GPS Antenna - Internal or External - SailNet Community
 
LinkBack Thread Tools
post #1 of 7 Old 02-24-2012 Thread Starter
Member
 
Join Date: Feb 2012
Location: Toronto, ON
Posts: 35
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
GPS Antenna - Internal or External

I've got tired and confused by reviewing and comparing different gps/chartplotters specs and manuals.

Gps/chartplotters with internal antenna sounds like a more practical solutions in terms of one less component and cable installation.

Do you think internal antennas are reliable and powerful enough for coastal cruising.

How much difference external antenna makes?

Thanks in advance for your comments,

Tafa
Tafa is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 7 Old 02-24-2012
Senior Member
 
Stu Jackson's Avatar
 
Join Date: Jul 2001
Posts: 886
Thanks: 0
Thanked 14 Times in 13 Posts
Rep Power: 15
 
Where is your chartplotter?

Internal antennas have been reported to work just fine down below. All my handheld GPS units work fine down below, as does my BU-353 GPS hockey puck ocnnected to my laptop.

Stu Jackson, C34, 1986, M25 engine, Rocna 10 (22#)
Stu Jackson is offline  
Quote Quick Reply Share with Facebook
post #3 of 7 Old 02-24-2012
Reward for lost Kraken!
 
hellosailor's Avatar
 
Join Date: Apr 2006
Posts: 11,481
Thanks: 5
Thanked 132 Times in 129 Posts
Rep Power: 11
   
Tafa, 20 years ago it was a big difference. Todays 4th-generation GPS receivers are so much more sensitive that an indoor antenna should be perfectly adequate unless you're in a metal boat or have an extremely heavily made deck.

Take any modern smartphone or recent gps, turn on the gps monitor screen, look at signal strength. Now take it below and see how far it drops and whether you've still got useable signal.

And remember an external deck-mounted antenna is useless if it winds up in a location where it will be stepped on, sat on, or torn off by sheets.
hellosailor is offline  
Quote Quick Reply Share with Facebook
post #4 of 7 Old 02-24-2012 Thread Starter
Member
 
Join Date: Feb 2012
Location: Toronto, ON
Posts: 35
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Thanks Stu and HelloSailor,

I'm planning to install it on the pinnacle. In this case internal antenna would be fine.

This gonna save me some installation time and some maintenance budget (to spend on something else for the boat of course

Tafa
Tafa is offline  
Quote Quick Reply Share with Facebook
post #5 of 7 Old 02-26-2012
Senior Member
 
Join Date: Oct 2009
Location: Pennsylvania
Posts: 699
Thanks: 10
Thanked 1 Time in 1 Post
Rep Power: 6
 
I have a fixed mount chart plotter with an external antenna mounted on top of the pilot house and often use a handheld model inside the pilot house and down below. Haven't notice any difference between the performance on the roof mounted or the internal antennas.

Last edited by LinekinBayCD; 02-26-2012 at 10:55 AM.
LinekinBayCD is offline  
Quote Quick Reply Share with Facebook
post #6 of 7 Old 02-26-2012
Senior Member
 
Join Date: Sep 2006
Location: Texas
Posts: 526
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
I've used both, the internals work fine, and avoid the complexity of running cables. The only downside is an external antenna can be more accurate, and if well located give a better signal.

Also required to have fixed antenna location when interfacing with AIS.

The Sun has Risen on a New Day filled with the Promise of Adventure.
CapnBilll is offline  
Quote Quick Reply Share with Facebook
post #7 of 7 Old 02-26-2012 Thread Starter
Member
 
Join Date: Feb 2012
Location: Toronto, ON
Posts: 35
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Thanks CpnBilll

That's what I was looking for. So there's no remarkable difference in accuracy between external and internal antennas.

I'm not planning to get an AIS for now but I will consider compatibility for future needs

Cheers,

Tafa
Tafa is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Spinnaker Halyards: Internal vs external mast routing mentalfee Gear & Maintenance 5 06-21-2014 05:47 PM
Internal or external boom lines led aft karluk Gear & Maintenance 5 06-01-2011 05:13 AM
Favorite Installation spot of external GPS Antenna (2 1/2" Round) NewsReader Mass Bay Sailors 0 05-28-2007 02:15 PM
external generator? dch Learning to Sail 4 08-09-2004 12:29 PM
Internal Ballast vs. External Ballast windship General Discussion (sailing related) 3 09-15-2002 04:33 PM

Posting Rules  
You may post new threads
You may 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome