I have look for replacements, but non of the possible transistors are available, or extremely expensive. It looks like there is a shortage in production maybe due to Corona.
The 30W option was originally developed for small camping dishes, like the dish we are using for our portable club station. If you are using a normal >=80cm dish, then the 10W amp is a good choice. It gives real 8W which is enough the trigger Leila.
vy 73, Kurt, DJ0ABR