GNC-300XL IFR GPS/COM

Well in my particular case, the radio I'm replacing is a narco with a narco
glideslope head that won't work with my other nav/comm (a KX-175B). So I'd
have to buy two heads if I wanted to fly a precision approach: one for the
new GPS, and one with a glideslope needle (I DO have a KI201C currently on
my KX-175B but, even if that would work for the GPS, I'd still need to buy
the annunciator, etc). I opted to buy just one head with a glideslope
needle and share it between the GPS and my nav/comm. En route, I certainly
wouldn't be using both at the same time, and I couldn't think of any
approach situations where I'd need a CDI for both. If you're not in this
particular situation then yes, it makes better sense to buy the MD-41
combination.

mark

"Stu Gotts" wrote in message
...
So maybe I'm missing something and hope someone can explain it to me.
If you need an indicator for an IFR box, why not a dedicated
indicator? One with the warn lights, etc., that would not be shared?
Wouldn't that eliminate the need for a switching device? Which ones
would qualify? KI209A, etc.?

On Wed, 15 Oct 2003 05:39:24 GMT, "Flynn"
wrote:

I installed this unit as the number two in my previous plane (number one
was
a kx-155 w/GS). I thought it was a great budget unit. $2400 on ebay
from
JA Air. All in including certification I was out $6800. Having now
flown
behind a pair of 430's for 25 hours, I still think that the set up above
was
perfect for a 79 Grumman.

"Jeff P" wrote in message
. com...
Anyone have any experience with the GNC-300XL IFR GPS/COM?

Does it work well? Do you like the user interface? How is the
screen?

I want to have GPS IFR capability in my 172. What else will I have to
install to get IFR cert for this unit?

Thanks,

Jeff

Well in my particular case, the radio I'm replacing is a narco with a narco
glideslope head that won't work with my other nav/comm (a KX-175B). So I'd
have to buy two heads if I wanted to fly a precision approach: one for the
new GPS, and one with a glideslope needle (I DO have a KI201C currently on
my KX-175B but, even if that would work for the GPS, I'd still need to buy
the annunciator, etc). I opted to buy just one head with a glideslope
needle and share it between the GPS and my nav/comm. En route, I certainly
wouldn't be using both at the same time, and I couldn't think of any
approach situations where I'd need a CDI for both. If you're not in this
particular situation then yes, it makes better sense to buy the MD-41
combination.

mark


Mark:

With your setup, if you want to use MD-41, you still need a KN-72 converter to
convert KX-175B's composit NAV to right-left for MD-41, and you would not have
GS nuless you also get a KN-75 GS receiver.

If you want to share a CDI for both KX-175 & GPS, KI-209A is your best choice
because KI-209A has built-in converter & relay switching for GPS/NAV signals.
You still need a GS receiver like KN-75 to get ILS, and annunciators/switches
to control GNC300's arm, hold functions as well as switching KI-209A between
GPS/NAV signal by grounding a wire from KI-209A.

All these extra hardwares and installation make GNS430 a batter and not much
more $ choice. Been there & done that with KX-125, KN-75, Trimble 2000,
KI-209A, and MD-41 (I get GPS on both KI-209A & MD-41). I did my own
installation so I saved by using used first gen GPS, but if I need to pay
someone to install for me, GNS430 with single CDI will be my choice.

Robin Hou

Robin:

I basically did what you suggested except I chose a garmin head rather than
the king head. So the extra parts I'm getting are the garmin head, the
KN-75 for glideslope, and an AmeriKing annunciator/switch. And you're
right, that does add to the cost, but everything included I'm still about
$2K shy of a new 430 install. I can't remember if I already mentioned this,
but I looked into the used 430s and couldn't find a 14v unit. I was advised
against using a 28v unit with a converter because apparently the converter
fails often.

If anyone has any experience, good or otherwise, with one of the 28v 430s
with a converter, I'd like to hear about it.

mark

"ROBIN FLY" wrote in message
...
snip
Mark:

With your setup, if you want to use MD-41, you still need a KN-72
converter to
convert KX-175B's composit NAV to right-left for MD-41, and you would not
have
GS nuless you also get a KN-75 GS receiver.

If you want to share a CDI for both KX-175 & GPS, KI-209A is your best
choice
because KI-209A has built-in converter & relay switching for GPS/NAV
signals.
You still need a GS receiver like KN-75 to get ILS, and
annunciators/switches
to control GNC300's arm, hold functions as well as switching KI-209A
between
GPS/NAV signal by grounding a wire from KI-209A.

All these extra hardwares and installation make GNS430 a batter and not
much
more $ choice. Been there & done that with KX-125, KN-75, Trimble 2000,
KI-209A, and MD-41 (I get GPS on both KI-209A & MD-41). I did my own
installation so I saved by using used first gen GPS, but if I need to pay
someone to install for me, GNS430 with single CDI will be my choice.

Robin Hou

If you do not already have an RNAV unit, you could use Narco 122D/GPS
that can share its indicator with the 300XL. I had to go that route
to save panel real estate.

The 300XL requires a CDI with a resolver (not a converter).
The Collins 350 CDI has a resolver and will fit the
300XL.

----------------------------------------------------
Paul Lee, SQ2000 canard project: www.abri.com/sq2000


"Mark Astley" wrote in message ...
Well in my particular case, the radio I'm replacing is a narco with a narco
glideslope head that won't work with my other nav/comm (a KX-175B). So I'd
have to buy two heads if I wanted to fly a precision approach......