Having had both the HDHR-2 and the HDHR4-2, the HDHR4-2 does a significantly better job with less breakup on the same signal.
The power supplies that came with the HDHR-2 will fail after a few years.
I have retired my HDHR-2s because I don't need 10 tuners distributed across 3 antennas, and MythTV no longer supports the two separate inputs of the HDHR-2 It assumes that all tuners in an HDHR box are all connected to the same signal.
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