Thread: Noise Threshold
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Old 23-Jan-2016, 6:07 PM   #6
Retired A/V Tech
Join Date: Aug 2012
Location: S.E. VA
Posts: 2,569
Andy Lee made a post on the AVS Forum with two very good Noise Margin diagrams, one for an indoor antenna without a preamp and the other for an outdoor antenna with a preamp.
TV Fool Discussion Thread
should be post #397 in that thread
You have to log in to see the images in his post, but you should be able to recover the images from the attachments there or here.

I added some notes to his diagrams to help me understand the Noise Margin concept when I was learning about it.

Attached Images
File Type: png AndyLeeNM1rev.png (72.1 KB, 3486 views)
File Type: png AndyLeeNMdiag.png (142.0 KB, 2960 views)
File Type: png AndyLeeNM1p.png (20.2 KB, 1086 views)
File Type: png AndyLeeNM2.png (44.5 KB, 1204 views)
If you can not measure it, you can not improve it.
Lord Kelvin, 1883

Last edited by rabbit73; 11-Sep-2017 at 8:33 PM.
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