MIL-STD-469 Radar Engineering Interface Requirements, Electromagnetic Compatibility See Notice 1 For Replacement InformationThis standard establishes the engineering interface requirements to control the electromagnetic emission and susceptibility characteristics of all new military radar equipment and systems operating between 100 megahertz MHz, and 100 gigahertz GHz, to ensure EMC in all intended operational environments, and to conserve the frequency spectrum available to military radar systems.

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MIL-STD-469B

5.2.1 Special application. In the special case where government radio navigation radars operate in the shared government/non-government band 9300-9500 MHz, an acceptable degree of EMC is deemed to be that degree of compatibility associated with commer cial-off-the-shelf (COTS) or non-developmental item (NDI) radar equipment. The vast prepondera nce of the use of this band by non-government domestic and foreign ships and aircra ft creates a situation where relatively inexpensive COTS or NDI equipment is available and at the same time equipment improvements w hich might be incorporated unilaterally by small numbers of government stations would hav e little effect on the band as a whole. Accordingly, government radio navigation radars to be operated in this band, having a rat ed peak power of 100 kW or less, are placed in group A with the understandi ng that government agencies would procure COTS or NDI equipment and that this exemption will be re-examined should the situation in this band change.

5.2.2 Application determination. The requirements under group B shall be applied to class 1

Spacebased radar systems on a case by case basis as determined by the contracting activity. Th e requirements under group B or group C shall be determined by the contracting activity for application, on

a case by case basis, to class 2 Spacebased radar systems and active spaceborne sensors.

5.2.3 Test parameters. Radar equipment and systems shall be tested under operation at tune d frequencies as specified in table III.

TABLE III. Test parameters and radar tuned frequencies.

1These radar tuned frequencies represent the minimum number to be used.

2In addition to F,

F , and F , eight more radar tuned frequencies are required for Category 2

L M H

radars: four frequencies approximately evenly-spaced between FL and FM

approximately evenly-spaced between FM and FH.

plus four frequencies

3F = lowest frequency for

operation in each band.

FM = mean frequency for each operating band.

FH = highest frequency for operation in each band.