[PLUG] MythTV Testing - HDTV choppy
kingbeowulf at gmail.com
Sat Sep 21 12:28:31 PDT 2013
On 09/21/2013 01:06 AM, John Meissen wrote:
> kingbeowulf at gmail.com said:
>> 5. I built my own DTV antenna for grins:
>> I used scraps: some leftover 18 gauge Cu wire and a piece of cork flooring.
>> I get excellent 1080i reception of PDX stations from Vancouver at ground
> I'm surprised you get such good reception. That's a UHF antenna, and 3 of the
> Portland stations are VHF (8, 10 and 12).
> PLUG mailing list
> PLUG at lists.pdxlinux.org
Ah, that's the beauty of this simple design: it can pull in all PDX DTV
channels just fine. Its great that I built this with leftover scrap
building material in the garage! A spiffier design is Gray-Hoverman:
There are several other designs. One is a better fractal design that I
plan to try. Here is an example using Al foil on clear plastic:
You can increase the number of elements and the Koch curve iterations:
"Signal strength" also depends on your DTV tuner. I suspect that some
(most?) HDTV manufacturers are skimping figuring that most people just
plug into one of the HDMI jacks. Since 99% of DTV is in the UHF, I
wouldn't be surprised if some DTV tuners skip proper VHF support.
(Note: Anyone that has a high quality roof top VHF/UHF antenna from the
old analog days already has a dang good DTV antenna. The only reason I
bothered to build one is because the last TV antenna I had was 20+ years
But I digress (rainy Saturday!). Yes, this simple design is plenty good
enough in PDX. If you need more frequency response, replace the bow tie
elements with Koch fractals.
More information about the PLUG