could veryone coming up to W4ZST for the contest bring a laser pointer?
I have an experiment I'd like to try.
also, please make sure you have the intercom app on your smartphone...
Intercom for Android is the app 

https://play.google.com/store/apps/details?id=com.androidintercom

iphone search for infinite intercom... (by infinite buffer)

(same app as before...)

thanks!!