Height offsets for non-conforming GNSS antennas

 

 

 

 

 

A new international standard definition of the antenna reference point (ARP) has resulted in a vertical change for some antennas with removable adapters or special-purpose masts. Such antennas are listed below to help you identify your ARP and determine your antenna height.

Before You Go In The Field

Refer to the antenna calibration drawings to locate the ARP for your antenna type. You will need this to properly measure your antenna height, or compute it using a slant height measurement.

After Returning From The Field

If you used one of the antennas listed below and measured only to the bottom of the adapter or optional mast, then you will need to add the length of that adapter or mast to bring the total height up to the ARP. The table below provides known height offsets for some adapters or poles.

The antennas below have multiple configurations.
Please take extra care to indentify the ARP location in relation to your antenna mount.

NOTE:
Some ARPs were moved, and relative calibrations shifted, when absolute calibrations were performed:

Non-Conforming Antenna Model		height offset	relative calibration & drawing updated?
	JAV_TRIUMPH-1	AS OF 12/22/2014: THESE ANTENNAS REMAIN AS ORIGINALLY DEFINED. SEE ANTENNA CALIBRATION FOR CURRENT ARP DEFINITIONS.   When these placeholders disappear, the new definitions are in effect.
	JAV_TRIUMPH-1R
	JAVTRIUMPH_2
	JAVTRIUMPH_2A
	JAVTRIUMPH_LS
	JAVTRIUMPH_LSA
	JAVTRIUMPH_1M
	JAVTRIUMPH_1MR