[mythtv-users] Using Two DTAs with One PVR-500

[Brian Wood]

On Tuesday 19 January 2010 05:26:52 pm Kirk Bocek wrote:
> The short answer:
> Use a channel 4 signal combiner.
> 
> The long answer:
> 
> As part of Comcast's analog shutdown/ClearQAM Encryption process I'm
>  getting a couple of their DTAs hooked into my MythTV setup. Comcast gave
>  me Motorola DTA100s but this would apply to the seemingly more common Pace
>  DC50X DTAs as well.
> 
> These DTAs offer *only* a single RF/Coaxial output with a channel 3/4
> selector. The problem is that my ancient PVR-500, while having two internal
> tuners, has only a *single* physical RF/Coaxial input.

You're saying the boxes have *only* RF outputs, no baseband (Composite or S-
Video) outputs? Could you get boxes with baseband outputs, but pay more?

This would mean your TV set would have to have an analog tuner, in spite of 
recent FCC rules?

The original reason for the channel 3/4 output, was the theory that one of 
them would be unused in a given market/ The boxes probably have very crappy 
vestigial sideband filters (because good ones are expensive), and thus throw 
crap out of band.