[mythtv-users] Stepper Directed HDTV Antenna

[Raymond Wagner]

On 2/9/2011 08:55, Dave Badia wrote:
>>> Erik Hovland wrote:
>>>> http://hackaday.com/2011/01/26/stepper-directed-hdtv-antenna/
>>>>
>>>> The last sentence in the paragraph throws down the gauntlet:
>>>> What we would like to see is this antenna attached to a HTPC,
>>>> and some kind of script to automatically direct the antenna
>>>> for the best possible signal for the current channel.
>>> I couldn't quite make out what they are doing here. Are they a) moving the
>>> antenna to use different transmitters for different channels, or b) moving
>>> it about to get the best signal from a specific transmitter.
>> This is for the former.  You have stations in multiple directions, and you
>> want to record off all of them.  This cannot be done reliably without
>> altering the code.  You would need the backend to support channel changing
>> scripts for digital tuners, to get the rotor in place before trying to tune.
>>   You probably could do something with the system event scripts, having
>> mythbackend call a script on recording start, but you're likely to run into
>> timing issues.
> Isn't this possible given Myth's current ability to invoke a channel
> change script before recording a channel?  My experience has been that
> myth calls the script, waits however long it takes to complete, then
> starts recording.

External channel change scripts are not usable for digital tuners.