Cambridge 302 versus new ClearNav vario?

On Tuesday, January 6, 2015 4:21:54 PM UTC-5, Alexander Müller wrote:
My opinion? Not yet!

Spring 2014, I changed from a 302 to the CNv-XC version and after a three weeks, I changed back ruefully.

My original configuration was a 302 connected with a Dell Streak 5 running XCSoar. This combination is working perfect! All possible data are transmitted (in both directions) between the two devices and the handling is like a single flight-computer with integrated vario and logger.

Because I´m flying OLC, records and competition, I have different libraries of tasks in my Dell. Shortly before take-off or sometimes in the air, I decide what´s the right task for the day and after selecting the task in my PDA, I transmit the task (including the necessary waypoints) into my two loggers (302 and LX Nano). That is a matter of 10-20 seconds and my flight display and all loggers are working with the same waypoints and task.
The waypoint- and the task handling is managed completely outside in my Dell and the loggers are only "slaves".

With the change to the CNv nothing worked as before. The CNv understands only a few 302 commands and with the wrong command from outside the CNv stops working!
All common used programs (WinPilot, XCSoar, LK8000 and CU-Mobile) working fine with the 302 -like a standard device- are now not longer working in the same way with the CNv. A real step back!

The handling of waypoints and tasks in the CNv is time-consuming and prone to errors in relation to the situation I had before with the 302. Nothing for a short decision two minutes before take-off!

Task and waypoint handling from outside (via dataport) is not possible with the ClearNav vario. The handling via USB stick and the simple task editor on the small screen of the CNv is unrealistic!

Another point: Since many years, I waited for the promised update for the 302, that all internal sensors will be used. We all know, this update will never come.
As I bought the CNv, it was my opinion, that now, 10-15 years after the 302, all this wonderful new sensors will be used to improve the quality of the new ClearNav variometer.

But they are still not in use and again I have only a promise!

And since the last promise (from June 2014 in the CNv forum), I am again waiting and waiting and waiting...

But I am a lucky guy. I still have a wonderful working 302 in my glider!

Alexander Müller

I'm not the "ClearNav expert", but some info is here... https://groups.google.com/forum/#!to...ng/MjeuQtXYJlE

Which also has a link to their discussion site.

Hope it helps some.

Charlie.