[mythtv-users] Coax splitters - how painful are they?

Jay R. Ashworth jra at baylink.com
Sat Sep 29 03:00:11 UTC 2007

On Fri, Sep 28, 2007 at 09:10:08PM +0000, R. G. Newbury wrote:
> Well I DO NOT FEAR a visit from the FAA....it would be the DoT up here 

Transport Canada, no?

> Seriously, I want to combine a cable feed and an antenna through 
> combiner, and feed one coax to the TV. Either feed alone is fine and I 
> can switch them, but through a (cheap) combiner I get nothing watchable.

Correct: you're going to get collisions.

> Both signals have already been split: the cable coax to feed the 
> mythbox, and the antenna has already been boosted (by a medium-cheap) 
> amp, and split three ways, 2 of which feed the HDHR unit,
> This may not be the best setup.. I do not know. I do suspect that I need 
> better splitters than the el-cheapo's I had in the bottom of a box of junk.
> Suggestions please.

It's next to impossible to combine multiple wideband RF sources;
you need a block converter to pull it off, and a lot of luck..
Cable companies do it by pulling every channel down to baseband and
then remodulate it to the channel you want it on, and feed it to a
directional combiner tree.

I'm thinking multiple tuner cards; why not?

-- jra
Jay R. Ashworth                   Baylink                      jra at baylink.com
Designer                     The Things I Think                       RFC 2100
Ashworth & Associates     http://baylink.pitas.com                     '87 e24
St Petersburg FL USA      http://photo.imageinc.us             +1 727 647 1274

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