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post #1 of 7 Old 01-11-2019, 02:24 PM - Thread Starter
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Why does my un-amplified antenna work better than my amplified antenna on my receiver

and vice versa for my TV?
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post #2 of 7 Old 01-11-2019, 02:40 PM
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A lot of amplified antennas are snake oil. It could be the position of your local transmitters relative to your home and the position of your antenna in the home. Not sure where you are located but I listed a few sources than may help you with your query. Hopefully they are some help.

http://antennaweb.org

http://www.disablemycable.com/blog/...tennas-better/

http://worldradiomap.com/map/north-america
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post #3 of 7 Old 01-11-2019, 02:43 PM - Thread Starter
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But if the antenna were snake oil, wouldn't I get the same results for my TV. Why is it inversed?
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post #4 of 7 Old 01-11-2019, 02:45 PM
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An amplified antenna has an RF amplifier, but generates a higher background noise floor..
And if the incoming signal is quite weak in strength than the noise floor can be higher than the incoming signal..

Just my $0.02...
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post #5 of 7 Old 01-11-2019, 03:56 PM
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Don't know. I have a hill issue. I tried a few indoor amplified antennas over the years to get a tolerable FM radio signal, but nothing worked better than the cheap split twin-lead antenna that is supplied with most receivers. Which was inadequate.

It's not a spectrum issue, because the FM band lies in the gap between VHF channels 6 and 7.

I eventually gave up. I now use Internet Radio on my Denon AVR. (It's via Intune, unfortunately. That's an unwanted intermediate. I'd prefer that the AVR directly accessed the web sites.)
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post #6 of 7 Old 01-12-2019, 02:11 AM
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there is a quote from Heinrich Hertz (Hz) himself: "the best HF amplifier is the antenna itself"!
every amplifier (should) amplify the desired signal but amplifies the noise and distortions as well and adds distortions itself.
do with amp you get a "stronger" but not necessarily "better" signal/noise mixture.

each device has a specific input sensivity, maybe your receiver has a kind of amplifier integrated and the active antenna overdrives the input while the TV is less sensitive and produces a better result with additional amplification.
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post #7 of 7 Old 01-12-2019, 02:17 AM
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Yea it really depends on how the amplification is done. It will amplify whatever is coming in (noise + signal). In my case, if I add an amplifier by the TV it makes it worse. I have a roof top antenna and the amp is there and it helps.

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