MIL-A-28772C (NOTICE-1), MILITARY SPECIFICATION: ANTENNA, HIGH FREQUENCY (HF) FIXED ROTATABLE LOG PERIODIC (30-APR-1995)
MIL-A-28772C (NOTICE-1), MILITARY SPECIFICATION: ANTENNA, HIGH FREQUENCY (HF) FIXED ROTATABLE LOG PERIODIC (30-APR-1995)., MIL-A-28772C(EC) is inactive for new design and is no longer
used by the Navy except for replacement purposes.