K
kenglish
Guest
I really have to wonder.....
If every DTV station upped their power by 400%, would most people drop their antenna's capability by the same amount?
Most folks assume that, if they are getting a picture right now, then everything is hunky-dory.
It's all about "margin". What works in clear weather and ideal conditions may not work tonight, tomorrow, when it rains, or in a different season. You need 15 dB or so above noise to decode the data. You need additional "margin" to compensate for daily and seasonal variations, and weather conditions. These are all normal variations in tropospheric communications.
If every DTV station upped their power by 400%, would most people drop their antenna's capability by the same amount?
Most folks assume that, if they are getting a picture right now, then everything is hunky-dory.
It's all about "margin". What works in clear weather and ideal conditions may not work tonight, tomorrow, when it rains, or in a different season. You need 15 dB or so above noise to decode the data. You need additional "margin" to compensate for daily and seasonal variations, and weather conditions. These are all normal variations in tropospheric communications.