Path 4 of Microwave License WRDM690
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Path 4:
Chelmsford Police HQ ⇢ Doris Drive
Transmit and Receive Locations
Chelmsford Police HQ
| Radio Service | MW - Microwave Public Safety Pool |
| Transmit Location | Chelmsford Police HQ |
| Transmitter Callsign | WRDM690 |
| Type | Transmitter |
| Height to Center | 80.1ft / 24.4m |
| Antenna Make | RADIO WAVES INC. |
| Antenna Model | HP2-18 |
| Polarization | V |
| Tilt | 0.4° |
| Gain | 38.6dBi |
| Beamwidth | 2.0° |
| Azimuth | 289.7° |
| Location Type | Fixed |
| Location Class | Transmit Location |
| Address | 2 Olde North Rd |
| City | Chelmsford |
| County | MIDDLESEX |
| State | MA |
| Elevation (AMSL) | 159.1ft / 48.5m |
| Height of Structure | 85.0ft / 25.9m |
| Overall Height | 89.9ft / 27.4m |
| Structure Type | LTOWER - Lattice Tower |
| Lat / Lon | 42-37-12.90 N, 071-22-04.20 W |
1: Chelmsford Police HQ - Doris Drive
| Segment Length | 2.315321mi / 3.726149km |
| Receive Location | Doris Drive |
| Type | Receiver |
| Height to Center | 151.9ft / 46.3m |
| Antenna Make | RADIO WAVES INC. |
| Antenna Model | HP2-18 |
| Gain | 38.6° |
| Beamwidth | 2.0° |
| Location Type | Fixed |
| Location Class | Receive Location |
| Elevation (AMSL) | 179.1ft / 54.6m |
| Lat / Lon | 42-37-53.50 N, 071-24-38.20 W |
Frequencies and Modulations
| Frequencies | Tolerance | EIRP | ATPC | Emission, Digital Mod Rate, Digital Mod Type | Transmitter Make | Transmitter Model |
|---|
| 1: 19675.00000000 | 0.00100% | 55.1dBm | N | 26M8D7W, 118000.0, 32QAM
| DragonWave | 18HY30EFC118v02haam |
| 2: 19675.00000000 | 0.00100% | 55.1dBm | N | 26M8D7W, 92000.0, 16QAM
| DragonWave | 18HY30EFC092v02haam |
| 3: 19675.00000000 | 0.00100% | 55.1dBm | N | 26M8D7W, 39000.0, QPSK
| DragonWave | 18HY30EFC039v02haam |
|
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