On Tuesday, March 19, 2019 at 7:18:33 PM UTC-4, Darryl Ramm wrote:
On Tuesday, March 19, 2019 at 4:05:58 PM UTC-7, kinsell wrote:
On 3/19/19 4:50 PM, wrote:
On Tuesday, March 19, 2019 at 4:54:40 PM UTC-4, wrote:
For those towing behind tow planes equipped with ADS-B out (1090MHz), a new version of PowerFlarm firmware 6.67 is now available which should suppress the collision warning from the tow plane's ADS-B out. Below are release notes.


What about those tow planes equipped with ADS-B out using UAT (978MHz)?


PF doesn't receive 978 MHz, so there shouldn't be alarms generated.

Jeez is there anybody who has not been paying attention who actually has equipped a tow plane with UAT Out?

skyBeacon is a pretty darn inexpensive and easy to implement way to make a tow plane 2020 compliant. I wouldn't be surprised if a significant number of people don't go that route, even though it is UAT instead of 1090ES.

A big question is exactly how FLARM has suppressed the tow plane ADS-B alarms. Does FLARM recognize the fact that the tow plane and glider are in formation, and only suppress the alarm while the formation flight continues, or does it somehow completely suppress all alarms for the tow plane? You definitely would want to see tow plane alarms after the glider releases from the tow in the event that you accidentally get on a collision course with the tow plane after the completion of the tow.