Talk:Effective radiated power

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[edit] I was under the impression

That to have any gain an antenna had to be directional. Plugwash 19:01, 16 December 2005 (UTC)

And indeed they are. The important distinction is between omnidirectional and non-directional or isotropic. Isotropic antennas only exist in theory, but are true point sources of radiation in all three dimensions. An omnidirectional antenna is non-directional in one plane (usually horizontal for broadcast stations) but highly directional in a perpendicular plane. Since there are no real isotropic antennas, broadcasting regulators usually consider omnis to be "non-directional", and only those antennas which exhibit directionality within the horizontal plane are called "directional". You can in addition get into the question of beam tilt, where the omni "pancake" can be pushed out of the horizontal plane -- either mechanically (in which case it's still flat, just at an angle to horizontal) or electrically (in which case the "pancake" turns into a cone). 121a0012 02:53, 17 December 2005 (UTC)

[edit] CITI Inaccuracy

According to the article on CITI, it's effective power, which had been 210,000 watts was reduced in 2002 to 100,000 watts.

In either case, the information presented in this article is inaccurate and should probably be updated or replaced.

Perhaps FM96 in London, Ontario, Canada could be used as an example as it currently outputs the highest ERP in Canada (according to its article) at 179,000 watts. 216.240.7.149 23:55, 5 March 2007 (UTC)

[edit] Merge

What about merging this Equivalent isotropically radiated power into Effective radiated power? The former does have a very similar alternative name, "Effective isotropically radiated power". (Please discuss it here, not there.) —Preceding unsigned comment added by 128.138.158.200 (talk) 01:45, 7 May 2009 (UTC)

I would be inclinded to merge. It's the same principle just with a different reference antenna. Plugwash (talk) 19:04, 7 May 2009 (UTC)