Had to check that I had a TT21. In fact it is a TT31.
After installation years ago, when I got a GA techie to calibrate and
certify the unit, he said: "where is the encoder?"
So I purchased an encoder for $250 USD and had it installed and
calibrated where it was originally installed.
Mmmm :-(:-(:-(
PeterS
On 27/02/2017 10:19 PM, Casey Jay Lewis wrote:
Anyone that sells an encoder for a Trig transponder is selling ice to
an Eskimo. You've been had.
iPhone Transmission
On 27 Feb 2017, at 22:37, Mark Newton <[email protected]
<mailto:[email protected]>> wrote:
On 27 Feb 2017, at 9:06 PM, Peter (PCS3) <[email protected]
<mailto:[email protected]>> wrote:
I purchased a TT21 and it did not include an altitude encoder for
Mode S: had to purchase and install it afterwards. :-(
Was not advised by the salesperson of the TT21. :-(
Huh?
It’s built-in to the TC20 display module that bolts into the
instrument panel, which comes in the box with the transponder:
https://www.trig-avionics.com/products/tt21/
TT21 gets mounted on a sliding tray behind a bulkhead or under the
panel somewhere, cabled to the TC20 in your panel, which also takes
an input from your static system.
Are you sure it was a TT21 you bought? I don’t think you can buy them
without the encoder.
(although you can configure them to use an external encoder if you
have one, hilariously enough)
- mark
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