This standard specifies the basic performance, interchangeability, and testability requirements for airborne VHF omnidirectional beacon receiving equipment (including pointing beacon receivers). This standard applies to the design and installation of civilian airborne even frequency omnidirectional beacon receiving equipment working in the range of 108.00 to 117.95MHz.
HB 6558-1991 history
1992HB 6558-1991 Basic Performance and Requirements of Airborne VHF Omnidirectional Beacon Receiving Equipment