Is working in the field of satellite dishes impermissible (haram) or permissible (halal)?

Working with satellites depends on their use. If their use is purely for unlawful purposes, or if they are used for both lawful and unlawful purposes and it is certain that the user will employ them for unlawful ends, then it is not permissible to work with them, similar to selling grapes to someone who will turn them into wine. However, if it becomes clear that the device will be used for beneficial and permissible purposes, then there is no objection to working with it.