Antennaweb.org Vs. 2150.com

Does antennaweb.org factor in your magnetic declination during calulation?

The 2150.com website allows you to actually put in a magnetic declination value. By doing so, my results are very different from the antennaweb's results!

TIA.

Allows you put a Whatzit in a Whonow?

Huh?

What's this "magnet's perspiration" of which you speak?

I prefer antennaweb.org because 2150 is not picking up very much data right now - FCC database is in pretty bad shape.

You have to enter expired records to see all of your stations, then you get extra garbage, like you get with TVfool.com (stations you have no hope of seeing).

Who left the door unlocked?

Does antennaweb.org factor in your magnetic declination during calulation?

The 2150.com website allows you to actually put in a magnetic declination value. By doing so, my results are very different from the antennaweb's results!

TIA.

Yes. Antennaweb.org factors in the magnetic declination of your location and specifies all headings as bearings from Magnetic North rather than as bearings from True North.

Are you sure that you have the correct magnetic declination for your location?


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Oh okay. So magnetic declination is just fancy terminology for the difference between Compass North and True North.

Got it. Thanks.

I prefer antennaweb.org because 2150 is not picking up very much data right now - FCC database is in pretty bad shape.

You have to enter expired records to see all of your stations, then you get extra garbage, like you get with TVfool.com (stations you have no hope of seeing).

What garbage are you referring to? My experience has actually been that antennaweb tends to have the most number of bogus and missing transmitters (yes, even if a large height is entered to overcome it's conservatism). It doesn't seem like the data gets updated too often.

The nice thing about 2150 is that you can choose to look at different sets of data. The bad thing about it is that I find its results non-intuitive because it's sort of "reversed", showing everything from the perspective of the transmitters instead of my location.

For transmitter info lookup, I think the FCC website is the best simply because they have the most amount of information available and it's probably more "correct" than any of the other options.

Oh okay. So magnetic declination is just fancy terminology for the difference between Compass North and True North.

Got it. Thanks.

Apparently, the magnetic poles are moving at 40 km per year, too (all sorts of info at http://www.ngdc.noaa.gov/seg/geomag/declination.shtml).