Here are a few photos of my installation in my Boler
is hooked up to back of radio.It is made of rubber compound.I just place it in cabinet behind Radio , standing up.Radio waves go through fiberglass so no need to put holes into RV.
This idea I got from some young fellow (PHILL)on this site, so I can't take the credit.
The radio is AM FM with a tape deck.I paid 30.00 CDN for it brand new.I have a cd player with adaptor , so I can go both ways.Hope this helps
The speakers were 20.00 Cdn New.They just screw/bolt up to underside of cabinet.