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05-13-2014, 01:19 PM
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Join Date: Nov 2008
Location: Shreveport, LA
Posts: 1,002
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SL30 and a 2nd Nav radio with one antenna?
I cant seem to understand the SL30 manual, and my searches of the archives here haven't turned up anything, so I was hoping someone here would know the answer. My question is as follows:
I have an SL30 and a second Nav radio, but only one VOR/GS antenna. Can I operate both Nav radios with this one antenna, and if so, how? Do I use a diplexer, a triplexer, a coupler, none of those?
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05-13-2014, 01:29 PM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,420
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Quote:
Originally Posted by blueflyer
. Can I operate both Nav radios with this one antenna
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Well, yes you can...........
Another question is "should I only use a single antenna for two radios"
Check the archives-----search "duplex" or such-----been a lot of talk in the past.
Tip, when you search use the advanced search, and reset the "find posts from" field to "any date"
Or, call Stein........
__________________
Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010
Phase 1 done, 2/4/2011 
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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05-13-2014, 01:30 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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What is your second Nav radio?
SL30's have built in diplexers, many others don't.... it matters!
In any case, sharing one antenna between two units is always a compromise on signal strength. It works but not as good as dedicated antennas. That being said, tons of installs done that way!
Last edited by Brantel : 05-13-2014 at 01:36 PM.
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05-13-2014, 01:36 PM
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Join Date: Nov 2008
Location: Shreveport, LA
Posts: 1,002
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2nd Nav is a Val Nav 2000
Brantel! I was hoping you would respond! My second nav radio is a Val Nav 2000. I don't see any mention of a diplexer in the Val 2000 install guide, hopefully you know the answer.
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05-13-2014, 01:40 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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Quote:
Originally Posted by blueflyer
Brantel! I was hoping you would respond! My second nav radio is a Val Nav 2000. I don't see any mention of a diplexer in the Val 2000 install guide, hopefully you know the answer.
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All you need is a simple high quality splitter...Both of them have built in diplexers. At least at first glance it looks like the Val does since it only has one NAV/LOC/GS antenna connection.
Last edited by Brantel : 05-13-2014 at 01:43 PM.
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05-13-2014, 01:43 PM
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Join Date: Nov 2008
Location: Shreveport, LA
Posts: 1,002
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Thank you Brantel!
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05-13-2014, 01:46 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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Make sure it is rated 50 ohm. Don't get some el cheapo made for cable TV...
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12-29-2015, 10:04 AM
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Join Date: Sep 2010
Location: Chile, Valparaiso
Posts: 294
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Signal Issues
Quote:
Originally Posted by Brantel
All you need is a simple high quality splitter...Both of them have built in diplexers. At least at first glance it looks like the Val does since it only has one NAV/LOC/GS antenna connection.
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Dear Brantel, passed 3 years and having signal interference in my 2 vors that use the same antenna and a commant splitter. The question is if I have to ground the splitter because it is installed in a floating position (between cables conections).
__________________
Hern?n Santib??ez
Valpara?so, Chile
RV-7 TMX-IO-360 G3X and VPX Flying over Chile
2018 Dues Paid
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