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WTB: Garmin GSD 20 or 21

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Old 08-19-2008, 10:34 PM
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Default WTB: Garmin GSD 20 or 21

In need of a gsd 20 or 21
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Old 08-20-2008, 05:43 AM
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Default RE: WTB: Garmin GSD 20

Edited out.
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Old 08-20-2008, 09:11 AM
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Default Re: WTB: Garmin GSD 20

I'd snap up that GSD 21; that's a good price, and he is correct, you can unplug one and plug in the other.

I had a lightly used GSD 21 I sold on Ebay last march for about $75 more than that.
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Old 08-24-2008, 08:19 AM
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Default Re: WTB: Garmin GSD 20 or 21

are you still looking? I might have a 21 I could sell you.
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Old 08-24-2008, 08:20 PM
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Default Re: WTB: Garmin GSD 20 or 21

Yes I'm still looking
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Old 08-25-2008, 10:52 AM
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Default Re: WTB: Garmin GSD 20 or 21

Guys,
Is there a noticable difference between the 20 & 21?
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Old 08-25-2008, 12:08 PM
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Default Re: WTB: Garmin GSD 20 or 21

I think they are both analog sounder boxes but the gsd21 has the "utlrascroll" (faster refresh rate) feature over the gsd20.

I had the gsd20 on my last boat and thought it was ok. It certainly wasnt a furuno. I am having the newer digital GSD22 put in my new boat.
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Old 08-25-2008, 08:52 PM
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Default Re: WTB: Garmin GSD 20 or 21

Hey, I got a GSD-21 for sale en Ebay. Item# 170254412115

http://cgi.ebay.com/ebaymotors/ws/eB...254412115&rd=1
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Old 08-27-2008, 01:00 PM
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Default Re: WTB: Garmin GSD 20 or 21

Thanks for the info!
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Old 05-10-2009, 08:01 PM
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Anyone still need a gsd 20???
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Old 05-10-2009, 09:00 PM
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Originally Posted by ChuckDSlayer View Post
Anyone still need a gsd 20???
pm sent
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