Cruisers Forum

Thread Tools Search this Thread Rate Thread Display Modes
Old 05-01-2009, 06:18   #1
Registered User
Scratch's Avatar

Join Date: Jan 2009
Location: Nova Scotia
Boat: Downeaster 32 - "Orion"
Posts: 7
Images: 1
Standard Horizon Plotter

I was wondering if anyone has ever set up a CP180i inside a cabin. I realize that SH makes an external antenna version but I have the 180i already and if it will not be affected by a little fiberglass and plywood I would just assume use the one I have. Thanks
Scratch is offline   Reply With Quote
Old 05-01-2009, 07:03   #2
Registered User
slacker's Avatar

Join Date: Nov 2006
Location: San Diego and Sea of Cortez
Boat: KP 44
Posts: 195

I cant speak for the SH but our Garmin GPS 12 works fine down below shooting through the deck. This particular model is about 8 years old so newer units should be better. We are thinking of upgrading to one of the new SH plotters and would love to know how well it works down below.

slacker is offline   Reply With Quote
Old 05-01-2009, 07:14   #3
Registered User
jemsea's Avatar

Join Date: Feb 2005
Location: Cruising The US East Coast
Boat: Sceptre 41
Posts: 160
Images: 4
I have the SH 300i and have set it up so it mounts in the cockpit and in the cabin. It acquires a GPS fix quickly in both locations.

I use the inside mount for planning in the evenings. The 300i comes with two cables but just one is needed for operation so why not have dual mounts?
John & Cheryl Mallon
Sceptre 41
jemsea is offline   Reply With Quote
Old 05-01-2009, 13:45   #4
Obsfucator, Second Class
dacust's Avatar

Join Date: Feb 2008
Location: Southeast USA.
Boat: 1982 Sea Ray SRV360
Posts: 1,745
I'd go with an external antenna.

I would always go with an external antenna.

First, the good news:

A GPS signal will travel through fiberglass and canvas just fine. A plywood or cored deck may also let it through, but may not, depending on the thickness and/or composition.

Also, the signals are stronger than they were a few years ago. The signal may bounce around, coming in through windows, etc. A few years ago my Garmin GPS III+ would not pick up a signal inside at all. But now it gets a lock just fine in the middle of my home office. Don't know if it's coming through the roof or the windows, or maybe both.

Now the caveat:

When mounting below decks, where you will notice the difference is when the weather is bad or sunspots are active or ... In those conditions, the signal gets marginal. The addition of decks may well make the difference in receiving or not.

I would mount an external antenna if you really want to maximize your reception in marginal conditions.

dacust is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Standard Horizon Knotmeter Rodz Marine Electronics 6 30-11-2009 19:57
Standard Horizon JonasB Navigation 6 05-12-2008 11:40
Standard Horizon - CP 500 Parlay III Navigation 3 04-08-2008 07:20
Installation Location of Standard Horizon GPS Ed Steele Marine Electronics 12 16-07-2007 07:31
Standard Horizon equipment seafarer23 Marine Electronics 9 25-07-2006 17:53

Advertise Here

All times are GMT -7. The time now is 18:01.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.