In a message dated 7/5/2008 5:20:03 P.M. Central Daylight Time,=20 mmcmanus@grandecom.net writes:

<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>I'm=20 certainly not avionics expert, but unless something has recently changed=20 at
Garmin, your radio shop is, ugh, pulling your leg. My 430W doe= s=20 not have an
external antennae, and it was installed by a well known sho= p in=20 north Texas.
Also, I remember reading the requirements from Garmin, ie,= a=20 specific antennae
coax, certain location on the panel, etc, but nothing= =20 about external antennaes.

That being said, I expect that you will g= et=20 better reception with external
antennaes.

On the subject of GNS4= 30s,=20 there is a new software release. The shop doing my
x-ponder cert instal= led=20 version 3.1. No charge to me, Garmin pays the shop 1
hour labor f= or=20 every upgrade they do.
Matt McManus
LNC2 360

Quoting Berni=20 <bbreen@cableone.net>:

> I just had an existing 430 conver= ted=20 to WAAS and added another new 430W to
> my stack. According to= the=20 radio shop the antennas MUST be installed
> externally and in a cert= ain=20 configuration (not next to one another).
> According to the shop Gar= min=20 mandates that their authorized shops install
> them this way or not=20= at=20 all.
>
>
>
> =20 Berni
>
>
>
>   _____
>
> Fr= om:=20 Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Colyn
= >=20 Case at earthlink
> Sent: Wednesday, July 02, 2008 11:42 AM
>=20= To:=20 lml@lancaironline.net
> Subject: [LML] WAAS=20 antennas
>
>
>
> Has anyone else noticed any issue= s=20 with their WAAS GPS installation?
>
>
>
> I just=20 convereted a 530 and 430 to 530W and 430W. My GPS antennas ar= e=20 on
> a tray just under the glass section in front of the vertical st= ab=20 on my IVP.
> Since I got Waas I get "No GPS navigation - user other=20= nav"=20 message. It
> happens on the ground, it happens whether near=20 buildings or not, it happens
> to both navs but at different=20 times.   It lasts from 30-45 seconds
>=20 typically.
>
>
>
> One theory that has been put fo= rth=20 is that the WAAS units look further down
> the horizon (or need to t= o=20 get a big enough constellation) and that I may
> have some blockage=20= at=20 those low angles.   So far I haven't seen this happen
> in= the=20 air.
>
>
>
> I also converted my cessna 530 to=20 530W. I haven't noticed any issues.
> The antenna is=20 OUTDOORS in that installation.
>
>
>
>=20 Colyn
>
>
>
>

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