GPS 430 or 480?

"John R. Copeland" wrote in news:_aYfd.57417
:

Subject: GPS 430 or 480?


John-
I've had a CNX-80 since July, and just got it back with the V 2.0
software, which turns it into a GNS-480 with VNAV. There is no comparison
with the other Garmins:
1. Yes, VNAV is huge... I can do LNAV/VNAV approaches to tons of places,
and LPV down to near ILS minimums to a few, with more added every month.
2. GNS-480 updates 5X/second vs once/sec for other GPS's. Once a second
doesn't hack it on VNAV approaches -- an aircraft can move 20' vertically
in a second before you get any indication... at 5fps you move only 4'.
Also, 5X/sec is fast enough that you can keep the plane upright if you lose
all your gyros - 1/sec is NOT.
3. Airways... they are NOT gone in the NE. From New Haven, Teteboro,
KSLK, etc., many times ATC has thrown FRC's with airways at me shortly
after take-off. With the GNS-480, it is a snap to handle this:
- Direct To the first waypoint
- All the airways from that waypoint are LISTED by the GNS-480 - you
just push a soft-key for the one you want.
- Then you choose from a list of waypoints ON THAT AIRWAY where you
want to get off. It is EASY!
Yes, you must invest some time learning the 480, but that's true with any
GPS. I found it mostly intuitive, with only a few things that made me
think twice - like why it SUSPENDS at the MAP. I guess that puzzeled
Garmin too, because in V 2.0 it no longer does that.

One more really neat featu it sizes holding patterns based on your
ground speed so you'll do 1 minute legs if you just follow the line!
--Sandy, Worthington OH

C Kingsbury wrote:
If you mainly want a DME/ADF replacement and to use for occasional RNAV
approaches, do you really need either the 430 or the 480? You can buy a used
IFR GPS for less than half of what either of those boxes cost new and get
all of that stuff and save some money to solve other problems. Neither box
will do you any good if the plane is on the ground because you don't have
the money to repair a cylinder.


Don't be swayed by unit acquisition cost alone.
The installation and certification will be a large chunk of the initial
expense, whether an older or new model. They will also both cost about
the same in database updates. So the total cost of ownership of an
older GPS is really not that much less, for MUCH less capability.
That's the reason they're so cheap ;-)

So the total cost of ownership of an
older GPS is really not that much less, for MUCH less capability.
That's the reason they're so cheap

I have not found a cheap 430. Found a used one for about 6k.
My avionics shop quoted a price of 10k to instal a 430 abd renove my ADF.
To me that is a lot of coins.
Hank

On 28 Oct 2004 17:15:28 GMT, Hankal wrote:
So the total cost of ownership of an
older GPS is really not that much less, for MUCH less capability.
That's the reason they're so cheap

I have not found a cheap 430. Found a used one for about 6k.
My avionics shop quoted a price of 10k to instal a 430 abd renove my ADF.
To me that is a lot of coins.
Hank


I meant an older model GPS, such as a KLN-89, which can be
picked up for about $1200, but would still cost about the
same to install.

People around me (BED- Boston area) have been spending in the 6k range to
acquire a middle-aged GPS and install/certify it in 172s of similar vintage.
That is a big difference from $6k to buy a unit and $10k to install it. A
used/older GPS buys you a ton of new capabilities in a plane without RNAV or
DME. No question a 430/480 is great stuff but by itself it doesn't buy you
that much more at least right now.

-cwk.

"Ross Oliver" wrote in message
...
On 28 Oct 2004 17:15:28 GMT, Hankal wrote:
So the total cost of ownership of an
older GPS is really not that much less, for MUCH less capability.
That's the reason they're so cheap

I have not found a cheap 430. Found a used one for about 6k.
My avionics shop quoted a price of 10k to instal a 430 abd renove my ADF.
To me that is a lot of coins.
Hank


I meant an older model GPS, such as a KLN-89, which can be
picked up for about $1200, but would still cost about the
same to install.