On Tuesday, September 11, 2012 4:19:30 PM UTC-4, Andy wrote:
I received a Butterfly external display with my US PowerFLARM core (brick). I also ordered a PowerFLARM Portable so have been able to compare the two.



The alerter volume of my Butterfly external display is much lower than the alerter volume on my portable, even when the Butterfly is a maximum and the portable is at reduced level.



My Butterfly external display also has light leaks along the entire top and bottom edges. These show up as light bars that are significantly brigher than the display itself. The portable display has no visible light leaks.



I contacted Butterfly and asked for comment as I did not wish to approach my dealer until I know whether these characteristics were typical of all production displays.



Butterfly declined to answer my questions and forwarded my enquiry to Lee Kuhlke of FLARM USA. It seems that Butterfly is taking no responsibility for displays that were exported to USA. Lee has so far declined to provide any answer.



So, if you have a Butterfly external display, will you please let me it it has light leaks, and also if the alerter volume is similar to, or significantly lower than, the portable.



Photos of the light leaks available by email.



thanks,



Andy.

I have been flying with my PF Brick, Butterfly external rectangular display and connected ClearNav for my last 5 flights. My observations are that:
1) the Butterfly external rectangular display audio alerts are very good for PF-to-PF conflicts but extremely deficient in transponder alerts.
2) If my display has "light leaks" I haven't noticed them so not a problem for me. I'll have to check for you next time I take my glider out of the box.