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Old 10-05-2019, 09:46 PM   #1
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Newby questions

Looking for some help identifying some components of my boat. Here's pictures of some of the items... I have an older Garmin GPS 120 that doesn't seen to work and I'm assuming one of these antennas is for it.
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Old 10-05-2019, 09:57 PM   #2
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I had a gps 120, and my antenna looked like the second image (img_2499)
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Old 10-05-2019, 10:08 PM   #3
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Wow, I can't imagine what that "double bubble" antenna is. The wire does not appear to be hidden at all so it should be easy to track, let us know what you find.

I'v never seen a Sirrius antenna shaped like yours but I suppose it could have an option I do not have like weather or phone or something.

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Old 10-05-2019, 11:02 PM   #4
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Could that be a radar reflector?
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Old 10-05-2019, 11:26 PM   #5
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Could that be a radar reflector?
That would be my guess.
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Old 10-06-2019, 07:12 AM   #6
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Images 2499 & 2500 are definitely of the antenna for the Garmin 120. The other things almost certainly have to be a radar reflector as others have surmised. They probably do a good job of painting a target on a radar too. Leave them on there!
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Old 10-06-2019, 08:39 AM   #7
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Originally Posted by Pete Meisinger View Post
Wow, I can't imagine what that "double bubble" antenna is. The wire does not appear to be hidden at all so it should be easy to track, let us know what you find.

I'v never seen a Sirrius antenna shaped like yours but I suppose it could have an option I do not have like weather or phone or something.

pete
We have the same Sirius weather antenna on our NT installed by one of the previous owners. With all the weather apps available now we don't feel it is necessary to have any more.
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Old 10-06-2019, 09:01 AM   #8
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Yes the 2nd and 3rd pics are for the 120. Ancient fossils of the gps world.
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Old 10-06-2019, 09:29 AM   #9
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The double bubble could, in fact be a radar reflector but what's with that huge cable that appears to run to it. Arn't radar reflectors passive? Also why are the two pictures of it different, did you remove the red light for the second picture or do you have two of these contraptions on board ? And that stainless steel post looks like it could hold a heavy weight, if it's a deflector it shouldn't weigh anything.

I can't remember what "Loran" antennas looked like, does anybody ? Is there Loran on board?

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Old 10-06-2019, 09:29 AM   #10
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Radar reflectors should be flat, not parabolic?

This could drive one...NUTS.
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Old 10-06-2019, 10:42 AM   #11
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Yes the 2nd and 3rd pics are for the 120. Ancient fossils of the gps world.
If your 120 is not working, the antenna may have been removed.
My 128 (similar) has an external antenna that is about the size of a hockey puck, says "Garmin" on it.
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Old 10-06-2019, 11:42 AM   #12
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Radar reflectors should be flat, not parabolic?

This could drive one...NUTS.
My radar reflector isnít flat. It is a Lundberg lens type of reflector. I donít have a great photo of it but if you look closely in the photo on the port side hanging below my radar arch you can see it. It has 3 lobes.
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Old 10-06-2019, 12:51 PM   #13
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Greetings,
Mr. C. "Lundberg"? Is that the guy who soloed across the Atlantic or the cheese?


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Old 10-06-2019, 01:13 PM   #14
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Could that be a radar reflector?
Image 2498 looks like the VISIBALL radar reflector that was made by Plastimo from France.

Here is a link to a PDF of a 2005 review of radar reflectors with more info on it. It doesn't look like they are made any more.
https://keyassets.timeincuk.net/insp...ce_ym_june.pdf

Doesn't have the best review, but its already there and will add to your signature, so I'd leave it unless it causes other problems. One potential problem is the VISIBALL appears to be a plastic insert holding that central stud to which your nav light is mounted. Long long exposures to UV may/will/have made that plastic brittle and cause issues with that mounting if it cracks and breaks at some point.
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