Talk:Very high frequency

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Contents 1 Ireland 2 repeater stations 3 Line of Sight? 4 Line of Sight 5 When? 6 88-92 non-commercial??? 7 move paragraph 8 TV channel 6 over fm radios 9 Subsection 'United States, Canada, and North America'

[edit] Ireland

Ireland uses VHF I believe. Can anyone add a few lines about this, if Im right?--Richy 20:03, 28 May 2005 (UTC) Every one uses VHF, it is found in many devices you use every day.

[edit] repeater stations

[edit] Line of Sight?

What do the line of sight equations have to do with VHF? I'll delete in the morning if no explanation comes up. MooCreature 03:56, 14 February 2006 (UTC)

VHF range is line-of-sight, so the equations are directly relevant, giving the range available for a given antenna height. Do not delete. If anything, a word of explanation is all that is needed. Graham 03:54, 14 February 2006 (UTC)

Doesn't the formula for line of sight evaluate in nautical miles, not miles?

[edit] Line of Sight

Points to note

When using height in feet, the range will be in nautical miles. The formula shown for range is a rule of thumb and is also incorrect. It shows the square root of (1.5 x height). It is in fact 1.5 x (sqrt of transmitter height). The more accurate formula is 1.25 x (sqrt of transmitter height + sqrt of receiver height)

Neil Gascoigne 15 Aug 2006

[edit] When?

When did the Sporadic-E event happen in Central Illinois? I'm sure that was a surprise to many living there. --66.153.178.253 23:36, 23 October 2006 (UTC)

[edit] 88-92 non-commercial???

it says that FM 88-92 are reserved for non-commerical stations in the United States but i live in the detroit area and there are commercial stations that broadcast in this range. Can someone please provide an explanation of a non-commercial station or edit the page accordingly? —The preceding unsigned comment was added by 68.248.43.122 (talk) 06:19, 5 January 2007 (UTC).

[edit] move paragraph

I think the paragraph that is in the introduction about the ducts should be moved to the actual content, under its own heading. It doesn't add much to the introduction, which is supposed to give a general overview about the subject...

[edit] TV channel 6 over fm radios

Can someone who is knowledgeable about this add something (hopefully sourced) about how TV VHF channel 6 audio can be heard on the low end (~ 88 MHz) of FM radios. As anyone else experienced this? THis was the origin of TV on the Radio's band name, I presume as well. THis sentence is a good start: (but more could be put in.) "In North America, however, this bandwidth is allocated to VHF television channel 6 (82-88MHz). The audio for TV channel 6 is broadcast at 87.75 MHz." Thanks. --Rajah 21:49, 31 July 2007 (UTC)

[edit] Subsection 'United States, Canada, and North America'

Could someone please have a look at this subsection title and make sure it's correct? To me it looks like it could be worded better (as far as I know, the only country in North America besides the US and Canada is Mexico), but I might be missing some fine cultural differences between European and North American approach so I'll leave it to the North Americans to decide. —Preceding unsigned comment added by 203.173.228.64 (talk) 03:11, 22 March 2008 (UTC)

North America actually contains all the countries down through Panama as well, including most of the islands in the Caribbean. But yes, this headline is very redundant and almost stupid-sounding since the US and Canada are in North America. = ∫_t^c 5th Eye 00:51, 9 May 2008 (UTC)