105 CMR, § 122.291
Current through Register 1538, January 3, 2025
The following separation guide must be followed or separation distances submitted to and approved by the Director. The guide applies to the minimum distance that an antenna can be located from external surface of any habitable structure not located on the property containing the source and from habitable space on the same property normally occupied on a regular basis by others than the immediate family an/or employees of the owner and/or operator of the source.
| Frequency (MHz) Nearest | Minimum Distance From Current Maximum (feet) |
| less than 3 | 9.84 (KP/180,000) |
| 3 - 30 | 3.78 f(KP/180,00) |
| 30 - 300 | 3.28 (KP/200) |
| 300 - 1500 | 3.28 (3KP/2f) |
| greater than 1500 | 3.28 (KP/1000) |
f is the frequency in megahertz
P is the ERP in watts
K equals 7.96
In addition, the minimum separation from any radiating part of the antenna shall be of the above minimum separation from the nearest current maximum.
105 CMR, § 122.291