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hooked up rf amp..now get audio buzz?

244 Views 6 Replies 5 Participants Last post by  mp20748
Hello,


I installed a 20db RF amp to improve my picture due to 100' of cable..now I'm getting an audio hum too...anything I can get to fix this...my picture did improve with the amp.


thanks,

Mike
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Mike:

You mentioned that you used 100' of cable. What cable RG-6? RG-59 is not acceptible. Center conductor is too small and shielding is inadequate. You say you used a n RF amp with 20 dBof boost. What brand. It must be a 1 gHz amp. If you have Digital cable , you should use a return path amp, also. What kind of splitters did you use? Should be 1 gHz splitters. 900 mHz splitters don't cut it. Who put the fittings on and who put them on? You should use RG-6 fittings that are properly crimped on. All of these factors are very important, and if you don't do it this way, you likely will have problems. If you do not know the answer to these questions, that explains why you are having these problems.
I'm using RG-6 cable....not sure of the brand of amplifier...I got it at my local high end stereo shop ....$19.99.......I was able to use it without the splitter......My receiver is a Dish 501PRO ........I could've sworn I saw 2.4Ghz on the back of the amp...I'll have to remove it from the wall and check. The amp is chrome and plugs into the wall......I did notice a screw that can be adjusted on the amp and the word "tilt" is by it...any other suggestions?


Thanks,

MIke
If the audio is buzzing than the visual carriers are bleeding into the aural carriers.


You've got too much gain on your amp.


Go back and get a 10db or adjustable one.
Tilt

Refers to how much gain is on the upper part of the band vs. the lower part of the band
If the cord that plugs into the wall has a ground connector on it, remove the ground connector or use a cheater plug.
"If the audio is buzzing than the visual carriers are bleeding into the aural carriers.


You've got too much gain on your amp.


Go back and get a 10db or adjustable one."



Yep, my Wavetek signal analyzer would have indicated the same thing...
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