This specification covers insulated wire for use in external aircraft antennas.

Classification:

The insulated wire shall be of three types determined by differences in conductor material, as specified (see 6.2):

Type I - Copper-covered steel, Part No. 6370-1.

Type II ¹ - Copper-covered steel, Part No. 6370-2.

Type III - Beryllium copper, Part No. 6370-3.

^1. Type II wire is cancelled for all new and existing designs and future procurements. Existing stocks of Type II wire may be used until exhausted. For future design, replacement, and procurement, Type I - Copper-covered steel Part No. 6370-1 shall be specified to replace the cancelled Type II.