The foam dampers are attached to a separate mouse line, NOT to the VHF cable or any other cable.
The idea is that when you need to run a new cable up inside the mast, you:
1. Tie a new "plain" mouse line to the bottom of the "foam damper" mouse line
2. Pull the "foam damper" mouse line out the top of the mast
3. Pull the new cable(s) in the now clear cable chase
4. Pull the "foam damper" mouse line back in
SM #440 Cara
Deale, MD USA