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Tim Olson
Joined: 25 Jan 2007 Posts: 2879
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Posted: Tue Sep 11, 2007 5:10 am Post subject: WSI AV-300 delivered |
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Yesterday I picked up my AV-300 WSI receiver from SteinAir, my dealer. I
haven't powered it yet, but hope to within the next day or two. It's a
nice looking box, complete with the ability to separately talk to 2 full
EFIS's and one "Listen Only" box, and also via ethernet it can talk to
tablet PC's and other PC based systems without using serial. It looks
like perhaps all receivers are actually audio-integrated, but you need a
bit of external hardware for the sirius radio options.
Right now I'm just trying to get clarification on the antenna mounting
because with the previous system, it was stated at least by Comant that
a ground plane wasn't needed, but the install manual for the AV-300
antenna seems to indicate that best performance is with a 12" or larger
ground plane. I've not had to install a ground plane on fiberglass
canopies before, and so I'll either be adding one to my canopy top and
see if the ground plane still works when it's 1" below the antenna base,
or I'll be getting some additional cable and mounting my antenna back on
the forward tailcone top. I've asked WSI for comments and will pass them on.
Just thought y'all would like to know they've actually delivered one.
--
Tim Olson - RV-10 N104CD - Flying
do not archive
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Tim Olson
Joined: 25 Jan 2007 Posts: 2879
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Posted: Tue Sep 11, 2007 6:17 am Post subject: WSI AV-300 delivered |
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Some of this is edited for brevity, but it's what I asked WSI....
------------------
Regarding the antenna mounting... On the GPS antennas and
the old WSI antennas, everyone always said that you don't really need a
ground PLANE, but you needed to provide a good ground to the case of the
antenna for return power. The new manual says that a ground plane of
12" in diameter is best for reception.
Do you know if this for sure is something required? My current
installation is on the top of the fiberglass canopy, and I have power
ground to the screws, but I don't have any ground plane.
Since I'll be completely mounting the antenna all new this time, I have
choices to make. First and easiest to route wires is to mount the
antenna on the cabin top, the same way I currently have, and it will be
horizontal with a full view of the sky in all directions. The
alternative is to mount the receiver and the antenna on the top of the
tail behind the baggage area, very similar to your Cessna 182 install
example, which would be mounted on a backslope of the roof, so it
wouldn't have as nice of a forward view....and it would be mounted
within 8" of a GPS antenna. If you can find out what's *really*
important to getting the best signal, I'd appreciate it. If it's the
ground plane, then perhaps the best is on the tail if the other GPS
antenna won't interfere. If it's the view of the sky, then on the cabin
top would be OK, but the cabin top is 1" thick and the ground plane if
any would have to be something like self-stick aluminum on the interior
of the cabin.
-------------------
Their Replies:
There is a section in the antenna install manual regarding installation
on composite aircraft. Basically, it says to use an metallic doubler per
FAA AC 43.13.2A, Chapter 3, Section 38b(2).
As for mounting location, top of the wing is preferred to back of the
canopy so as to get the more horizontal mounting.
--
and
--
A ground plane for this antenna isn't really required - the doubler is
more for structural purposes. The FAA AC really does address this well
and should be the reference here. Agree on placement.
-----------------------------------------------------
I think they mistook "top of the wing" being the canopy top of a Cessna
High Wing, but that's OK, the point is, you want a nice high mounting
spot that's as horizontal as possible as the preferred location.
This concurs with what the manufacturers say about certified WAAS
GPS installs also.
Tim Olson - RV-10 N104CD - Flying
Tim Olson wrote:
Quote: |
Yesterday I picked up my AV-300 WSI receiver from SteinAir, my dealer. I
haven't powered it yet, but hope to within the next day or two. It's a
nice looking box, complete with the ability to separately talk to 2 full
EFIS's and one "Listen Only" box, and also via ethernet it can talk to
tablet PC's and other PC based systems without using serial. It looks
like perhaps all receivers are actually audio-integrated, but you need a
bit of external hardware for the sirius radio options.
Right now I'm just trying to get clarification on the antenna mounting
because with the previous system, it was stated at least by Comant that
a ground plane wasn't needed, but the install manual for the AV-300
antenna seems to indicate that best performance is with a 12" or larger
ground plane. I've not had to install a ground plane on fiberglass
canopies before, and so I'll either be adding one to my canopy top and
see if the ground plane still works when it's 1" below the antenna base,
or I'll be getting some additional cable and mounting my antenna back on
the forward tailcone top. I've asked WSI for comments and will pass them
on.
Just thought y'all would like to know they've actually delivered one.
|
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Tim Olson
Joined: 25 Jan 2007 Posts: 2879
|
Posted: Tue Sep 11, 2007 5:20 pm Post subject: WSI AV-300 delivered |
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Justine from WSI today again requested I tell people who have an
old WSI receiver that is not yet activated so they are in the upgrade
program to contact her right away. They want to get everyone
upgraded before the upcoming deadline, and she wants to get an idea
of how many people that is. Here's her info if you're one of them:
Justine Felahi
WSI InFlight Channel Development Manager
WSI Corporation
400 Minuteman Road
Andover, MA 01810
jfelahi(at)wsi.com
Voice: 978-983-6633
Cell: 603-801-9064
Fax: 866-806-6245
Tim Olson - RV-10 N104CD - Flying
do not archive
Tim Olson wrote:
Quote: |
Some of this is edited for brevity, but it's what I asked WSI....
------------------
Regarding the antenna mounting... On the GPS antennas and
the old WSI antennas, everyone always said that you don't really need a
ground PLANE, but you needed to provide a good ground to the case of the
antenna for return power. The new manual says that a ground plane of
12" in diameter is best for reception.
Do you know if this for sure is something required? My current
installation is on the top of the fiberglass canopy, and I have power
ground to the screws, but I don't have any ground plane.
Since I'll be completely mounting the antenna all new this time, I have
choices to make. First and easiest to route wires is to mount the
antenna on the cabin top, the same way I currently have, and it will be
horizontal with a full view of the sky in all directions. The
alternative is to mount the receiver and the antenna on the top of the
tail behind the baggage area, very similar to your Cessna 182 install
example, which would be mounted on a backslope of the roof, so it
wouldn't have as nice of a forward view....and it would be mounted
within 8" of a GPS antenna. If you can find out what's *really*
important to getting the best signal, I'd appreciate it. If it's the
ground plane, then perhaps the best is on the tail if the other GPS
antenna won't interfere. If it's the view of the sky, then on the cabin
top would be OK, but the cabin top is 1" thick and the ground plane if
any would have to be something like self-stick aluminum on the interior
of the cabin.
-------------------
Their Replies:
There is a section in the antenna install manual regarding installation
on composite aircraft. Basically, it says to use an metallic doubler per
FAA AC 43.13.2A, Chapter 3, Section 38b(2).
As for mounting location, top of the wing is preferred to back of the
canopy so as to get the more horizontal mounting.
|
| - The Matronics RV10-List Email Forum - | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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Tim Olson
Joined: 25 Jan 2007 Posts: 2879
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Posted: Fri Sep 14, 2007 8:34 pm Post subject: WSI AV-300 delivered |
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Today I got my WSI AV-300 activated and loading weather on
my Chelton screens. I did this write-up about the experience
in hopes that it can help answer questions for anyone else going through
the upgrade. Everything seems to be in order, so tomorrow will be
a small 200nm x/c flight to test it all out.
Here's the write-up:
http://www.myrv10.com/N104CD/upgrades/20070912/index.html
Tim Olson - RV-10 N104CD - Flying
do not archive
| - The Matronics RV10-List Email Forum - | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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speckter(at)comcast.net Guest
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Posted: Sat Sep 15, 2007 4:32 pm Post subject: WSI AV-300 delivered |
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Thanks Tim for the write up. I have not yet gotten my receiver from Stein.
When I do I will follow your write up before I call for help.
Gary
40274
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