7A006 Category 7A
Airborne altimeters operating at frequencies other than 4.2 to 4.4 GHz inclusive and having any of the following (see List of Items Controlled).
Category 7: Navigation and Avionics
Country chart
| Control | Column |
|---|---|
| AT applies to entire entry | AT 1 |
| MT applies to commodities in this entry that meet or exceed the parameters of 7A106 | MT 1 |
| NS applies to entire entry | NS 1 |
List-based license exceptions
Items
- a. 'Power management'; or
- b. Using phase shift key modulation.
Related controls
See also 7A106, 7A994 and Category 6 for controls on radar.
Notes
Technical Note: For the purposes of 7A006.a, 'power management' is changing the transmitted power of the altimeter signal so that received power at the “aircraft” altitude is always at the minimum necessary to determine the altitude.
Source: eCFR, version
2026-08-01, retrieved
2026-08-20T04:04:59+00:00.