On Mon, 09 May 2016 08:32:58 -0700, JS wrote:

On Monday, May 9, 2016 at 8:16:44 AM UTC-7, David Kinsell wrote:
The bigger question is how well your PF is handling your Mode C
transponder? It has trouble filtering out your own transmissions, may
want to consider upgrading to Mode S for best results. I assume you
have Aggressive filtering selected, and you are receiving Mode C?

Using aggressive filtering and a Trig TT22 that's being interrogated by
Mode C. The flashing blue dot is boring.
Until checking the "use TXP altitude" box, every pull-up brought a
collision warning.
This is my second PowerFLARM used in conjunction with Mode S. The
previous installation of PF with Trig TT21 wasn't a problem. But that
might have been using better FLARM firmware?
Jim

Mode C doesn't interrogate anything, it responds to ground radar or TCAS.
With no Mode C in your ship, can't imagine Aggressive filtering would be
needed. Probably best not to use it.

-Dave