Hello,

I've been using the 757 III for around a year now. I fly online and after some initial googling just presumed the XPNDR didn't work with online flying clients. By chance, I stumbled across the changelog the other day and noticed that it should indeed work.......

VERSION 1.5 (16DEC’19)
Products: Entire 757 family for P3D4 and FSX.
New features:
– TA/RA mode C activation for flying online added. FSUIPC required.

I am using v1.7 Base + RR expansion and I have a registered copy of FSUIPC but the 757 XPNDR has never interacted with the pilot client (vPilot). Is there something I need to do to get this to work? The 757 packages were installed as per CS instructions and everything else works as it should.

Thank you

I should add that TCAS TA/RA all work fine with regards to online traffic.

goesto11 wrote on Jan 9^th, 2022 at 6:57pm:

I should add that TCAS TA/RA all work fine with regards to online traffic.

I can confirm that mode C works for vatsim, specifically v-pilot and squawkbox. I use them often.

Thanks for the reply, Alex.

I've re-read my question this morning and I've not actually explained what I'm trying to say very well!

The problem is when I move the knob on the transponder from standby into mode C etc in the sim, it doesn't change the setting on the pilot client. When it is is mode C TA/RA I can see online traffic on the map and get TA/RA if in a conflict situation, so there is definitely some interaction going on.

In terms of functionality with regards to being able to dial in the squawk code and ATC seeing it, there is no problem.

Hope that makes it a little clearer.

goesto11 wrote on Jan 10^th, 2022 at 8:29am:

Thanks for the reply, Alex. I've re-read my question this morning and I've not actually explained what I'm trying to say very well! The problem is when I move the knob on the transponder from standby into mode C etc in the sim, it doesn't change the setting on the pilot client. When it is is mode C TA/RA I can see online traffic on the map and get TA/RA if in a conflict situation, so there is definitely some interaction going on. In terms of functionality with regards to being able to dial in the squawk code and ATC seeing it, there is no problem. Hope that makes it a little clearer.

Yes! This is what I was meaning as well. mode-c is enabled on vpilot as soon as on the CS 757/767 you select your transponder to anything other than STBY.