[Lowfer] WRC-12 passes 472-479 kHz allocation

[k2ors at verizon.net]

 Stan,


   You would have to be more specific about the size of the vertical and top hat but I can give two examples that might help guide the discussion.
I modeled a  90' tall vertical with a 309' single wire top load (vertical "T")  (essentially the antenna in use at WE2XGR/6) and came up with a gain of -10dBi.
Fritz modeled his 45' vertical with no top loading and came up with a gain of -16dBi


So for the 90' top loaded case 50W into the antenna would yield 5W EIRP and for the 45' vertical with no top loading 200W into the antenna would yield 5W EIRP.

 
 
 73 Warren K2ORS
 WD2XGJ
 WD2XSH/23
 WE2XEB/2
 WE2XGR/1

 
On 02/14/12, Stan, W1LE<stanw1le at verizon.net> wrote:
 

Any idea how much RF input power would be needed to achieve a 5W EIRP 
with a vertical antenna with a top hat ?
Let's assume New England terrain with a minimum ground screen.

I consider this as progress.

Thanks to all those who have persevered to operate on the ~ 500 KHz band.

Stan, W1LE Cape Cod


On 2/14/2012 10:16 AM, w1tag at charter.net wrote:
> From the ARRL site:
>
>
> http://www.arrl.org/news/amateur-radio-gets-secondary-mf-allocation-at-wrc-12
>
> Note, of course, two things:
>
> 1. The allocation would not be available for implementation by the
> various countries until 1 Jan 2013 at the earliest.
>
> 2. Some countries might not choose to implement it. For example, the
> 135.7-137.8 kHz segment was similarly approved at WRC-07, and never
> authorized in the U.S.
>
> John, W1TAG
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