47 CFR 74.644 - Minimum path lengths for fixed links.
|Frequency band(MHz)||Minimum path length(km)|
(a) The distance between end points of a fixed link must equal or exceed the value set forth in the table below or the EIRP must be reduced in accordance with the equation set forth below.
|Minimum path length
(b) For paths shorter than those specified in the Table, the EIRP shall not exceed the value derived from the following equation.
For transmitters using Automatic Transmitter Power Control, EIRP corresponds to the maximum transmitter power available, not the coordinated transmit power or the nominal transmit power.
Stations licensed based on an application filed before April 16, 2003, in the 2450-2483.5 MHz band, for EIRP values exceeding those specified above, may continue to operate indefinitely in accordance with the terms of their current authorizations, subject to periodic renewal.
(c) Upon an appropriate technical showing, applicants and licensees unable to meet the minimum path length requirement may be granted an exception to these requirements.
Links authorized prior to April 1, 1987, are excluded from this requirement, except that, effective April 1, 1992, the Commission will require compliance with the criteria where an existing link would otherwise preclude establishment of a new link.
Title 47 published on 2014-10-01
The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 47 CFR Part 74 after this date.