[600MRG] EIRP

[Rudy Severns]

Ed raised a question on my calculation of EIRP to Pr, radiated power.
According to Fritz's note on the standard definitions ERP is defined with a
different reference from EIRP!  ERP is referenced to a "dipole" in free
space while EIRP is referenced to an "isotropic" radiator.  I find that
distinction bizarre but from Fritz's note that appears to be what the FCC
has done.  Neil's (XSV) posting last week on this subject has not only the
calculations but Fritz's original note.  If you think Fritz's interpretation
is wrong now would be great time to sort it out.  A couple of weeks ago I
misinterpreted it, using an elaborate explanation, and bought us an extra 3
dB.  It was very disappointing to lose that. 

 

73, Rudy