Thats why I'm looking at the brookhouse nmea mux. It says "The optional 5th
input port can be used for connection of a NMEA-HS talker such as an AIS
receiver. This port can also be configured for a normal low-speed NMEA
device" and customer evidence seems sucessfull.

Bjarke


"Larry" wrote in message
...
"Bjarke M. Christensen" bjarkeNG@grevestrand_punktum_danmark wrote in
:

a new AIS blackbox, I'd
like to get AIS information on the Garm292 apart from ofcause to be
able to control the Gram292 from the PC for up/downloading.


Look carefully at the AIS black box manual. Notice how it says it runs at
ONLY 38,800 baud (bits/second)? NMEA is 4800 baud and won't go 38,800
baud. The Noland multiplexer has an OUTPUT you can get 38,800 baud OUT
of,
but no INPUT to feed the 38,800 baud AIS black box INTO. Why AIS boxes
meant to be plugged into a BOAT, 99% of which are running 4800 baud
NMEA0183 V2 or 3, doesn't run 4800 Baud NMEA data output probably isn't a
mystery. NMEA wants big LICENSING FEES for their turf and the Chinese AIS
manufacturers didn't pony up.

I'm staring at how to interface it all on Lionheart with AIS. It sucks.

"Bjarke M. Christensen" bjarkeNG@grevestrand_punktum_danmark wrote in
:

Thats why I'm looking at the brookhouse nmea mux. It says "The
optional 5th input port can be used for connection of a NMEA-HS talker
such as an AIS receiver. This port can also be configured for a
normal low-speed NMEA device" and customer evidence seems sucessfull.



That's the correct mux for an AIS receiver installation, not the Noland
my Cap'n bought at the boat show. It has no 38,800 baud input.

I've emailed the appropriate webpages to him and hope he can return the
uninstalled Noland. Thanks for the information on the Brookhouse. All
our sailing instruments are B&G "Network" instrument, the now-
discontinued NMEA-0183 compatible ring of instruments that loop through
each other, each adding its statements to the ring for all to read. You
simply pull out one wire, the data wire from anywhere in the ring and
connect it to one input of the mux and all the data from all the
instruments shows up on the network. That's not possible with B&G's new
H series any more, which is why I just added more "Network" instruments
to the ones that came on the boat as "obsolete" by the previous owner.
You can still get "Network" instruments from lots of sources at very
reasonable prices.

The Brookhouse mux with 5th HS port for the AIS input, but still with RS-
232C port I can leave in place of our old Noland will fill the need very
nicely on Lionheart. 38.8Kbaud will make it through my 25-pair helm-to-
nav data cable just fine. That way, I can leave the AIS receiver behind
the nav station's electronics panel where it shares the mizzen Metz
Manta6 VHF antenna with the M59 emergency VHF transceiver through a
proper coax switch. The main VHF is Icom M602 my Cap'n just HAD to have
to match the M802 HF...total overkill. NOONE needs a $US500 VHF radio on
a SAILBOAT!

Again, thank you for the information....