Message posted by jklier on March 13, 2021 at 7:40:18 PST:

As I recall this one was HBAL499 which is one of the callsigns the Loon Balloons had been using.

In Reply to: Re: high altitude balloons posted by Joerg (Webmaster) on March 12, 2021 at 20:45:08 PST:

Replies:

• Re: high altitude balloons Duke 03/13/2021, 8:32:27 PST (3)
  • Re: high altitude balloons Joerg (Webmaster) 03/13/2021, 13:48:32 PST (0)
  • Re: high altitude balloons jklier 03/13/2021, 9:08:48 PST (1)
    • Re: high altitude balloons Duke 03/13/2021, 10:43:59 PST (0)