Boat Forum / Electronics / March 2007

I have just about finished the updating of my live-aboard boat's
electrical system.
After adding all this stuff a concern has arisen.
With all of todays concern about wasting energy, and the cost thereof,

Does anyone have a commercial solution for getting an alram out of the
raymaine chartplotters that can actually be heard.  I know they sell
the seatlk to nema converter for this purpose, but I am told this will
not sound an alrm for anchor dragging.  I bought the shipmodul

I am contemplating a major update to the navsystem on VALIS, my Pacific
Seacraft 44 sailboat, and would appreciate some advice.
Currently, I have a Raymarine RL70CRC+ chartplotter at the navstation, a
RLC80CRC+ at the helm, and a Raymarine 4kW radome on the mast.  There is a

I read in one of the forums that one has bought 2 boosters,
as if one is for receiving and one for transmitting.
Does that makes any sense?
I was hoping that one is sufficient for both ups and downs

Can someone define what the "trip amps" on a breaker means?  I have a
20A breaker that has a Trip Amps of 27A.  I'm running a breaker right
at 20A and it's tripping after several minutes.   I just increased it
to a 25A breaker, but I'd like to understand what "trip amps" means.

I just purchased a 34 ft boat.
I will be using it around De, Md, Va and NJ both in the bays and the
coast.
It only has a marine radio in it now.

Does anyone got any experience as to which
will be the best wi-fi booster antenna to a lap-top
on board a boat?

Has anyone tried connecting the Airmar PB100 to a Raymarine ST-60?
I'm wondering if the ST-60 will pick up the NMEA 0183 sentences from
the Airmar and function as if it were connected to a standard wind
vane or whether it actually needs the wind vane sensors.

I need an operators manual for this radio.
Programming freq's, all that.
Even a repair manual will be highly appreciated.
Any help appreciated.

I'm trying to connect a NASA GPS cockpit repeater to a MLR FX312 without
success.
The same GPS repeater connects fine with my Garmin 12 handheld.
Any suggestions please? I've tried checking the NMEA output from the MLR -

Shaw Test Message

Does anyone know what became of the plans to develop a system for
pactor 2/3 using a PC soundcard rather than an extremely expensive
TNC?
I only found very old stuff by googling.

I picked up this neat old volt meter that I'd like to use on my boat.
The guy I got it from told me it came out of a 1920s automobile.  I
figured it wouldn't even work, but when I got it home I was surprised to
see that it did work, and I was also surprised how easily the chrome

All this talk about circuit breakers has reminded me of something I
have been meaning to do.
I have a 1.5 horsepower 12 volt electric motor that powers my anchor
winch by a worm wheel.

I'm considering the Lilliput for use onboard.
They are selling these on Ebay:
http://cgi.ebay.com/Lilliput-Car-PC-BlaXtream-TC1000-DVD-MP3-GPS-USB-NoRes_W0QQi
temZ200086699156QQcategoryZ18798QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
It's designed as a mobile pc with a 40 gig HD and 1 ghz ...