Almost a year since analog TV died

[jr_tech]

Originally Posted by Jeffhs

Even with an external antenna that clips onto the rain gutter around the car's roof? These antennas were used quite a bit with the first battery portable TVs for mobile reception; they worked quite well in the stations' normal coverage areas, but then again all TV was analog in those days and the signals were a lot stronger.

A little extra strength can't hurt, but the problem really is related to the digital system that was selected for the US.

"ATSC is optimized for a fixed reception in the typical North American environment and uses 8VSB modulation. The ATSC transmission scheme is not robust enough against doppler shift and multipath radio interference in mobile environments, and is designed for highly directional fixed antennas."

Possibly, some modifications to the coding scheme will help.

"To overcome these issues, additional channel coding mechanisms are introduced in ATSC-M/H to protect the signal."

Quotes taken from:

http://en.wikipedia.org/wiki/ATSC-M/H

jr