Here is a list of models from Flexradio Systems where you find pictures.

6300 atu 6 pictures

flex-1500 7 pictures

flex-5000 3 pictures

flex-6400 1 picture

sdr-1000 2 pictures

6300 atu 1 picture

Have you a picture that not is shown on mods.dk and you like to share this with others, then upload the picture to mods.dk.