JRC JAN-7201 - Attribute: Reference Year for Magnetic Variation

Appendix B Menu List and Materials B-108
Indication:
the wavelength and the band code character is indicated;
In the case where two bands should be encoded, these should be separated by a comma.
Unit : m
resolution: 0.01 m
Format:
V.VV-B
V.VV-B,V.VV-B
'VV.VV' encodes the value of wavelength.
'B' encodes the band;
each separated by a hyphen ('-')
Example:
the radar transponder beacon wavelength '3cm (X) - Band' is indicated as '0.03-X'
Remarks:
The attribute 'radar transponder beacon wavelength' encodes the specific wavelength at which
a radar
transponder beacon transmits.
Radar transponder beacons generally work on the following wavelengths:
- 3cm (X) - Band
- 10cm (S) - Band
Nevertheless, wavelengths outside the marine band are used.
Attribute: Reference year for magnetic variation
Acronym: RYRMGV Code: 130
Attribute type: A
Definition:
The reference calendar year for magnetic variation values.
References:
INT 1: IB 68.1, 70-71;
M-4: 270;
Indication:
the 'reference calendar year for magnetic variation' should be encoded using a 4 digit
year-indication
(CCYY).
Format:
CCYY (mandatory)