6
QUESTIONS AND ANSWERS.
Q
My navtex screen is totally blank.
A
Check the inline fuse. Check that there is 12 volts on the power plug
with the centre positive. Try re-booting the navtex.
Q
When I come to my navtex the spectrum screen says "SET CLOCK".
A
The power has been interrupted and reset the clock to 00:00. You
will need to enter the current time if you want to use the timed channel
selection.
Q
I cannot receive certain stations or messages.
A
Check that these stations are in range and not programmed out.
Remember the same station has a different indent letter when
transmitting on National or International.
Q
I cannot receive any signals.
A
Ensure that correct local stations are programmed in. Check any
joints in the antenna cable and remake if necessary. Set the navtex to
receive all stations and all messages on the international channel.
Leave the navtex on overnight with all other equipment switched off
and no connection with shore supply. If your navtex then receives
messages, try switching other equipment back on to discover which
device is causing the problem.
Q
Why do I get poor results when in harbour ?
A
This is almost certainly caused by interference caused by other
electrical equipment. Shore power connections can conduct
interference on board. Charging systems and engine electrical
systems can also create a large amount of interference if not properly
suppressed.
Q
Can I run my navtex from the mains at home ?
A
Yes you can. You will need a 12 Volt regulated power supply.Do not
use an unregulated supply or battery charger as this could cause
damage. It is often necessary to connect the negative supply of the
navtex down to earth. The mains earth or a copper water pipe will
suffice.