Before I type and display my ignorance here about the ARPA issue, are we
talking about an 1830 or 1833? I see both mentioned in the trail.
IF I had an 1830 radar, I would want to make sure it has a version 08 or
higher EPROM and the revised modulator board in the scanner. Otherwise you a
prime candidate for blown modulator FETs. To determine the EPROM version,
turn on the radar and during the initial Time Delay before the radar can be
switched to transmit, the Resident Version of the EPROM is displayed on the
CRT. The last two digits on the right indicate the EPROM version. Version
08, 09, etc means an OK system. Version 07 and below, get the modification
done requiring a new EPROM in the display and new modulator board in the
scanner. Back in 1990 Furuno covered this as a warranty item. No idea if it
is still covered.
Compass input to the Furuno is via the gyro inputs and may be from their
AD100 conversion box or a flux gate compass, such as Furuno, KVH, etc. There
was a wiring change in mid production of the gyro connector, so make sure
you have your manual handy to match what you have.
As I see it, for an 1830, NMEA will give you lat/long, speed and
range/bearing to a waypoint.. It is not used for compass. Pin 3 of the
Furuno NMEA cable is receive data +, and pin 4 is receive data -.
Doug K7ABX

"Bruce in Alaska" wrote in message
...
In article ,
"Andy K." wrote:

The ARP11 (10 target ARPA) is listed as an option for your radar. As far
as
the data connection between the GPS and radar, if the Garmin cable is
the
same as most of the others they make it would have some un-terminated
wires
plus the red and black for power. You need the NEMA data cable for the
radar
(the one with the bare ends). Nothing more then connecting 2 wires from
each
cable and setting up the data outputs and inputs on each unit. Sorry I
can't
remember the colors you need to connect and the info is at work.

Andy K.

I am under the impression that ARP is and add on option for all the
small commercial Furuo Radars. I am not 100% sure on that exact model
(1833) but I bet Doug could give us a difinitive answer. Any add on
option is going to cost BIG BUCKS, however and probubly not worth the
cash for a noncommercial users. The standard NEMA input for these type
Furuno Radars is to display the Position Information, Speed, Course over
Ground, and Next Waypoint Bearing and Distance, at the bottom of the
screen in the NAV Info Position. If you want the Waypoint Popsicle to
display on the screen, then you must input Compass Data on the Gyro
Input, and that is a seperate connection from the NEMA Input. All the
Furuno's I have dealt with will NOT accept Compass Data from the NEMA
Data Stream, but only on the Gyro Input.


Bruce in alaska
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add a 2 before @