First of all thank you all for keeping this forum great and creative. I had use of a suitable Fathom card and junction box, and be able to fixate it to the tether reel or the transport case for the rov,reel and laptop. The box is printed in PETG and uses 2 pc standard M20 glands, and 1 pc M16 gland for the tether. The little yellow frame on the lid holds a transparent plastic film (cut from cable packaging) and makes it possible to see lights from the active card. Are making some after mount adjustments to the model files, but will share the files later if any one needs one to.