m | | 12.000 m structure / 12.000 m overall | N |
| 2 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 27.000 m | | | | | |
| 1 | 2 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
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| 1 | 38 YETTEN TER, WALTHAM, MA | | 6178997110 |
License history
| Date | File or call sign | Action |
|---|
| 2003-07-20 | WPCB522 | LIEXP |
| 2003-01-21 | WPCB522 | LETRES |
| 2001-09-17 | WPCB522 | AUDOPR |
| 2000-11-23 | WPCB522 | LICCNV |
| 1998-04-20 | WPCB522 | LIREN |
| 1998-04-20 | WPCB522 | AUTHPR |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1707407 | 2026-08-02 01:28:35 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPCB522 | ULS 1707407 | 2026-08-02 01:28:35 |
| Status | E | ULS 1707407 | 2026-08-02 01:28:35 |
| Service | IG | ULS 1707407 | 2026-08-02 01:28:35 |
| Grant Date | 1998-04-20 | ULS 1707407 | 2026-08-02 01:28:35 |
| Expiration Date | 2003-04-19 | ULS 1707407 | 2026-08-02 01:28:35 |
| Cancellation Date | 2003-07-20 | ULS 1707407 | 2026-08-02 01:28:35 |