[600MRG] transmitting power

[Eric NO3M]

RR, just thought it was worth noting the additional factor in the 
equation in case anyone is reading this thread and has not consulted 
your notes.  That gain factor contributes significantly to the 
calculated TPO.

I generally use the modeled gain over "real" ground, conductivity and 
dielectric constants adjusted per government map (rough estimates), 
which for my particular vertical is 3.03 dBi, or a factor of 
approximately 2.  However, using a perfect ground model gain of 4.77 dBi 
(3 factor) is a good recommendation since it cannot be exceeded.

73 Eric NO3M


On 10/27/2017 05:15 PM, Rudy Severns wrote:
> Hi Eric,
>
> It's actually quite simple.  The directivity of very short verticals is essentially 3, so we're allowed to radiate 5/3=1.67w.  For the ARRL experimental group the EIRP was 20W so I limited my radiated power to 6.7W.  Obviously a 10 kW slug did not appeal because I didn't realize how it was used in another model of Bird.
>
> This is spelled out in chapter 1 of my notes.
>
> 73, Rudy N6LF
>
>