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

[Stan, W1LE]

Thanks Warren,  Your data helps to set a perspective.   Stab, W1LE



On 2/14/2012 3:19 PM, k2ors at verizon.net wrote:
>   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
>