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Ben[_2_]
December 17th 08, 05:17 PM
A portable ADS-B unit - no price.

http://www.dtiweb.net/main%20menu%20options/adsb.html

ADS-B
Automatic Dependent Surveillance Broadcast known as ADS-B is the
future for all aircraft.
Coming Soon expected availability late calendar 08
The ADS-B system is destined to become a nationwide r equirement for
all aircraft flying in United States air space. DTI, a proven leader
in the development of new technologies for both m anned aircraft,
introduces a new light weight simple to use ADS-B Transmission system.
DTI’s ADS-B system is fully compliant with
TSO-C154b.

What is ADS-B?
Automatic - No pilot input required.
Dependant - Uses accurate position and velocity data from aircraft's
navigation system (example GPS).
Surveillance -Provides aircraft position, altitude, velocity, and
other data to facilities that require theinformation.
Broadcast - Any appropriately equipped ground station or aircraft can
monitor the ADS-B signal.

The DTI ADS-B is a portable stand alone device. No upgrades to your
aircraft would be required to comply with new regulations. Simply
place it in the cockpit and turn it on. Operation of the unit can be
determined by four LEDs on the front of the unit. The GPS sub-system
will link up with GPS satellites allowing the pilot to fly the plane
while the DTI ADS-B broadcasts position, altitude, velocity and other
data in a standard ADS-B stream every second during flight.

The DTI ADS-B works off internal batteries. No external power source
is required and weighs less than two pounds. It incorporates one GPS
antenna on its outer casing or one remote GPS antenna for users who
prefer an externally mounted antenna.

DTI ADS-B Units come complete with transmission antenna, GPS antenna,
mounting bracket and instruction manual. The unit comes with tail
numbers and aircraft information encoded in the unit.

Physical Specifications
Height 1.53 in
Width 3.06 in
Length 4.77 in
Weight 1.25 in

Electrical Specifications
Power 0.978 watts
Voltage 2.4 - 4 VDC (battery)
Input current 0.8 Amps

UAT performance Specs
TSO Compliance Obtaining TSO-154
Frequency 978
Tx Power 10 watts
Frequency Tolerance +/- 20 ppm
Modulation Continuous Phase frequency Shift Keying

GPS/WAAS Receiver Specs
TSO Compliance Obtaining TSO-C145a (RTCA/DO-229C)
Chipset SiRF Star III
# of Channels 20
Frequency L1, 1575.42 MHz
Sensitivity -159 dBm
Lat/Long position accuracy 10 meters - 2D RMS 5 meters - 2D RMS, WAAS
enabled
Velocity 515 meters/second (1000 Kts) max
TTFF 42 sec. avg (Time to first fix)
Reacquisition 0.1 sec. avg
Datum WGS-84

Andy[_1_]
December 17th 08, 05:30 PM
On Dec 17, 10:17*am, Ben > wrote:
> A portable ADS-B unit - no price.

>Electrical Specifications
>Power 0.978 watts
>Voltage 2.4 - 4 VDC (battery)
>Input current 0.8 Amps

I had hoped DTI were more in touch with the real world than this would
indicate. Where is that power going to come from? Why isn't the unit
compatible with standard aircraft power systems?

I saw no reference to capability to support CDTI. Do they expect to
sell a separate receiver?

Andy

Ben[_2_]
December 17th 08, 05:34 PM
On Dec 17, 11:30*am, Andy > wrote:
> On Dec 17, 10:17*am, Ben > wrote:
>
> > A portable ADS-B unit - no price.
> >Electrical Specifications
> >Power 0.978 watts
> >Voltage 2.4 - 4 VDC (battery)
> >Input current 0.8 Amps
>
> I had hoped DTI were more in touch with the real world than this would
> indicate. *Where is that power going to come from? *Why isn't the unit
> compatible with standard aircraft power systems?
>
> I saw no reference to capability to support CDTI. *Do they expect to
> sell a separate receiver?
>
> Andy

I don't know - just came across the site following a news release
concerning a govt contract awarded DTI concerning UAVs.

Ben

Eric Greenwell
December 17th 08, 09:22 PM
Andy wrote:
> On Dec 17, 10:17 am, Ben > wrote:
>> A portable ADS-B unit - no price.
>
>> Electrical Specifications Power 0.978 watts Voltage 2.4 - 4 VDC
>> (battery) Input current 0.8 Amps
>
> I had hoped DTI were more in touch with the real world than this
> would indicate. Where is that power going to come from? Why isn't
> the unit compatible with standard aircraft power systems?
>
> I saw no reference to capability to support CDTI. Do they expect to
> sell a separate receiver?

I just sent this email to DTI:

> I'm looking for more information about your portable ADS-B unit than
> you have on your website. I fly a sailplane, currently with a
> transponder, but I very interested in ADS-B. Specifically, about your
> unit:
>
> 1. When will it be available?
> 2. What will it cost?
> 3. Where in the
> country will it usable with ATC?
> 4. Can it be used in lieu of
> transponder?
> 5. Does it receive information from other ADS-B units or
> ATC, and can this information be displayed on any moving map
> displays?
>
> Regards,
>
> Eric Greenwell Richland, WA

--
Eric Greenwell - Washington State, USA
* Change "netto" to "net" to email me directly

* Updated! "Transponders in Sailplanes" http://tinyurl.com/y739x4
* New Jan '08 - sections on Mode S, TPAS, ADS-B, Flarm, more

* "A Guide to Self-launching Sailplane Operation" at www.motorglider.org

cernauta
December 18th 08, 02:06 AM
On Wed, 17 Dec 2008 21:22:39 GMT, Eric Greenwell
> wrote:

>>
>> 1. When will it be available?
>> 2. What will it cost?
>> 3. Where in the
>> country will it usable with ATC?
>> 4. Can it be used in lieu of
>> transponder?
>> 5. Does it receive information from other ADS-B units or
>> ATC, and can this information be displayed on any moving map
>> displays?

well done.

Anyway, a very promising device, that was presented to the IGC by
Bernald Smith during the latest plenary meeting in march.

It's on my buy list...

Aldo Cernezzi

Paul Remde
December 18th 08, 02:37 AM
Hi Eric,

I look forward to hearing more about the unit. It look a LOT like the unit
that Mitre showed at our meeting at the SSA Convention earlier this year.
Mitre was selling licenses to use their design for about $10k which seems
like practically nothing considering the design work was done - to a certain
extent.

I think it is great that a company is selling the unit. But it is a
transmitter only - designed for use in UATs. Mitre has recently designed an
ADS-B transceiver. I look forward to the day it is available at a reasonable
cost.

Pau Remde

"Eric Greenwell" > wrote in message
...
> Andy wrote:
>> On Dec 17, 10:17 am, Ben > wrote:
>>> A portable ADS-B unit - no price.
>>
>>> Electrical Specifications Power 0.978 watts Voltage 2.4 - 4 VDC
>>> (battery) Input current 0.8 Amps
>>
>> I had hoped DTI were more in touch with the real world than this
>> would indicate. Where is that power going to come from? Why isn't
>> the unit compatible with standard aircraft power systems?
>>
>> I saw no reference to capability to support CDTI. Do they expect to sell
>> a separate receiver?
>
> I just sent this email to DTI:
>
>> I'm looking for more information about your portable ADS-B unit than
>> you have on your website. I fly a sailplane, currently with a
>> transponder, but I very interested in ADS-B. Specifically, about your
>> unit:
>>
>> 1. When will it be available? 2. What will it cost? 3. Where in the
>> country will it usable with ATC? 4. Can it be used in lieu of
>> transponder? 5. Does it receive information from other ADS-B units or
>> ATC, and can this information be displayed on any moving map
>> displays?
>>
>> Regards,
>>
>> Eric Greenwell Richland, WA
>
> --
> Eric Greenwell - Washington State, USA
> * Change "netto" to "net" to email me directly
>
> * Updated! "Transponders in Sailplanes" http://tinyurl.com/y739x4
> * New Jan '08 - sections on Mode S, TPAS, ADS-B, Flarm, more
>
> * "A Guide to Self-launching Sailplane Operation" at www.motorglider.org

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