Yes, looks like it's there.

First, try

linrad

Which may or may not work. If it doesn't work as yourself, try it as root (this isn't a good thing to do routinely, but may be necessary: it looks like the .deb was converted using alien which can do strange things to permissions).

If neither work, or generate useful error messages, try this:

su
(small s!)
(you'll be asked to enter root password -- do so)
updatedb (go and make a cup of coffee)

then

whereis linrad

(it should splurge out a list of things called linrad --- you see, it could be that it hasn't installed it anywhere sensible -- could be in your /tmp or /home directory) by trial and error (and by giving the full path, say /home/w5uc/tmp/linrad/linrad or by cding to where it is and doing ./linrad -- which, essentially, says to bash "don't bother looking in path, execute the damn thing in the present working directory") you might be able to get it going.

If you want to look for it graphically, then executables in Kde have icons which resemble gear teeth, while scripts have icons which look like TV screens. It could be either, but I'd guess it's a gear wheel.

Usually there's a man page which may be of help:

man linrad

should bring it up.