[600MRG] Antenna efficiency question

[Eric NO3M]

Depends on losses, esp. ground.  Two antennas with exactly the same 
dimensions, differing only in the ground screen, could have radically 
different efficiencies.

What's your feedpoint R w/o any matching on 160M?

73 Eric NO3M / WG2XJM

On 04/20/2016 07:26 PM, Jim Miller wrote:
> Is there any "rule of thumb" that would give me a ball park number for the
> expected efficiency of my 67x67ft inverted L that I now use on 160 if I
> just added a loading coil at the bottom?
>
> If it was (or could be) 10% and the FCC only grants 1w ERP when they give
> us an official band then a 10W amp would be all that is needed.
>
> OTOH, if it is likely to be closer to 1% then 100w would be needed.
>
> TIA
>
> 73
>
> jim ab3cv
> _______________________________________________
>