I have a question: according to gwhat I've been reading in the book Secret Journey To Planet Serpo there was an open communication line between Earth and Serpo. It was used to agree on time and place of at least two meetings; to pick up the dead Ebens en to bring an Ebe en pick up the twelve men/women (?) from Earth.

In the book Secret Journey To Planet Serpo, I didn't find anything about the use of the posibility to continuously communicate with each other, from the time on the 12 men travelled to Serpo.
I mean, they were in contact with each other, they did send each other messages with the help of the Ebe and later on by themselfs before the twelve men left, but they didn't while the twelve men were gone or after arriving?
That's odd, isn't it? Or did I miss something and there wás communication between the two parties the whole time?