[mythtv-users] Serial-USB control of Directv H20

Brad DerManouelian myth at dermanouelian.com
Mon Dec 1 14:27:06 UTC 2008

On Dec 1, 2008, at 3:57 AM, Josh wrote:

> On Wed, Nov 26, 2008 at 4:30 PM, Dave Badia <dbadia at gmail.com> wrote:
> I have an H20 I've been controlling via Serial->USB for 11 months
> straight with no problems at all....
> Flaky indeed :)  Yes, at one point (a few years ago), this was  
> working reliably with the H20.  A few weeks ago, I got a replacement  
> H20 from DirecTV, but when I hooked it up I had the exact same  
> issues as I mentioned above.
> I then had other issues with my new H20 (some HD channels would come  
> in even though signal strength was good), so a tech came out to my  
> house.  He said the only thing he had in his truck was a H23-600, so  
> we hooked that up.  The H23-600 has been working just fine for about  
> 5 days now without issue.  Same PC, same cable, same everything
> Why the multiple H20s units wouldn't work for more than a few hours  
> still remains a mystery
> Thanks for the suggestions
> Dave
> Hey Dave, I got a H23-600 but can't get anything to work.. just keep  
> getting timeout errors. What is your cable setup from the H23 to the  
> computer?

Not the original poster but I have been doing the DirecTV serial  
channel change thing for a while now.


However, I've had a problem finding the adaptors with the pl2303  
chips. They all seem to be pl2303X and the others are "long gone"  
according to all the manufacturers I spoke to. Luckily I had 2 pl2303  
adaptors from a couple of years ago but still have a third box that I  
can't change the channel on because the new adaptors don't work.

By the way, I've got 3 H21's and no issues except rebooting every  
couple of months or so when they send down firmware updates which  
annoys me.


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