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Old 4-Jan-2014, 5:47 AM   #1
Junior Member
Join Date: Dec 2013
Posts: 1
Explain 1Edge and 2Edge on site.

I think it would be a site improvement if 1edge and 2edge were explained in detail on the site.
Although TVFool showed me many channels that I could get based on my location, in reality most were 2edge channels. Not being as up to speed as the rest of you. I didn't realize what that meant until I had already purchased and installed an antenna that won't get anything my old analog antenna couldn't get.

I had to go out to other sites to find what 1edge and 2edge actually meant to reception. Not really pleased with the time and money I wasted.

So a section on 2edge/1edge may stop others from making the mistake I made.
cyrano is offline   Reply With Quote
Old 4-Jan-2014, 5:39 PM   #2
Join Date: Dec 2009
Posts: 632
The radar plots are discussed in some detail in the Signal Analysis FAQ.

In general, the Noise Margin (NM) number is what matters most. The path that the signal took to get to you (LOS, 1edge, 2edge, Tropo) is informational, but not all that important because those effects have already been factored into the NM number.

A far away transmitter with a line-of-sight (LOS) path could have the same NM value as a nearby transmitter that's blocked by a mountain (1edge or 2edge). You can't tell if a station is easy / hard to receive simply by looking at the distance or the path type indicator.

The Noise Margin will tell you how much or how little antenna you need to pick up a station, or whether you have a chance to get it at all. Weak stations will have low NM values, and you'll need more antenna gain and possibly a pre-amp to compensate.

If you post a link to your TV Fool report under the Help With Reception section of our forum, there are many helpful experts online that can help interpret your situation and provide suggestions.
mtownsend is offline   Reply With Quote


1edge, 2edge, diffraction

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