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Old 23-Mar-2013, 2:34 AM   #5
GroundUrMast
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Join Date: Oct 2010
Location: Greater Seattle Area
Posts: 4,773
I'm skeptical of any claim that suggests an amplifier can make a low performance antenna into a better performing antenna. Amplifiers do not and can not 'pull' signal from the coax, antenna or air.

An amplifier 'pushes' signal through the additional loss of cable and splitters. If the tuner has a poor noise figure, and the amplifier has a better noise figure you'll get some benefit there as well. Rather than claiming the amplifier may help the antenna, I would far prefer the ad copy suggest you might help your tuner... a little.

I've shared this analogy before, but why not again?

If you dig a hole and find some muddy water at the bottom, you might be inclined to call it a well. If you put a high pressure pump at the bottom of that 'well' the best you could hope to get at the tap would be high pressure muddy water. If you add a second pump in line... perhaps you'll get more pressure but the water is still unfit to drink. If you want drinkable water, dig the hole deep enough to reach a steady supply of clean water. Then, knowing how deep the well is, and how long the pipes are and how many gallons per minute flow is needed, a pump can be selected... but the pump is still not the source of clean, drinkable water.

The antenna and it's location is analogous to the well and it's location/depth. The amplifier is analogous to a pump. A pump without a well to draw from is not going to produce water. An amplifier connected to an antenna that does not receive a usable signal is not going to create a usable signal.

@psa64, rarely are two amplifiers needed. The high output level of the AP8700 could cause a second amplifier to overload which would leave you with less reliable reception.

Last edited by GroundUrMast; 23-Mar-2013 at 5:32 AM. Reason: sp.
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