Low Weight - less than 500 grams!
The Trig TT21 is a two part transponder system, which includes an integrated altitude encoder. In design and technology it is equivalent to the TT22, however, the transmitted output power of the TT21 is lower, qualifying the unit as a Class 2 transponder. Class 2 transponders are suitable for aircraft cruising slower than 175 knots, and operating below 15,000 feet, VFR or IFR. If you NEVER exceed these limits either because the aircraft isn't capable or because you set these limits as an operating limitation, then you can use the less expensive model, the TT21. But if you want to have the option to go above 15K or faster than 175 knots, you need the more expensive one.
Minimal Panel Space
Low Power Consumption
11-33 Volt Operation
130 Watts Nominal Output
Integrated Altitude Encoder
Support for 1090ES ADS-B Out
The TT21 can be mounted in a standard 57 mm (2¼ inch) instrument hole, or where space is really tight, in a compact mounting just 42 mm high.
The TT21 is TSO approved for fitting to European and FAA registered aircraft.
* Terms and conditions apply
The UK's Independent Review Site
Many thanks for your exceptional customer service, I always encourage my flying friends to buy from you because of this."
Tony (Tottenham, London)
Pro- active service - can do approach - very refreshing
An extremely pro-active company who you can actually speak to and discuss products and your needs. They are very knowledgeable. They have an excel;lent repair and update facility.
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Orders will continue to be shipped normally until Friday 22nd December.
Products ordered between 23rd December 2017 and 3rd January 2018 will be sent out on 3rd January 2018
Free UK Mainland delivery on orders over £150.00 inc VAT
£5.40 inc VAT (up to 500g Royal Mail 1st Class recorded post)
£7.20 inc VAT/20Kg (ParcelForce 2 working days)
£12.00 inc VAT/20Kg (ParcelForce next working day).
Delivery prices will be calculated and displayed at checkout
Some products entail special delivery costs (e.g. Hazardous goods)
We are an EASA part 145 approved organisation. Our policy is to sell only high quality products which offer good value for money. If you are not completely satisfied with your purchase please return the goods in original condition and packaging within 28 days of purchase for replacement, exchange, or a full no quibble refund.