[mythtv] UHF Channels

[Brian Foddy]

As I get aquainted with Mythtv .7, I started noticing the UHF channels in the 
US not working.  At first I figured it was just a bad antenna or something.

Then I tried xawtv on the same computer and it played them just fine.
Restarting mythtv, it too would play the UHF channel fine that was set
by xawtv, but trying to change the channel it would fail again.

Is this a known issue?

Brian