Note that if you just amplify what's coming in via the antenna, you amplify noise signals as well. Depending on _why_ you're having trouble with reception, that may not be a net win.
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Noise could have been a problem. I have since stopped using either combination of additional in-line amps, and I am using the antenna's own amp solely. I found that with the in-line amps in place the signal strength went proportionately, as did the signal quality being reduced. More signal strength was not helping when the quality reduced left me with nothing at all. Thus, no net win, as you surmised.
Yes, I'm doing it at this very moment. The signals are no different than before just the data contained is different.Depending on your location your amp might be a bit less efficient than before since your stations may be and probably are using a different frequency than before.
Thanks for the response. I am using an antenna that claims to have about 14db of internal gain with a built-in amp that adjusts to as much as 32db additional. It is perhaps as much as the converter box can handle coming into it, since, when I add two 10db in-line amps, all signal is cut off... or maybe clamped. I have not yet tried just one 10 db amp yet. However, I figured that it would boost whatever type of signal. We'll see.
Re-design is right. I normally use satellite reception as we live in an area where we shouldn't be able to receive terrestrial digital, but I took that as a challenge and put in a high-gain aerial with an amplifier and managed a decent signal. It's better to use a masthead amp (near the aerial) rather than near the telly so you're only boosting the signal and not the noise picked up in the downlead. Also be aware it's possible to have too much gain which may happen if your set has an internal signal amplifier as well.