Dish Doesn't help much -- Dish Goes where cable is and hooks to ANT.
Cox Customer Support | Cable/Digital Cable
Realize you have a Sylvania SRD3900 DVD/VCR combo player casette recorder
You may not be able to put it DVD/VCR where VCR is -- may need to be where the DVD is
What you are trying to do is have TV when watching DISH -- VIDEO when operating DVD/VCR