Maximum DB gain for tv uhf amplifier ?

Just wondering what is the best amplifier for db gain for uhf
receptikon.
Bought a radio sack 10db and it didnt do a thing.

Thanks

Ed

 

I would sayit did.

 

Maybe the amp didn't have a decent signal to amplify to begin with.

 

If it was already a "good" signal, what do you expect to obtain by increasing
it's amplitude?

Don

 

The main purpose for the type of amplifier that Radio Shack sells is to
overcome line losses (which is rarely how they're used, which is why they're
usually not too helpful). You want to put the amp at the "antenna end" of a
long line, where the signal is presumably strong and clean, so that it's not
too weak when it reaches the receiver. If you start with a weak, noisy
signal, an amplifier will just it make a strong noisy signal.

 

So if a picture is snowy a UHF amplifier will do nothing ?

 

It depends why the picture is snowy. If the antenna isn't getting a good
signal, an amplifier won't help, no matter what. If the antenna is getting a
decent signal, but it's getting lost in the cable, you can put the amplifier
between the antenna and the cable. It might help. If you put it between the
cable and the TV, it probably won't help.

 

So if a picture is snowy a UHF amplifier will do nothing ?

I see no flaws in what Karl has said,
but he hasn't yet explicitly said *Position the antenna better*.
Despite being a zero-cost solution,
it's amazing how many folks overlook this.
Sometimes moving the antenna a few feet vertically or horizontally
makes a huge difference.
It's often just as easy to locate it at the other end of the building
--and with exceptional results reception-wise.

Before erecting an antenna on a property,
a pro would take a survey of field strength on that property.

 

Is more height always better ?

 

jeffm posted:

<<

I see no flaws in what Karl has said,
but he hasn't yet explicitly said *Position the antenna better*.
Despite being a zero-cost solution,
it's amazing how many folks overlook this.
Sometimes moving the antenna a few feet vertically or horizontally
makes a huge difference.
It's often just as easy to locate it at the other end of the building
--and with exceptional results reception-wise.
----------

Yes, but the OP did NOT ask how to improve the signal, which has a multitude of
possible answers; he asked specifically about the UHF amp.

One problem with newsboards is the propensity of many people to do a friggin
brain dump in answer to a simple, straight-forward question. If an OP has more
extensive questions, let them ask it. Keeps topics ON-topic.

Don

 

Position the antenna better.

Not always. Optimal alignment with the incoming signal is the goal.