# Inexpensive ADSB-Out for aircraft without transponder

Discussion in 'Instruments / Avionics / Electrical System' started by 12notes, Mar 8, 2019.

1. Mar 8, 2019

### 12notes

#### Well-Known MemberLifetime Supporter

Joined:
Aug 27, 2014
Messages:
852
Likes Received:
525
Location:
Louisville, KY
There's been quite a few discussions about ADSB-Out solutions for those planes which already have a transponder and/or WAAS GPS source. But for those of us with a new build or an already built plane but no transponder, adding the transponder doubles the price of the ADSB-Out if buying new. So what's the cheapest solution?

I'm hoping that this post will be updated as new equipment becomes available.

4. Mar 8, 2019

### Daleandee

#### Well-Known Member

Joined:
Sep 11, 2015
Messages:
902
Likes Received:
564
Location:
SC
That Trig kit includes a new Trig TT22 compact transponder. I was given a GTX 320A transponder and encoder by a friend so I'm considering a tail beacon:

https://uavionix.com/products/tailbeacon/

Used transponders on Barnstormers and eBay can be found pretty reasonable.

Another package deal that I considered before being "gifted" a transponder is this one from Sarasota:

https://sarasotaavionics.com/avionics/gdl82-gtx327-package

I did contact them to ask about the encoder for this set up as it's not shown as part of the system and was informed that it wasn't needed ... which don't sound right to me.

It is a little cheaper than the Trig but the GTX-327 transponder isn't new. It also seems the install of this setup would be a good deal more work ...

Dale
N319WF