VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

  #1  
Old 12-02-2017, 12:09 PM
gerrychuck gerrychuck is offline
 
Join Date: Jun 2011
Location: Moose Jaw, SK, Canada
Posts: 526
Default Need TSO'd Xponder?

I currently have an Ameriking AK-350 encoder feeding my ol' Kt 76a transponder. At certain altitudes it doesn't show up on radar, but move up or down 50 ft and it shows up again. My avionics guy tested the system and found both the encoder and transponder are working fine, and determined that the problem lies in the wiring between the two.

So...I am currently in a prolonged process of getting a used GRT HX efis into my 6a. Initially my plan was to use the encoder in the HX if I was going to have to replace wiring anyway. Talking to Steinair about getting wiring harnesses build for the whole thing, they informed me that the serial output of the HX and the Gray code input capability of the KT 76a wouldn't play together, so I had them price a new wiring harness for the original encoder/xponder setup. Since then, I found out the GRT will happily sell me a serial to Gray code converter, and Stein confirms they can wire that into a harness to connect the HX and the old transponder.

Before I pull the trigger, though, I thought I should tap the collective expertise here; I seem to recall seeing somewhere that we need to use TSO'd transponders and encoders in Canada, even in our amateur builts. If so, that would rule out using the encoder in the HX. Anyone have any information or experience on this? Thanks in advance, as always.
__________________
Gerry Julian
Moose Jaw Saskatchewan
RV6A "Second Wind" C-GERZ (born N242UL)
O-360 A1A, Sensenich FP prop

Those who think any system is foolproof greatly underestimate the ingenuity of fools
Reply With Quote
  #2  
Old 12-02-2017, 01:03 PM
Canadian_JOY Canadian_JOY is offline
 
Join Date: Aug 2007
Location: Ontario, Canada
Posts: 1,777
Default

I use the Dynon D100 and its serial-to-grey code converter in our flying airplane.

No hard and fast rule about TSO'd encoder - just needs to meet TSO requirements vis a vis altitude output. Lots of folks are using their EFIS devices as their encoder.

BTW I went with a Trig TT22 and TC20 control head for 2020 ADSB compliance. The TC20 control head for the transponder is also the encoder, so met the requirements quite easily and with minimal space required.
Reply With Quote
  #3  
Old 12-02-2017, 01:04 PM
gerrychuck gerrychuck is offline
 
Join Date: Jun 2011
Location: Moose Jaw, SK, Canada
Posts: 526
Default

Quote:
Originally Posted by Canadian_JOY View Post
I use the Dynon D100 and its serial-to-grey code converter in our flying airplane.

No hard and fast rule about TSO'd encoder - just needs to meet TSO requirements vis a vis altitude output. Lots of folks are using their EFIS devices as their encoder.

BTW I went with a Trig TT22 and TC20 control head for 2020 ADSB compliance. The TC20 control head for the transponder is also the encoder, so met the requirements quite easily and with minimal space required.

Perfect. Thanks!
__________________
Gerry Julian
Moose Jaw Saskatchewan
RV6A "Second Wind" C-GERZ (born N242UL)
O-360 A1A, Sensenich FP prop

Those who think any system is foolproof greatly underestimate the ingenuity of fools
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 12:29 PM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.