Trig Avionics Limited
Company Overview
Trig Avionics Limited was founded in January 2004 to develop innovative
avionics products for general aviation. Based in Edinburgh, Scotland,
Trig are specialists in low power, high tech solutions to existing and
emerging requirements in general aviation avionics. Trig is a privately held
limited company.
TT21 & TT22
The TT21 and TT22 are a very interesting new transponders. They are Mode S
transponders with built-in altitude encoders, and remote heads - at a great
price! Also, the TT21 uses half the power used by the Becker ATC4401 - which is
very impressive. You can see a current draw comparison that includes
the current required by the altitude encoder used by a Becker transponder
here: Transponder
Comparison Table. The TT21 is a Class 2 transponder with 125 Watts
of transmit power which is rated for use up to 15,000 feet. The TT22
is a Class 1 transponder with 250 Watts of transmit power. Class 1
transponders are used on high performance aircraft – those cruising faster
than 175 knots, and operating above 15,000 feet.
A Transponder in Every Sailplane
I strongly believe that every sailplane should have a working transponder in
it. I'm sure you will think that is because I sell them. But the main reason
is that I fear that in the future a collision will occur between a glider
(without a transponder) and a commercial airliner. In addition to the
tragic loss of life, we soaring pilots may lose access to airspace. It
is my sincere hope that this transponder will break down many of the
barriers which have kept glider pilots from installing transponders in their
gliders. The units small size and low power consumption make it very
attractive.
F.A.A. Approval Received
The Trig TT21 has received approval for use in Europe, and received FAA TSO approval
in early September, 2009. The TT22 has also received the same
approvals.
Details on the F.A.A. Approvals
TSO-C112c - Air Traffic Control Radar Beacon System/Mode, Select (ATCBS/Mode
S) Airborne Equipment
TSO-C166a - Extended Squitter Automatic Dependent Surveillance -
Broadcast (ADS-B), and Traffic Information Service - Broadcast (TIS-B),
Equipment Operating on the Radio Frequency of 1090 Megahertz (MHz)
TSO-C88b - Automatic Pressure reporting Code-Generating Equipment
Brochures and Manuals
TT21
TT22 Transponder Overview Article
Eric Greenwell has written a very nice article which gives an overview
of transponder terminology and available products. This article was
originally published as two articles in Soaring magazine in February and
March 2002,
and updated January, 2008 for publication on the
Soaring Safety Foundation web
site. Eric flies with a Becker transponder in his motorglider.
The article is available here:
http://www.soaringsafety.org/prevention/articles.html.
Transponder Comparison Table
The Transponder
Comparison Table makes it easy to compare specifications of the
available transponders.
Transponder Antenna Tips
DG has an excellent document on their web site with details on how to
mount transponder antennas to gliders.
http://www.dg-flugzeugbau.de/Data/TN-DG/service-infos/2004-53-e.pdf
Warranty (U.S.A. Customers)
SEA_TT21_Warranty.pdf
Example Systems
Wiring harness for connecting
TT21 or TT22 to TC20 and 12V power - $145 (0.5 m or 1 m) or $155 (3 m)
The basic system includes all the required connectors, but they are not
wired together. This is a pre-wired wiring harness which makes
installation faster and trouble-free. It may also save you delays and
repair bills should you accidentally connect something incorrectly.
This wiring harness is assembled and tested using a cable tester by Larry
Goddard. It has a DB-9f connector at the TC20 end and a DB-25m
connector at the TT21 end. It also includes power leads for 10 to 30
VDC. There are 3 cable length options: 0.5 m (19.7 inches), 1 m (3.281 feet) and 3 m (9.84
feet). The 0.5 m length is perfect for installations where the TT21
Transponder Unit will be mounted near the TC20 Control Unit (such as in
front of the instrument panel in the nose of a glider) and the 3 m version
should be long enough for mounting the TT21 unit behind the pilot, near
where the antenna is installed.
Note: Wiring for external "Squat" and "Ident" switches is not included.
The squat switch input is only for aircraft with built-in squat switch
circuitry. It is my understanding that a landing gear switch in a
glider can not be used as a squat switch because it would cause the
transponder to send incorrect information while the landing gear is down
during aerotow and in the landing pattern. The "Ident" switch is not
necessary because the "IDT" pushbutton on the TC210 control unit has the
same function.
Antenna Cables
I offer transponder antenna cables made by Larry Goddard in several lengths.
They include a TNC connector for connection to the transponder and a BNC
connector for connection to a transponder antenna. They are available
in 3 m (9.84 feet) and 5 m (16.4 feet) lengths.
Transponder Antennas
Several transponder antenna options are listed on the
Antennas page. The RAMI rod style and
"shark fin" styles are the most popular. I recommend the shark fin
style because I recall from my fluid dynamics courses that the two worst
types of bodies in regard to drag are spheres and cylinders. For
installations inside fiberglass, wood and fabric gliders, or in the vertical
fin in carbon fiber gliders (with the fin made of fiberglass) you may want
to consider the L2 antenna from AAE and the SA-005
antenna from Sportcraft.
Size Comparison
Below is a photo showing just how much smaller the TT21 is than a Becker
ATC4401 transponder. The Becker transponder and ACK A-30.4 altitude
encoder are on the left. The TT21 transponder and TC20 control unit
are on the right. Click on the image to view a larger version.
How to Order
To order a product, click on the
button next to the product.
When you are ready to complete your order, click on the
button.
Click on the small images to view larger versions.
|
Part # |
Description |
Photo
Click on image to view larger version |
Price |
Lead-time |
|
|
Trig-TT21 |
Trig TT21 Class 2 Mode S
Transponder with Built-in Altitude Encoder
The TT21 is a very interesting new transponder. It is a Mode S
transponder with a built-in altitude encoder, and a remote head - at a
great price!
The TT21 is a Class 2 transponder -
certified for use up to 15,000 feet. The TT22 (below) is a Class 1
transponder - certified for use up to 35,000 feet. If you plan to
fly over 15,000 feet, you will probably want the TT22 (below).
With a front panel
controller smaller than a standard instrument, and a
remote transponder that is not much bigger than a pack
of cards, the TT21 can fit into the smallest of aircraft
– and yet it is fully certified and compliant with all
the transponder requirements.
- Low Weight - less
than 500 grams!
- Minimal Panel Space
- Low Power
Consumption
- 130 Watts Nominal
Output
- Integrated Altitude
Encoder
- Simple Installation
- Easy to use rotary
knobs
- Support for 1090ES
ADS-B Out
The TT21 system is the smallest,
lightest, Mode S general aviation transponder. This two part system,
which includes an integrated altitude encoder, can fit into the smallest
of aircraft – and yet it is fully certified and compliant with all the
transponder requirements.
The front panel controller can be
installed in a standard 2¼ inch instrument cut-out, or where space is
really tight it can fit a compact cut-out just 45mm high. The TT21
transponder itself is also only 45mm high, and can be installed anywhere
convenient in the airframe.
Mode S for Light Aviation
The TT21 transponder is an ED-73B Class 2 compliant Mode S level 2
datalink transponder, with support for extended squitter. It meets all
the requirements for Mode S elementary surveillance transponders in
Europe for aircraft flying below 15,000 feet and with airspeeds below
175 knots. It can be used for both IFR and VFR flight.
The TT21 also supports 1090 MHz Automatic
Dependent Surveillance Broadcast (ADS-B) extended squitter, known as
“ADS-B out”. This provides improved airborne surveillance, vital
information for airport ground surveillance, and is a key feature of
future airspace plans. An appropriate GPS receiver is required to enable
the ADS-B capability.
Flexible Installation
The TT21 system can be easily fitted to aircraft even when there are
space and weight constraints. The front panel controller fits into any
panel, and takes less space than a standard instrument. Only a few
centimetres are needed behind the panel to allow room for the connector
and the static port interface. This means that the TT21 transponder is
not just suitable for conventional light aircraft; it can be fitted into
gliders, antique aircraft, and flex-wing microlight panels. The control
panel is splash proof for open cockpit installations.
A lightweight cable runs from the control
panel to the transponder unit which can mounted anywhere in the
aircraft. The transponder unit then connects to the antenna and aircraft
power supply. A quick release latch secures the main unit to the
mounting tray, allowing it to be easily removed for security.
Low Power Design
The TT21 has one of the lowest power consumptions for any transponder.
With typical power consumption of around 5 watts, it can operate from
battery power for gliders or balloons for long duration flights. In
powered aircraft you can be sure that the TT21 is not making heavy
demands on your electrical system.
Operating Controls
The front panel controller has easy to operate rotary controls, and
a simple layout. The clear LCD screen shows the Squawk Code, reported
Flight Level, and operating mode of the transponder.
An altitude encoder is built into the
controller, so no extra boxes are needed to complete the transponder
system.
Finally, the controller also acts as the
configuration module for the combined system. With the controller
remaining attached to the aircraft, swapping the TT21 transponder box is
possible without needing any reprogramming of airframe settings.
Light Weight
The TT21 system weighs less than 500 grams, with less than 100 grams in
the front panel controller. For all aircraft low weight translates into
more payload and better efficiency, but for microlight aircraft where
certification weight limits are tight the low weight of the TT21 system
may make it possible for the first time to fit a transponder.
TT21 Specifications
|
Type: |
Class 2 Mode S Level 2 Datalink |
|
Certification: |
ETSO 2C112b, C88a, TSO C112, C88b |
|
Compliance: |
ED73B, DO160E, DO178B level B, DO254, DO181C,
DO260A |
|
Supply Voltage (DC): |
10 – 33 V (works down to 9 V) |
|
Typical Current Consumption: |
Idle: 0.15 A (at 14V) |
|
|
Active: 0.28 A (at 14V) |
|
Transmitter Power: |
130W nominal at connector |
|
Operating Temperature: |
-40 to +70 C |
|
Cooling Requirement: |
No fan required |
|
Weight: |
1.0 lb (450 g) |
|
Dimensions: |
Controller: 64 x 45 x 45 mm
Transponder: 62 x 45 x 141 mm |
Included:
-
TT21 Transponder Unit
(box)
-
TC20 Control Unit (User
Interface)
-
Mounting Tray for TT21
transponder unit
-
Adapter for mounting the
TC20 in a 57 mm (2 1/4") instrument hole (with mounting screws)
-
Mounting screws for
mounting the TC20 without the use of the adapter for 57 mm
instrument hole
-
Pneumatic tubing for
connection to static port (connects to TC20 Control Unit)
-
Tee connector for
pneumatic tubing
-
2 x Straight
connector for pneumatic tubing
-
DB-25 m Connector and
backshell for TT21 unit
-
DB-9f Connector and
backshell for TC20 unit
-
Hose clamps for securing
pneumatic tubing in aircraft
-
TNC connector for
antenna (connects to TT21 box)
-
Installation Manual
-
Operating Manual
Not Included:
TT21
and TT22 Brochures, Operating Manuals and Installation Manuals |
 |
$2195 |
In
Stock |
|
|
Trig-TT22 |
Trig TT22 Class 1 Mode S
Transponder with Built-in Altitude Encoder
The TT22 is a very interesting new transponder. It is a Mode S
transponder with a built-in altitude encoder, and a remote head - at a
great price!
The TT22 is a Class 1 transponder -
certified for use up to 35,000 feet. The TT21 (above) is a Class 2
transponder - certified for use up to 15,000 feet. If you plan to
fly over 15,000 feet, you will probably want the TT22 (this one).
With a front panel
controller smaller than a standard instrument, and a
remote transponder that is not much bigger than a pack
of cards, the TT22 can fit into the smallest of aircraft
– and yet it is fully certified and compliant with all
the transponder requirements.
- Low Weight - less
than 500 grams!
- Minimal Panel Space
- Low Power
Consumption
- 250 Watts Nominal
Output
- Integrated Altitude
Encoder
- Simple Installation
- Easy to use rotary
knobs
- Support for 1090ES
ADS-B Out
The TT22 system is the smallest,
lightest, Mode S general aviation transponder. This two part system,
which includes an integrated altitude encoder, can fit into the smallest
of aircraft – and yet it is fully certified and compliant with all the
transponder requirements.
The front panel controller can be
installed in a standard 2¼ inch instrument cut-out, or where space is
really tight it can fit a compact cut-out just 45mm high. The TT22
transponder itself is also only 45mm high, and can be installed anywhere
convenient in the airframe.
Mode S for Light Aviation
The TT22 transponder is an ED-73B Class 1 compliant Mode S level 2 datalink transponder, with support for extended squitter.
Class 1 transponders are used on high performance aircraft – those
cruising faster than 175 knots, and operating above 15,000 feet.
The TT22 also supports 1090 MHz Automatic
Dependent Surveillance Broadcast (ADS-B) extended squitter, known as
“ADS-B out”. This provides improved airborne surveillance, vital
information for airport ground surveillance, and is a key feature of
future airspace plans. An appropriate GPS receiver is required to enable
the ADS-B capability.
Flexible Installation
The TT22 system can be easily fitted to aircraft even when there are
space and weight constraints. The front panel controller fits into any
panel, and takes less space than a standard instrument. Only a few centimetres are needed behind the panel to allow room for the connector
and the static port interface. This means that the TT22 transponder is
not just suitable for conventional light aircraft; it can be fitted into
gliders, antique aircraft, and flex-wing microlight panels. The control
panel is splash proof for open cockpit installations.
A lightweight cable runs from the control
panel to the transponder unit which can mounted anywhere in the
aircraft. The transponder unit then connects to the antenna and aircraft
power supply. A quick release latch secures the main unit to the
mounting tray, allowing it to be easily removed for security.
Low Power Design
The TT22 has one of the lowest power consumptions for any transponder
(other than the TT21). With typical power consumption of around 6 watts,
it can operate from battery power for gliders or balloons for long
duration flights. In
powered aircraft you can be sure that the TT22 is not making heavy
demands on your electrical system.
Operating Controls
The front panel controller has easy to operate rotary controls, and
a simple layout. The clear LCD screen shows the Squawk Code, reported
Flight Level, and operating mode of the transponder.
An altitude encoder is built into the
controller, so no extra boxes are needed to complete the transponder
system.
Finally, the controller also acts as the
configuration module for the combined system. With the controller
remaining attached to the aircraft, swapping the TT22 transponder box is
possible without needing any reprogramming of airframe settings.
Light Weight
The TT22 system weighs less than 500 grams, with less than 100 grams in
the front panel controller. For all aircraft low weight translates into
more payload and better efficiency, but for microlight aircraft where
certification weight limits are tight the low weight of the TT22 system
may make it possible for the first time to fit a transponder.
TT22 Specifications
|
Type: |
Class 1 Mode S Level 2 Datalink |
|
Certification: |
ETSO 2C112b, C88a, TSO C112, C88b |
|
Compliance: |
ED73B, DO160E, DO178B level B, DO254, DO181C,
DO260A |
|
Supply Voltage (DC): |
10 – 33 V (works down to 9 V) |
|
Typical Current Consumption: |
Idle: 0.15 A (at 14V) |
|
|
Active: 0.34 A (at 14V) |
|
Transmitter Power: |
250 W nominal at connector |
|
Operating Temperature: |
-40 to +70 C |
|
Cooling Requirement: |
No fan required |
|
Weight: |
1.0 lb (450 g) |
|
Dimensions: |
Controller: 64 x 45 x 45 mm
Transponder: 62 x 45 x 141 mm |
Included:
-
TT22 Transponder Unit
(box)
-
TC20 Control Unit (User
Interface)
-
Mounting Tray for TT22
transponder unit
-
Adapter for mounting the
TC20 in a 57 mm (2 1/4") instrument hole (with mounting screws)
-
Mounting screws for
mounting the TC20 without the use of the adapter for 57 mm
instrument hole
-
Pneumatic tubing for
connection to static port (connects to TC20 Control Unit)
-
Tee connector for
pneumatic tubing
-
2 x Straight
connector for pneumatic tubing
-
DB-25 m Connector and
backshell for TT22 unit
-
DB-9f Connector and
backshell for TC20 unit
-
Hose clamps for securing
pneumatic tubing in aircraft
-
TNC connector for
antenna (connects to TT22 box)
-
Installation Manual
-
Operating Manual
Not Included:
TT21
and TT22 Brochures, Operating Manuals and Installation Manuals |
|
$2395 |
In
Stock |
|
|
or
