Lorna,
The cards that are in the receivers are similar in that they must be in the receiver in order for the receiver to be used. The receivers in both the home and MH have different color cards (yellow,blue, and red) but if you take the card out the receiver will not work. If the boxes have been opened I would call the dish provider and make sure that there is no balance owed on the card accounts as the accounts must be paid up prior to activating any new service. I hope this answers your question.
Derek
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