I've read that 3 companies make H10s...
I got the following info from another board so I can't vouch for its accuracy.
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Samsung, RCA and Philips are contracted to make the H10, DIRECTV will place orders with one or more manufacturer.
No matter who manufacturers the H10 they will all be made to the same specifications.
I believe, the H10-100 is RCA Samsung is H10-200 and Philips is H10-300
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