Quote:
Originally Posted by teleview
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As to the antenna gain and the amplifier gain adding to the antenna gain.
Pay close attention to the wording of the statement.
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OK, not trying to be dense...maybe it's just a wording thing. I just don't quite get it. I've read through a bunch of pages and searches and just don't seem to be grasping this concept I guess.
So the names... preamp...amp...booster...just for marketing proposes?
If it doesn't boost db then what is it "amplifying"? Why the claims of 15 db gain?
Lets try this...
Here's a hypothetical. I have -3.8 db at the antenna. Then my antenna adds 9.4 db of gain. So I should have a signal of 5.6 db at the antenna leads. Right?
So then if the preamp / amp doesn't add 15 db to that signal it's only purpose is to basically hold that 5.6 db signal steady? To compensate for line/splitter loss? As long as there isn't more than 15 db of total loss through the run from the antenna to the TV? (IE...splitters, line length etc.)
And the preamp also adds noise of 1.8 db so I need to subtract that from the 5.6 db for a grand total +3.8db at the TV?
In other words what I get at the antenna for a signal will never get any better no matter what I do? There is no way of making that signal any stronger to my TV?
If this is true then is it just not really reasonable / possible for any one with -dbs for initial readings to receive OTA tv? If not then why bother showing a chart that goes into the -30 dbs or more? What do people do in those situations? Is it just there for show?
Not trying to be difficult. Just trying to understand.
Thanks