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Wisconsin ADS-B Rollout

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Tim Olson

Joined: 25 Jan 2007
Posts: 2879

Posted: Sat Sep 25, 2010 8:39 pm Post subject: Wisconsin ADS-B Rollout

I had an interesting day flying today!

I took a flight 92nm to drop off the kids, and while I was doing it,

I was beta testing a cool new feature that NavWorx added just

in the last couple days.  More on that when I can.



But anyway, my wife flew on the return leg, so I fired up the laptop and 

did some data logging of the stations I was receiving, up here in

central/western Wisconsin, now that ADS-B covers us.  Turns out the 

coverage is quite nice!!  I was picking up traffic in the "middle of 

nowhere", and when I logged the ground stations, NavWorx has some cool 

debug logging that gives you the Lat/Long position of the GBT, so that 

you know how far you're receiving it from.   You will be able to see 

from these log lines that the stations weren't too close, yet I was 

attached throughout the flight to 5 different GBT's on just that one 

92nm flight!  Note that these 5 log lines were just clipped from random 

places, just to identify the individual unique stations.  In reality, 

these 5 stations aren't the listed distance from ONE position, but from 

various positions on my trip.  Anyway, I was surprised to see I could 

receive that many GBT's in our area, since it was just rolled out!



     LAT:45.822300 LNG:-89.334595 TID:1 GD:75.166351 MD:75.166351 PV:0 

ADV:1 UTC:1 SLOTID:23

     LAT:43.422195 LNG:-88.892517 TID:1 GD:102.900658 MD:102.900658 PV:0 

ADV:1 UTC:1 SLOTID:1

     LAT:46.100693 LNG:-88.540314 TID:1 GD:112.543198 MD:112.543198 PV:0 

ADV:1 UTC:1 SLOTID:26

     LAT:44.914707 LNG:-92.946503 TID:1 GD:89.365959 MD:90.793045 PV:0 

ADV:1 UTC:1 SLOTID:26

     LAT:44.847992 LNG:-93.579285 TID:1 GD:96.877029 MD:98.547401 PV:0 

ADV:1 UTC:1 SLOTID:9

So from the looks of it, when they say the coverage will be better

than radar coverage service areas, I think that's going to prove

to be true. I know I now get ADS-B right above my own airport,

at pretty low altitudes, so we're finally entering into the days

where the rollout is far enough along that traffic display will

be MUCH improved over what I had with my GTX330.  In fact, this

week I decided now to disable the "Composite TIS" function that

they had, because I now probably won't need Mode S traffic passed

through to the EFIS anymore, as it would just be duplicate targets

from all the ADS-B targets there are.



Cool stuff.  Definitely is a very welcome addition to the capabilities

that we all can have.



-- 

Tim Olson - RV-10 N104CD

do not archive

Kelly McMullen

Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ

Posted: Sun Sep 26, 2010 5:12 am Post subject: Wisconsin ADS-B Rollout

Sounds great Tim. Is there some web site where we can see when our own local areas will have ADS-B ground stations? I've not had much success searching for that information. Has NavWorx given any indication if they will seek TSO certification of their ADS600 transceiver? I already see needing an extra external GPS antenna for whatever ADS-B unit gets installed.

 

On Sat, Sep 25, 2010 at 9:27 PM, Tim Olson <Tim(at)myrv10.com (Tim(at)myrv10.com)> wrote:

[quote] --> RV10-List message posted by: Tim Olson <Tim(at)myrv10.com (Tim(at)myrv10.com)>

 

 I had an interesting day flying today!

 I took a flight 92nm to drop off the kids, and while I was doing it,

 I was beta testing a cool new feature that NavWorx added just

 in the last couple days.  More on that when I can.

 

 But anyway, my wife flew on the return leg, so I fired up the laptop and did some data logging of the stations I was receiving, up here in

 central/western Wisconsin, now that ADS-B covers us.  

[b]

_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor
KCHD

Tim Olson

Joined: 25 Jan 2007
Posts: 2879

Posted: Sun Sep 26, 2010 5:51 am Post subject: Wisconsin ADS-B Rollout

Kelly,



Here is a website for ITT, the company contracted to do the

rollout.

http://www.itt.com/adsb/budget.html

I attached a .jpg with how it basically should look now or

within a few days. I got lucky searching for it because I

had just gotten a .pdf of that graphic titled ITT Segment 1

Roll-Out, and by googling "segment" instead of phase it was

near the top of the list.



It's been a long time since I asked them about TSO certification

but I'm nearly certain that TSO'd is their goal. They did

get FCC Certification, and yesterday in talking to them after

doing a beta test on a new release, a couple of random

comments regarding doing things because of certification

requirements were brought up, so I'm sure that's their goal.



They do have the means to utilize external GPS's, like get

your position info from a certified unit like the GNS480

and 430W, so that is a good path for the certified folks.

It also does have an internal GPS with an external antenna

port.  I have an external antenna on mine, but since this

one isn't navigational in importance, it's mounted in the

wee space under the forward part of my Vertical Stab

fairing...just onto the metal deck above the trim

servos.  For these purposes it should be plenty

good and it's been very reliable for me.  I do think

that it's probably going to end up being useless unless

the policy changes, to have only ADS-B IN, and use the

ADS600.  If you want ADS-B I think you'll want a full

in/out solution like their ADS600B.  From what I

understand, they're starting to only broadcast traffic

for people who are broadcasting, in some areas....the

areas getting the newer GBT's.  I think that's a bad

policy from a safety perspective.  But, it's do-able

because traffic is broadcast via lat/long, and so they

can easily receive your transmission and say, "ok,

I'll broadcast traffic within 10/20/30 miles of him".

Menwhile, the guy who isn't broadcasting, who's

25 miles away but in good coverage, may not see anything

even that's 2 miles at 12 o'clock headed right at him.

It's something they started doing not all that long ago.

So when you equip, equip with IN/OUT I guess is the

motto.



When I do my trip coming up, I'll be covering a lot of

miles and my write-up will definitely talk about

my traffic coverage experience at that time, so we'll

have to see how good it ends up being.  Hopefully

there will be many planes in the sky with me or I

may not know. 



Tim Olson - RV-10 N104CD

do not archive

On 9/26/2010 8:09 AM, Kelly McMullen wrote:

 	  Quote: 	
		   Sounds great Tim. Is there some web site where we can see when our own

 local areas will have ADS-B ground stations? I've not had much success

 searching for that information. Has NavWorx given any indication if they

 will seek TSO certification of their ADS600 transceiver? I already see

 needing an extra external GPS antenna for whatever ADS-B unit gets

 installed.



 On Sat, Sep 25, 2010 at 9:27 PM, Tim Olson <Tim(at)myrv10.com

 <mailto:Tim(at)myrv10.com>> wrote:



     

     <mailto:Tim(at)myrv10.com>>



     I had an interesting day flying today!

     I took a flight 92nm to drop off the kids, and while I was doing it,

     I was beta testing a cool new feature that NavWorx added just

     in the last couple days.  More on that when I can.



     But anyway, my wife flew on the return leg, so I fired up the laptop

     and did some data logging of the stations I was receiving, up here in

     central/western Wisconsin, now that ADS-B covers us.

 *

 *

ITT_Segment_1_Roll-Out_Only.jpg

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Kelly McMullen

Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ

Posted: Sun Sep 26, 2010 6:35 am Post subject: Wisconsin ADS-B Rollout

Thanks for all that detail Tim. Exactly what I was looking for. I agree that the 6000B makes more sense to ensure you are triggering traffic transmission.



On Sun, Sep 26, 2010 at 6:43 AM, Tim Olson <Tim(at)myrv10.com (Tim(at)myrv10.com)> wrote:

 [quote]Kelly,

 

 Here is a website for ITT, the company contracted to do the

 rollout.

 http://www.itt.com/adsb/budget.html

 I attached a .jpg with how it basically should look now or

 within a few days. I got lucky searching for it because I

 had just gotten a .pdf of that graphic titled ITT Segment 1

 Roll-Out, and by googling "segment" instead of phase it was

 near the top of the list.

 [b]

_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor
KCHD

Robin(at)PaintTheWeb.com
Guest

Posted: Sun Sep 26, 2010 7:41 am Post subject: Wisconsin ADS-B Rollout

Who's ADS-b hardware do you have? I was going to add the NavWorx system to

my 8A but I was told they were not shipping.



Robin

Tim Olson

Joined: 25 Jan 2007
Posts: 2879

Posted: Sun Sep 26, 2010 11:21 am Post subject: Wisconsin ADS-B Rollout

I have NavWorX.  You are correct about not shipping for a short time.  A cobham subsidiary supplied part that was defective is held up until they deliver some good ones.  But it hopefully will be shipping again in the not too distant future.  You'll have to ask them about the timeline but it'll be coming.

Tim

Do not archive



On Sep 26, 2010, at 10:33 AM, Robin Marks <Robin(at)PaintTheWeb.com> wrote:



 	  Quote: 	
		   

 

 Who's ADS-b hardware do you have? I was going to add the NavWorx system to

 my 8A but I was told they were not shipping.

 

 Robin

Tim Olson

Joined: 25 Jan 2007
Posts: 2879

Posted: Mon Sep 27, 2010 11:06 am Post subject: Wisconsin ADS-B Rollout

I saw this today....sounds like they're accelerating the

deployment a bit, so it won't be long for all the other

regions.

ADS-B FULL DEPLOYMENT BY 2013

(http://www.avweb.com/eletter/archives/avflash/1734-full.html#203337)

ADS-B will be fully operational in the U.S. by 2013; the FAA announced

Friday that it had approved full deployment of the satellite and

ground-based system. In a statement

(http://www.faa.gov/news/updates/?newsId=61586), the agency said it

approved full deployment after successful testing of full systems at

Philadelphia, Louisville, over the Gulf of Mexico and in Alaska proved

it could work in the full range of operating conditions. "This

approach ensured that ADS-B was tested in the most extreme

environments, allowing the agency to uncover and resolve any anomalies

before the commissioning," the statement said.



The FAA has already installed 300 of the 800 systems that will be 

required to ensure ADS-B provides all the coverage that radar does now. 

In mountainous areas, a system of ground sensors called Wide Area 

Multilateration will provide coverage for the nooks and crannies that 

the ADS-B sensors can't see. WAM will also serve as a backup for GPS in 

high-traffic areas. By 2020, aircraft operating in controlled airspace 

will have to have ADS-B out capability to announce their position and 

identification. If they have the optional ADS-B in they'll get cockpit 

displays of traffic and weather.

http://www.avweb.com/eletter/archives/avflash/1734-full.html#203337

Tim Olson - RV-10 N104CD

do not archive

Nick Leonard

Joined: 18 Jun 2007
Posts: 35
Location: Sacramento, CA

Posted: Mon Sep 27, 2010 3:54 pm Post subject: Re: Wisconsin ADS-B Rollout

Tim, 

Did I read too much into your posting, that if you were to do your panel over again, you would put in a GTX 327 instead of the GTX 330 Mode S transponder, given what you get with the ADS-B?



Nick

_________________
Nick Leonard
RV-10 (40015) Flying

gengrumpy(at)aol.com
Guest

Posted: Mon Sep 27, 2010 4:05 pm Post subject: Wisconsin ADS-B Rollout

So........I hope that the avionics guys will (by 2013) offer us GA  

guys a simple, affordable "drop in" box where we can all do "in-out"  

with the cost of a transponder upgrade plus additional antenna.



Just kidding.



Thought we were in the land of OZ for a minute.



grumpy



do not archive



On Sep 27, 2010, at 2:00 PM, Tim Olson wrote:



 	  Quote: 	
		   



 I saw this today....sounds like they're accelerating the

 deployment a bit, so it won't be long for all the other

 regions.

 ADS-B FULL DEPLOYMENT BY 2013

 (http://www.avweb.com/eletter/archives/avflash/1734-full.html#203337)

 ADS-B will be fully operational in the U.S. by 2013; the FAA announced

 Friday that it had approved full deployment of the satellite and

 ground-based system. In a statement

 (http://www.faa.gov/news/updates/?newsId=61586), the agency said it

 approved full deployment after successful testing of full systems at

 Philadelphia, Louisville, over the Gulf of Mexico and in Alaska proved

 it could work in the full range of operating conditions. "This

 approach ensured that ADS-B was tested in the most extreme

 environments, allowing the agency to uncover and resolve any anomalies

 before the commissioning," the statement said.



 The FAA has already installed 300 of the 800 systems that will be  

 required to ensure ADS-B provides all the coverage that radar does  

 now. In mountainous areas, a system of ground sensors called Wide  

 Area Multilateration will provide coverage for the nooks and  

 crannies that the ADS-B sensors can't see. WAM will also serve as a  

 backup for GPS in high-traffic areas. By 2020, aircraft operating in  

 controlled airspace will have to have ADS-B out capability to  

 announce their position and identification. If they have the  

 optional ADS-B in they'll get cockpit displays of traffic and weather.

 http://www.avweb.com/eletter/archives/avflash/1734-full.html#203337

 Tim Olson - RV-10 N104CD

 do not archive

Tim Olson

Joined: 25 Jan 2007
Posts: 2879

Posted: Mon Sep 27, 2010 4:14 pm Post subject: Wisconsin ADS-B Rollout

Nope, the 330 still offers more, like ARINC, that I am in need of.  Plus it still does mode s to my gns480.

Tim



On Sep 27, 2010, at 6:54 PM, "Nick Leonard" <nick(at)nleonard.com> wrote:



 	  Quote: 	
		   

 

 Tim, 

 Did I read too much into your posting, that if you were to do your panel over again, you would put in a GTX 327 instead of the GTX 330 Mode S transponder, given what you get with the ADS-B?

 

 Nick

 

 --------

 Nick Leonard

 RV-10 (40015) Finish

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=313930#313930

Kelly McMullen

Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ

Posted: Mon Sep 27, 2010 5:03 pm Post subject: Wisconsin ADS-B Rollout

Hmm, what does the 330 do by ARINC that your ADS-B receiver would not do? Both would supply TIS. What else does Mode S do for you besides tell the FAA who you are at all times?



On Mon, Sep 27, 2010 at 8:11 PM, Tim Olson <Tim(at)myrv10.com (Tim(at)myrv10.com)> wrote:

 [quote]--> RV10-List message posted by: Tim Olson <Tim(at)myrv10.com (Tim(at)myrv10.com)>

  

 Nope, the 330 still offers more, like ARINC, that I am in need of.  Plus it still does mode s to my gns480.

 Tim

 



[b]

_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor
KCHD

Tim Olson

Joined: 25 Jan 2007
Posts: 2879

Posted: Tue Sep 28, 2010 5:42 am Post subject: Wisconsin ADS-B Rollout

The 330 provides more flexibility and capability for panel

installations, due to it's variety of ports.  It has 4 ARINC

Ports and can act as an ARINC concentrator, while the 327

has none.  It also has 2 complete pairs of serial

ports, with 2 in's and 2 out's.  The 327 only has one

In/Out pair, and then an additional IN.  Some of these things

may or may not matter to someone building a panel, depending

on their installation.  Or, it may not initially matter, but

may later be helpful.  Also, some of the ports on the

transponders can only support certain data messages.  For

instance, Garmin's REMOTE format doesn't contain Pressure

altitude.  But, you can get that out from a 330 via ARINC,

as it IS sent via the GARMIN and GARMIN+TIS format.  And like

I mentioned, some of these things may not matter to someone

today, but may matter later.  I feed the NavWorx it's PALT

via the ARINC output from the 330. It was real convenient

in my installation, and will probably be that way permanently.

It also was what made composite TIS possible for me.  There

are a variety of things that will you'll see changing as

ADS-B rolls out, and having some of the capabilities may help

people with easier integrations of that gear.



Additionally, the GTX330 would be upgradeable to 1090ES if

some day you find yourself wanting to go that route, so while

UAT's are a great way for us to go, it opens the door to

that possibility too.



In my install, the GTX330 is the only TIS device that is

connected to my GNS480, because the data format used by

the Chelton is different than what the 480 would use, so

I can only choose one. But, even without Composite TIS,

I'll still have ModeS TIS on the 480...and ADS-B on

the Chelton.



As as aside, the GTX327 and GTX330 are remote-operable via

some systems, and you'll likely find this to be a very

valuable asset in the future too.  More on that some day.



Regarding the "tell the FAA who you are at all times" theme,

I don't think privacy is something that anyone needs bother

to talk about.  Since 2001, the powers in charge in the

country long since wiped out all privacy, and it's been

happening from both parties, and in both that and the

present administration.  The fact is, with Mode S, they

have your ICAO Code that is tied to your N-Number.  When

you look up your aircraft registration, the code is shown

on the FAA site.  Well, that same ICAO code is required

to be broacast via ADS-B.  So, to meet the mandate, you

are, unless you want to be severely restricted in flight

area, going to be broadcasting your position and

identification to the government....with either system.

And both will broadcast your altitude.  So will many people's

APRS systems broadcast your position, and also your ELT's

likely will.  So from an aviation perspective, there is

no privacy, and they will always know where you are.

They'll also know who you email, what you say, who you

text, who you connect with via blackberry, you location

via your cellphone signal, and pretty much everything else

they want to know.  The privacy issue while flying doesn't

bother me.  While not flying, I think we went so far off

the cliff that privacy already died.



Needless to say, the GTX330 is still going to be a great

choice for a lot of builders.  The 327 is a good

transponder but may require a build put more time

and thought into how they're going to get things to

talk the language they need to the other systems.



Tim Olson - RV-10 N104CD

do not archive

On 9/27/2010 7:56 PM, Kelly McMullen wrote:

 	  Quote: 	
		   Hmm, what does the 330 do by ARINC that your ADS-B receiver would not

 do? Both would supply TIS. What else does Mode S do for you besides tell

 the FAA who you are at all times?



 On Mon, Sep 27, 2010 at 8:11 PM, Tim Olson <Tim(at)myrv10.com

 <mailto:Tim(at)myrv10.com>> wrote:



     

     <mailto:Tim(at)myrv10.com>>



     Nope, the 330 still offers more, like ARINC, that I am in need of.

       Plus it still does mode s to my gns480.

     Tim

Tim Olson

Joined: 25 Jan 2007
Posts: 2879

Posted: Wed Oct 06, 2010 12:36 pm Post subject: Wisconsin ADS-B Rollout

I thought I'd fill you all in on the new interface/integration that is 

done now for NavWorx ADS600B.



The new integration is that now, if you have a GTX330 (and presumably 

GTX327, although that isn't tested yet) transponder, you will will be 

able to pass the ADS600B your squawk/ident/mode information without 

having a panel-mounted control head.



One thing many people don't know about ADS-B is that the transmitter 

broadcasts your info, just like a Mode S transponder, including 

N-Number/ICAO code, squawk code, does IDENT, and there is a ALT mode and 

Standby/GND mode too. In time, you will see NavWorx work with 

experimental EFIS companies to provide a method of on-screen code 

setting of the UAT, but that is one area where experimentals will

benefit over certified systems, as Garmin and others likely won't

make it so easy to interoperate with 3rd party system.



For today, you could operate those UAT's just squawking 1200 all the 

time, and be fine, since they're not required anyway. But eventually 

you'll need to fit and play nicely in the IFR system and have squawk 

codes broadcast. That will likely mean, for many people, adding

a control head like a transponder face panel.



The integration that I just tested with the GTX330 transponder provides 

for monitoring the Transponders functional mode and mimic-ing what it 

does. If you squawk 1234, the UAT adopts that squawk. If you IDENT, so 

does the UAT. If you hit STBY, the UAT stops transmitting, if you hit 

ALT, the UAT starts transmitting. For GTX330/327 users, this is sweet.

No control head required and you have the benefit of only having to set

the squawk in one place...the transponder.



The GTX330 is the perfect transponder for this because it has ARINC 

outputs, which will be nice because with ARINC out, you can have the 

option of Composite TIS if you want, but it also feeds Pressure Altitude 

to the UAT. Pressure altitude is NOT on the serial line coming out of 

the GTX330's "REMOTE" format of data. The GTX330 also has 2 serial IN 

and 2 serial OUT ports. On my install, the #1 pair is for my GNS480's 

remote controlling of the transponder. My #2 IN is for the altitude 

encoder. The #2 OUT is not used, but I used it set to "REMOTE" to 

connect to the UAT, which is how the UAT gets the squawk info.



If you have a GTX327, it also has the REMOTE option, but, it only has 1 

IN/OUT pair, and then a separate IN. This means that if you have a 

GNS480, you'll have to split the REMOTE serial line OUT and use that 

feed to the UAT. If you do not have a GNS480, you probably won't have 

anything on Serial #1 anyway, so you can just turn on the OUT side to 

"REMOTE" and use that. The #2 IN is used again for the encoder. The 

GTX327 does not have any ARINC ports to provide Pressure Altitude to the 

UAT. NavWorx does have the capability to add additional serial ports to 

the box in the future or can re-purpose their RS-422 port

into an RS-232 encoder input. Presently, the above interface that I'm

talking about uses the ENCODER IN RS-232 channel, and in config mode you 

can set it to "Transponder Control" instead. So if you already were 

using the encoder input, the tranponder control won't work for you right 

now. That is why the ARINC input is so nice. NavWorx did tell me that 

they have a couple different ways to get more serial

capability if they need it, so 327 users will likely have all this

capability via RS-232 when they need it.



At any rate, I thought I'd fill you in on this cool interface now. I've 

participated in some of the testing of their new software revs, and 

particularly got to do a lot with this one.



So now you know the rest of the story...



Tim Olson - RV-10 N104CD

do not archive

dave.saylor.aircrafters(a
Guest

Posted: Wed Oct 06, 2010 1:10 pm Post subject: Wisconsin ADS-B Rollout

I'll be all ears for the report on coverage in California!



Dave Saylor

AirCrafters

140 Aviation Way

Watsonville, CA 95076

831-722-9141 Shop

831-750-0284 Cell



On Wed, Oct 6, 2010 at 1:32 PM, Tim Olson <Tim(at)myrv10.com> wrote:

 	  Quote: 	
		   

 I thought I'd fill you all in on the new interface/integration that is done

 now for NavWorx ADS600B.



 The new integration is that now, if you have a GTX330 (and presumably

 GTX327, although that isn't tested yet) transponder, you will will be able

 to pass the ADS600B your squawk/ident/mode information without having a

 panel-mounted control head.



 One thing many people don't know about ADS-B is that the transmitter

 broadcasts your info, just like a Mode S transponder, including

 N-Number/ICAO code, squawk code, does IDENT, and there is a ALT mode and

 Standby/GND mode too. In time, you will see NavWorx work with experimental

 EFIS companies to provide a method of on-screen code setting of the UAT, but

 that is one area where experimentals will

 benefit over certified systems, as Garmin and others likely won't

 make it so easy to interoperate with 3rd party system.



 For today, you could operate those UAT's just squawking 1200 all the time,

 and be fine, since they're not required anyway. But eventually you'll need

 to fit and play nicely in the IFR system and have squawk codes broadcast.

 That will likely mean, for many people, adding

 a control head like a transponder face panel.



 The integration that I just tested with the GTX330 transponder provides for

 monitoring the Transponders functional mode and mimic-ing what it does. If

 you squawk 1234, the UAT adopts that squawk. If you IDENT, so does the UAT.

 If you hit STBY, the UAT stops transmitting, if you hit ALT, the UAT starts

 transmitting. For GTX330/327 users, this is sweet.

 No control head required and you have the benefit of only having to set

 the squawk in one place...the transponder.



 The GTX330 is the perfect transponder for this because it has ARINC outputs,

 which will be nice because with ARINC out, you can have the option of

 Composite TIS if you want, but it also feeds Pressure Altitude to the UAT.

 Pressure altitude is NOT on the serial line coming out of the GTX330's

 "REMOTE" format of data. The GTX330 also has 2 serial IN and 2 serial OUT

 ports. On my install, the #1 pair is for my GNS480's remote controlling of

 the transponder. My #2 IN is for the altitude encoder. The #2 OUT is not

 used, but I used it set to "REMOTE" to connect to the UAT, which is how the

 UAT gets the squawk info.



 If you have a GTX327, it also has the REMOTE option, but, it only has 1

 IN/OUT pair, and then a separate IN. This means that if you have a GNS480,

 you'll have to split the REMOTE serial line OUT and use that feed to the

 UAT. If you do not have a GNS480, you probably won't have anything on Serial

 #1 anyway, so you can just turn on the OUT side to "REMOTE" and use that.

 The #2 IN is used again for the encoder. The GTX327 does not have any ARINC

 ports to provide Pressure Altitude to the UAT. NavWorx does have the

 capability to add additional serial ports to the box in the future or can

 re-purpose their RS-422 port

 into an RS-232 encoder input. Presently, the above interface that I'm

 talking about uses the ENCODER IN RS-232 channel, and in config mode you can

 set it to "Transponder Control" instead. So if you already were using the

 encoder input, the tranponder control won't work for you right now. That is

 why the ARINC input is so nice. NavWorx did tell me that they have a couple

 different ways to get more serial

 capability if they need it, so 327 users will likely have all this

 capability via RS-232 when they need it.



 At any rate, I thought I'd fill you in on this cool interface now. I've

 participated in some of the testing of their new software revs, and

 particularly got to do a lot with this one.



 So now you know the rest of the story...



 Tim Olson - RV-10 N104CD

 do not archive

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