![four hams on the back of a truck putting up a big antenna](http://n2re.org/wp-content/uploads/2021/11/FB1989-small-712x1024.jpg)
![two men on the top of a truck](http://n2re.org/wp-content/uploads/2021/11/FD-1989-Upper.jpg)
![two men, one holding the mast of an antenna, the other tuning a radio (seated)](http://n2re.org/wp-content/uploads/2021/11/FD-1989-lower.jpg)
June 24, 1989, I’m thinking this is the David Sarnoff Radio Club Field Day, using the old RCA Labs van as an antenna stabilizer and also emergency shack. -Charlie
(EDIT, this seems to be RCA Astro’s Field Day event… with several Sarnoff folks helping out)