SSH EN 301 688 V1.2.1:2016

Technical characteristics and methods of measurement for fixed and portable VHF equipment operating on 121,5 MHz and 123,1 MHz

Scope

The present document specifies the minimum technical requirements for maritime two-way AM VHF radiotelephone
apparatus for communications between ships in distress and rescuing aircraft. The present document incorporates
relevant provisions of the ITU Radio Regulations [i.1], of IMO Resolutions A.694(17) [i.2] and MSC.80(70) [i.3] and
of annex 10 to the ICAO Convention [i.4].
The maritime VHF equipment described in the present document is intended for communications on the aeronautical
emergency frequencies 121,5 MHz and 123,1 MHz only.
The present document is applicable to portable and fixed installed equipment.
NOTE: This type of equipment is covered by the Maritime Equipment Directive [i.6] and its subsequent
revisions.