[pvrusb2] hvr-1950 - analog side - problems using scantv

[Roger]

> On Wed, Nov 23, 2011 at 01:50:00PM -0900, Roger wrote:
>/usr/bin/cx25840ctl
>/usr/bin/ivtv-radio
>/usr/bin/ivtv-mpegindex
>/usr/bin/ivtv-tun
>
>ie.
>
>$ ivtv-tune --freqtable=us-bcast --channel=16
>/dev/video0: 483.250 MHz
>
>
>Using either mplayer or cat on /dev/video0, I get a blip of gray static and 
>then the screen goes black.  I do have good audio so I can hear either the 
>static or the station broadcast.  Most I have here on analog TV freqs are 10-20 
>scrambled (over the air cable in Alaska here) and one standard TV channel which 
>is poor in quality.

I'm guessing the black screen is something like macrovision, when the signal 
either gets strong enough or the macrovision is just on selected scrambled 
channels.