Trig TT21 transponder for sale

Trig TT21 $2050

New in box

The TT21 system is the smallest, lightest, Mode S general aviation transponder. This two part system, includes an integrated altitude encoder.
A small control unit mounts in a 57 mm hole in the panel and the rest of the unit can be mounted anywhere.

contact dave at foxonecorp.com

On Sunday, September 2, 2012 10:22:36 PM UTC-4, Dave Springford wrote:
Trig TT21 $2050



New in box



The TT21 system is the smallest, lightest, Mode S general aviation transponder. This two part system, includes an integrated altitude encoder.

A small control unit mounts in a 57 mm hole in the panel and the rest of the unit can be mounted anywhere.



contact dave at foxonecorp.com

Hi Dave - Hope you are recovering OK from Uvalde.
How come you are selling the Trig ?
Its the best available that I know...
See ya, Dave "YO electric"

Dave, I checked with the other owners and they want to upgrade the transceiver and flight computer before adding a transponder. One pointed out that with the current flight computer (Borgelt B100) and the old Terra radio, we can't even get an eight hour flight in without draining the TWO 12 amp hour batteries.
Much as I want the transponder (we fly from Jean, very near McCarren Intl, which is a very busy airport!) I have to admit it makes sense to get some lower draw equipment first.
Sorry,

Jim


On Sunday, September 2, 2012 7:22:36 PM UTC-7, Dave Springford wrote:
Trig TT21 $2050



New in box



The TT21 system is the smallest, lightest, Mode S general aviation transponder. This two part system, includes an integrated altitude encoder.

A small control unit mounts in a 57 mm hole in the panel and the rest of the unit can be mounted anywhere.



contact dave at foxonecorp.com

The TT21 is very low drain at only 125mA. You can read my original post describing my test at:

https://groups.google.com/forum/?hl=en&fromgroups#!searchin/rec.aviation.soaring/tt21$20battery$20drain/rec.aviation.soaring/KS5ANH41SOo/23HPf6ruNvYJ

or if that's scrambled up, just search RAS on TT21 battery drain.

On Tuesday, September 4, 2012 7:31:45 PM UTC-7, Uncle Fuzzy wrote:
Dave, I checked with the other owners and they want to upgrade the transceiver and flight computer before adding a transponder. One pointed out that with the current flight computer (Borgelt B100) and the old Terra radio, we can't even get an eight hour flight in without draining the TWO 12 amp hour batteries.

Much as I want the transponder (we fly from Jean, very near McCarren Intl, which is a very busy airport!) I have to admit it makes sense to get some lower draw equipment first.

Sorry,



Jim





On Sunday, September 2, 2012 7:22:36 PM UTC-7, Dave Springford wrote:

Trig TT21 $2050







New in box







The TT21 system is the smallest, lightest, Mode S general aviation transponder. This two part system, includes an integrated altitude encoder.



A small control unit mounts in a 57 mm hole in the panel and the rest of the unit can be mounted anywhere.







contact dave at foxonecorp.com

I'd be heaving that Terra boat anchor as far as I could throw it. Becker and Trig have nice new radios...

Seems strange to throw out what may be one of the lower current draw devices. I'd be sticking a multimeter in there and measuring the actual current draw. When was the last time both batteries were discharge tested? High temps while charging especially can kill VRLA batteries... just thinking where you guys are located.

Sad if the sale of the transponder needs to fund a new radio.

Darryl

On Tuesday, September 4, 2012 10:31:45 PM UTC-4, Uncle Fuzzy wrote:
...with the current flight computer (Borgelt B100) and the
old Terra radio, we can't even get an eight hour flight in
without draining the TWO 12 amp hour batteries.

Hint: the problem is not the B100 ;-)
Unless you still have the original GPS engine and don't
use it in "GPS powersaver" mode...
Yikes, I designed that in ~1989-1990 !

See ya, Dave "YO electric"

On Sunday, September 2, 2012 8:22:36 PM UTC-6, Dave Springford wrote:
Trig TT21 $2050



New in box



The TT21 system is the smallest, lightest, Mode S general aviation transponder. This two part system, includes an integrated altitude encoder.

A small control unit mounts in a 57 mm hole in the panel and the rest of the unit can be mounted anywhere.



contact dave at foxonecorp.com

I am interested in buying this and I am wondering, With this unit being a Class 2 transponder, What happens above 15,000 feet? I fly in places where the good days occasionally allow for climbs and some cruising above this. Thanks

On Wednesday, September 5, 2012 5:27:09 PM UTC-4, K wrote:
On Sunday, September 2, 2012 8:22:36 PM UTC-6, Dave Springford wrote:

Trig TT21 $2050







New in box







The TT21 system is the smallest, lightest, Mode S general aviation transponder. This two part system, includes an integrated altitude encoder.



A small control unit mounts in a 57 mm hole in the panel and the rest of the unit can be mounted anywhere.







contact dave at foxonecorp.com



I am interested in buying this and I am wondering, With this unit being a Class 2 transponder, What happens above 15,000 feet? I fly in places where the good days occasionally allow for climbs and some cruising above this. Thanks

Over 15000 you would want the Trig22. The Trig21 is only certified to 15K. Of course, who would know?

The TT22 doesn't cost that much more than the TT21. I have a '22 in my
glider and am very happy with it.


"Jim" wrote in message
...
On Wednesday, September 5, 2012 5:27:09 PM UTC-4, K wrote:
On Sunday, September 2, 2012 8:22:36 PM UTC-6, Dave Springford wrote:

Trig TT21 $2050







New in box







The TT21 system is the smallest, lightest, Mode S general aviation
transponder. This two part system, includes an integrated altitude
encoder.



A small control unit mounts in a 57 mm hole in the panel and the rest
of the unit can be mounted anywhere.







contact dave at foxonecorp.com



I am interested in buying this and I am wondering, With this unit being a
Class 2 transponder, What happens above 15,000 feet? I fly in places
where the good days occasionally allow for climbs and some cruising above
this. Thanks

Over 15000 you would want the Trig22. The Trig21 is only certified to 15K.
Of course, who would know?

On 9/5/2012 8:03 PM, Dan Marotta wrote:
The TT22 doesn't cost that much more than the TT21.

I didn't think that the cost difference was the deciding factor here....
power consumption was. However, looking at the specs, there's not a
whole lot of difference.

TT21 - Idle: 0.15 A; Active 0.28 A
TT22 - idle: 0.15 A, active: 0.34 A.

Both sets of numbers are at 14VDC - so, 3.9 vs 4.8 Watts when
interrogated - which is (hopefully) a fraction of the total time.

Tony "6N"

Source:
http://www.sea-avionics.com/lc/cart....bstrin g=tt21
http://www.sea-avionics.com/lc/cart....bstrin g=tt22