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08-27-2012, 02:58 PM
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Join Date: Jan 2005
Location: Boise, ID
Posts: 1,007
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GDL 39 to External ADS-B Antenna
Hi, Gang,
I will be using an external blade antenna for my GDL 39. Anyone have a solution or source for a cable with a BNC on the antenna end and a male SMA on the other end for the GDL 39?
John Siebold
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08-27-2012, 03:10 PM
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Join Date: Feb 2005
Location: Minneapolis
Posts: 2,473
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Quote:
Originally Posted by RV7ator
Hi, Gang,
I will be using an external blade antenna for my GDL 39. Anyone have a solution or source for a cable with a BNC on the antenna end and a male SMA on the other end for the GDL 39?
John Siebold
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No...but we sell a really nice little SMA/BNC adapter that we usually send with the GDL's that we sell....or, you can buy a crimp on SMA connector that works just like the BNC's do.
Cheers,
Stein
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08-27-2012, 03:12 PM
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Join Date: May 2012
Location: Houston tx
Posts: 124
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crimp this onto one end of your RG-400 and on the other end, a BNC or TNC connector for the Comant CI-105 antenna. Try to use crimp connectors as the adapters have Db loss.
http://www.solidsignal.com/pview.asp...u=813986007556
I just got a GDL-39 and from 2500 feet I can receive the ADS-B ground stations from over 100 miles away. I was planning to use an external antenna but I cant see the need.
__________________
Byron
1977 Mooney 201
Houston, TX
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08-28-2012, 12:14 PM
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Join Date: Jul 2007
Location: Petaluma, CA
Posts: 261
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Ebay has what you need
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Chuck Newman
Petaluma, CA
RV-8 N828RV
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08-28-2012, 02:33 PM
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Join Date: Aug 2007
Location: Two Rivers, WI
Posts: 278
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were
[quote=jetdriven;693729
I just got a GDL-39 and from 2500 feet I can receive the ADS-B ground stations from over 100 miles away. I was planning to use an external antenna but I cant see the need.[/QUOTE]
Were did you put yours?
__________________
David Herrmann
RV-7 N174DH built and sold
RV-8A N369DP purchased and flying/ Sold
RV-8 N3170L purchased and flying/ Sold
RV-3B N313RV purchased and flying Sold
RV-4 N488TW Flying  Sold
1946 J3Cub all stock and original flying Sold
1943 Meyers OTW-160  sold
1997 RV-4.5 N221TM wow, sold
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08-28-2012, 02:39 PM
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Join Date: May 2012
Location: Houston tx
Posts: 124
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David, we have the aera cable and it currently sits on the glareshield of a Mooney. That thing receives weather at 500 AGL everywhere in TX we have flown and it locked on to IAH and HOU stations on top of a 50' bridge in my car.
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Byron
1977 Mooney 201
Houston, TX
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08-28-2012, 05:30 PM
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Join Date: Jan 2006
Location: Green Bay, WI (GRB)
Posts: 479
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Many may not need the external UAT antenna for reception, but those who do will find the Delta Pop UAT antenna is well within the Garmin spec's of "50 ohm vertically polarized antenna with a VSWR less than 1.7:1 at 978 MHZ and less than 1.5:1 at 1090 MHZ".

__________________
Don Pansier
Green Bay, WI (GRB)
RV-7 N450DP
W9LYX
Antennas for Experimental Aircraft
www.deltapopaviation.com
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08-28-2012, 05:40 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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I would like to put out a shameless plug for Don and his antennas.
On top of being a super nice person, Don knows his stuff and as you can see, he has the equipment needed to design his antennas.
See Don for your antenna needs is the recommendation!
Been using two of his Com antennas for a couple years now and they work great on the belly of the RV. He designs them with some unique features that provide top performance for a reasonable cost.
Some antenna designs have issues with static buildup but Don has addressed this with his units.
Several of the certified antennas claim super wide frequency response with low VSWR across the entire range. The way they do this is by embedding passive components into the antenna base to fake the impedance match. The power is not radiated but instead is wasted as heat. Don has addressed this with his designs.
Last edited by Brantel : 08-28-2012 at 05:44 PM.
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08-28-2012, 05:59 PM
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Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,686
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I'd also like to add that Don donated the comm antenna for the RV1, and even in it's less than ideal location inside the fuselage, it worked much better than expected!
__________________
Walt Aronow, DFW, TX (52F)
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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03-26-2013, 07:06 PM
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Join Date: Jun 2005
Posts: 678
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Would this adapter work?
__________________
Steve
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