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 GPS Antenna		  New Topic  Topic Locked
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michaelj
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132 Posts
Initially Posted - 05/13/2009 :  14:11:19  Show Profile
I recently bought a Humminbird 755c GPS which has an external antenna that's about the size of a hockey puck. I was going to mount it on the deck just in front of the mast. Anyone have any thoughts on this?

Thanks.
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Sloop Smitten
Master Marine Consultant

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1181 Posts
Response Posted - 05/13/2009 :  14:15:57  Show Profile
If you mount it to close to the mast it will interfere with all of the satellites between it and the mast. Your sails may also provide obstruction. The less obscured the position you put it the better. I mounted mine on the gunwale just forward of the stern light.
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islander
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4018 Posts
Response Posted - 05/13/2009 :  14:21:37  Show Profile
My initial thought is that it's going to get kicked in that spot, How about on the stern rail? The wire can be concealed inside the railing and led inside the boat through one of the rail bases.
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delliottg
Former Mainsheet C250 Tech Editor

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4479 Posts
Response Posted - 05/13/2009 :  14:40:34  Show Profile  Visit delliottg's Homepage
I wouldn't mount it near the mast, you don't want the reflections from the aluminum, or the interference of the mast "shading" the antenna. Pretty much nothing else on our boats will interfere with the signal, even from inside the boat. I always bring my GPS inside with me when we're anchored so I can keep a watch on our position.

Mounting it up on a rail is a good idea or on a stanchion.
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GaryB
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Response Posted - 05/13/2009 :  17:34:27  Show Profile
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Sloop Smitten</i>
<br />If you mount it to close to the mast it will interfere with all of the satellites between it and the mast. <hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">

Must be some really small satellites!
Edited by - GaryB on 05/13/2009 17:34:50
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delliottg
Former Mainsheet C250 Tech Editor

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Response Posted - 05/13/2009 :  17:59:25  Show Profile  Visit delliottg's Homepage
I'm pretty sure he meant the same thing I did with the antenna being in the mast's shadow. The closer you are to the mast, the larger the shadow that masks out the signal from the satellites.
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GaryB
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Response Posted - 05/13/2009 :  18:07:45  Show Profile
I know, I was just trying being a smart ^%$. No disrespect meant.
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jerlim
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Response Posted - 05/13/2009 :  18:30:19  Show Profile
Mount it on the stern rail...it's a line-of-site device to the birds...
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delliottg
Former Mainsheet C250 Tech Editor

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4479 Posts
Response Posted - 05/13/2009 :  18:53:02  Show Profile  Visit delliottg's Homepage
Gary,
Hopefully I didn't sound grumpy, that wasn't my intent, just hoping to clarify the point.
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GaryB
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4303 Posts
Response Posted - 05/13/2009 :  20:32:36  Show Profile
No problem David. My attempts at humor don't always come across in the right way so I wanted to be sure I didn't offend anyone.
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michaelj
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132 Posts
Response Posted - 05/15/2009 :  05:02:42  Show Profile
For some (stupid) reason I had not thought about the stern, ut that is definitely the place. And sorry, guys, I didn't mean to stir up all these feelings!
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Sloop Smitten
Master Marine Consultant

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1181 Posts
Response Posted - 05/15/2009 :  09:12:46  Show Profile
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Sloop Smitten

If you mount it to close to the mast it will interfere with all of the satellites between it and the mast.
--------------------------------------------------------------------------------



Must be some really small satellites!<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">

Just because you can't see them doesn't mean there not there. Hey, I tripped over one last week!
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.