Trig TT21 transponder for sale

[Dave Springford]

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

[Dave Nadler]

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"

[Uncle Fuzzy[_2_]]

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

[Steve Koerner]

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.

[Darryl Ramm]

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

[Dave Nadler]

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"

[K]

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

[Jim[_32_]]

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?

[Dan Marotta]

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?

[Tony V]

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.php?target=productDetails&model=TT21&substring=tt21
http://www.sea-avionics.com/lc/cart.php?target=productDetails&model=TT22&substring=tt22

[Tim Mara]

this is within a very few $ of what I sell new TRIG T21's for.....with
factory warranty!
tim
Please visit the Wings & Wheels website at www.wingsandwheels.com

"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?

[Eric Greenwell[_4_]]

On 9/5/2012 2:27 PM, K wrote:
> I am interested in buying this and I am wondering, With this unit
> being a Class 2 transponder, What happens above 15,000 feet?

The same thing that happens at 15,000 feet. It will do want needs to be
done, but if you will frequently fly above 18,000' outside of a "wave
window", consider the higher power unit.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
email me)
- "Transponders in Sailplanes - Feb/2010" also ADS-B, PCAS, Flarm
http://tinyurl.com/yb3xywl

[K]

On Thursday, September 6, 2012 10:07:44 PM UTC-6, Eric Greenwell wrote:
> On 9/5/2012 2:27 PM, K wrote:
>
> > I am interested in buying this and I am wondering, With this unit
>
> > being a Class 2 transponder, What happens above 15,000 feet?
>
>
>
> The same thing that happens at 15,000 feet. It will do want needs to be
>
> done, but if you will frequently fly above 18,000' outside of a "wave
>
> window", consider the higher power unit.
>
>
>
> --
>
> Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
>
> email me)
>
> - "Transponders in Sailplanes - Feb/2010" also ADS-B, PCAS, Flarm
>
> http://tinyurl.com/yb3xywl

Eric,
Thanks for the link. I never knew SSF had its own website. I mostly fly in Northern UT and the Reno area so 15K on a good day is not unrealistic. I have no desire to fly the high altitude wave you mention. My question "What happens at 15,000" was mainly referring to what is ATC going to see on the scope. If the display on the scope (Or TCAS) tops at 15K then I may need to keep shopping. If this unit will display PA altitudes between 15 and 17K then, for the small amount of time I spend at these altitudes, this unit would probably do.
Just bought a new ship and I am in the process of setting up (Completely redoing) the panel so you guys may have to suffer through my silly questions for awhile.
Kirk

[Grider Pirate[_2_]]

On Sep 7, 8:08*am, K > wrote:
> On Thursday, September 6, 2012 10:07:44 PM UTC-6, Eric Greenwell wrote:
> > On 9/5/2012 2:27 PM, K wrote:
>
> > > I am interested in buying this and I am wondering, With this unit
>
> > > being a Class 2 transponder, What happens above 15,000 feet?
>
> > The same thing that happens at 15,000 feet. It will do want needs to be
>
> > done, but if you will frequently fly above 18,000' outside of a "wave
>
> > window", consider the higher power unit.
>
> > --
>
> > Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
>
> > email me)
>
> > - "Transponders in Sailplanes - Feb/2010" also ADS-B, PCAS, Flarm
>
> >http://tinyurl.com/yb3xywl
>
> Eric,
> Thanks for the link. I never knew SSF had its own website. I mostly fly in Northern UT and the Reno area so 15K on a good day is not unrealistic. I have no desire to fly the high altitude wave you mention. My question "What happens at 15,000" was mainly referring to what is ATC going to see on the scope. If the display on the scope (Or TCAS) tops at 15K then I may need to keep shopping. If this unit will display PA altitudes between 15 and 17K then, for the small amount of time I spend at these altitudes, this unit would probably do.
> Just bought a new ship and I am in the process of setting up (Completely redoing) the panel so you guys may have to suffer through my silly questions for awhile.
> Kirk * * *- Hide quoted text -
>
> - Show quoted text -

The TC 20 control unit is the same for both the TT21 and TT22. The
altitude encoder is part of the TC 20 control unit.

[son_of_flubber]

> > On 9/5/2012 2:27 PM, K wrote:
>What happens above 15,000 feet?

http://www.airplanegear.com/trig/tt21-22-install-manual.pdf

The installation manual has a more complete technical specification
and a careful reading may answer your question. Other than power output, much of the spec seems identical, but there may be some subtle and important differences.

[Dave Springford]

The difference between class 1 and 2 transponders is the power output. Class 1 typically around 175 Watts or lower and class 2 250 W.

The higher power of the class 2 for greater transmission distance for the high flyers.