Hello,
Startux and the CCAS app (thanks for this great app!) both have their advantages.
Does a dual-band connection to VFRnav work if you are connected to the Stratux via Wi‑Fi and are simultaneously running the CCAS app? I’m thinking, for example, of redundancy and barometric altitude which (if fitted) could be queried by the Stratux.
Thanks. Best regards.
Jan
Hello Jan,
yes.
You need internet ( mobile data) on the device ( tablet/phone) for CCAS. As far as I know, a BMP280 from VFRnav is still not being queried. Switching the altitude display to Baro queries a baro sensor in the phone. ( if present)
Happy flying,
Karsten
Hello, thanks for your reply.
I hope that the barometric altitude can soon be queried and used by the Stratux. That would be really great.
Regards, Jan
Hello Jan,
as far as I know it’s on the to-do list. @Hermann?
Note: My extensive experiments with the Stratux have shown that the installation position in the Stratux is significant for the readings. I also installed a BMP280 in a T-Beam. Above the sensor chip I drilled many 0.8 mm holes to improve the capture of sensor readings. I haven’t yet found a solution I’m very satisfied with.
Aviator greetings,
Karsten
Hello VFRnav community!
I am new to the forum and today heard about ccas for the first time — and that’s despite having used VFRnav for many years. So far with Safesky and Stratux.
One question the forum hasn’t yet answered for me, and this post seems to have originally aimed at that question.
My previous configuration (see above) using the free version of Safesky always ran in parallel:
VFRnav with UDP4000 from the Stratux
and
Safesky standalone
So every few minutes I would glance over at Safesky and then back to VFRnav. First of all, big thanks to Hermann for the free integration of ccas into VFRnav.
Please don’t take the last sentence as criticism,
Best regards, Stephan (P92 D-MLDS)
Hello Stephan,
Regarding 1. → yes
Regarding 2. → ? …since different IDs, I ‘suspect’ it’s duplicated.
Regarding 3.
Do you know
…or have you already tapped the CCAS symbol to obtain information?
Whether other products use the same sources as CCAS would have to be researched for them.
Pilot greetings,
Karsten
I’ll get on it and try it.
What I noticed on the ground at home on the sofa is that some targets were immediately visible in safesky and not in ccas, but then suddenly after some time still popped up…?!
Hello everyone,
CCAS can be linked to on-board collision systems (e.g. FLARM or Stratux) via the menu item “External Connection”. This feature is currently still in the testing phase — I therefore welcome your feedback!
Traffic data from FLARM, AT-1, Stratux or other systems are merged with data from the CCAS network and then forwarded to VFRnav.
Does ccas use the same sources as safesky?
CCAS uses the same data. At the same time, we’re currently building an expanded MLAT network. 
Hi Hermann,
By the way: someone also asked how duplicate records (identifiers) are handled — would they then be displayed twice? …
In Stratux I can merge known IDs and/or registrations.
Example: on my Stratux units I’ve so far done it so that the T-Beam receives the same hex ID as the Mode S transponder. Otherwise an aircraft (LFZ) would appear twice (and offset). → you can occasionally see this with some planes. (not nice) In the above configuration the aircraft clearly transmits with ADSBOUT/ModeS and “Flarm”/OGN on 868.
MLAT → very good
Note: I’ve also configured an MLAT client on my Stratux units. In the air that only works if mobile internet is available. (so it’s just a gimmick) but it does work.
Pilot greetings,
Karsten
Hello Karsten,
yes, I have that on my list.
At the moment it’s as you summarized: when several systems are on board that send or transmit aircraft data, e.g. transponder and Flarm, your aircraft ends up with two internal identifications, which are shown to other participants in the CCAS network as two aircraft.
Ideally this would be automatic detection. That’s my expectation.
Until this is implemented, tested and really works flawlessly, there will be two contacts visible on the map. That’s not pretty — but definitely better than experiments that make it not visible 
Blue skies
Hermann
…how could it have been any different so far.
Good evening, Hermann,
Many thanks for the explanation of my words.
Let’s take it easy — as always, something good will come of it at VFRnav.
Thanks
Pilot greetings,
Karaten
