Date, May 1st 2002
User Guide Addendum; NAV6 User Guide
Issue; 1.2
ICS Document; man3008.03

NAV6 NAVTEX sensors are now supplied without an 'whip extension'
Following further development of the NAVTEX sensor the extension whip has been deleted as being unnecessary.
This late change is not shown in the current version of the NAV6 user guide.

Pages concerned; Page 20
Replace section headed ; 'Mounting the 45cm Extension Whip' with the following new section;

Sensor Extension Whip Option
Provided the NAVTEX sensor has been mounted in accordance with the fitting instructions, the optional ‘whip extension’ is not required.
In the unavoidable event that the sensor installation is compromised in someway that results in inadequate reception performance, first consider moving the sensor to a more suitable location.
If this is not possible, the optional whip extension could be tried, however any resulting improvement to reception is likely to be dependent on several factors. 

45cm whip extension option - ICS part number 6010.07

Date, March 1st 2002
User Guide Addendum; NAV6plus User Guide
Issue; 1.5 
ICS Document; man3008.00

NAV6plus NAVTEX sensors are now supplied without an 'whip extension'
Following further development of the NAVTEX sensor the extension whip has been deleted as being unnecessary.
This late change is not shown in the current version of the NAV6plus user guide.

Pages concerned; Page 30
Replace section headed ; 'Mounting the 45cm Extension Whip' with the following new section;

Sensor Extension Whip Option
Provided the NAVTEX sensor has been mounted in accordance with the fitting instructions, the optional ‘whip extension’ is not required.
In the unavoidable event that the sensor installation is compromised in someway that results in inadequate reception performance, first consider moving the sensor to a more suitable location.
If this is not possible, the optional whip extension could be tried, however any resulting improvement to reception is likely to be dependent on several factors.