Quote Originally Posted by marktrav View Post
Last year, while practicing formation in preparation for Bonanzas to Oshkosh, I found out that turning an ads-b transponder to standby does not silence it in foreflight, and I assume other ads-b monitoring facilities. My wingman had his transponder on standby, and I was reporting to ATC as a flight of two and they never mentioned anything. However, I could still see him on foreflight and was constantly getting the "omg you are going to die because you have an aircraft within 100 feet of your positions" messages. Once he pulled the breaker to the transponder, he finally "went away".
Interesting. What do you have for a Transponder and ADS-B?

ted