[BC] EMRP - Was: WLW--when was it last 500 kW?

[PeterH5322@aol.com]

>OK ... tell them how much you can put out from your facility, both TPO and 
ERP.

All active treaties (U.S.-Canadian; U.S-Mexican; and ITU Region 2, AKA 
"Rio") codify what is termed "Effective Monopole Radiated Power" (EMRP).

A < 90 degree radiator is taken to be 0 "dB (kW)" EMRP.

A 90 degree radiator is taken to be about 0.25 "dB (kW)" EMRP.

A 180 degree radiator is taken to be about 2.1 "db (kW)" EMRP.

A 225 degree radiator is taken to be about 3.3 "dB (kW)" EMRP.

See any of the treaties for the precise graphs ... usually entitled: 
"Fig. 1a - Effective Monopole Radiated Power (EMRP) and Field Strength at 
a Distance of 1 km ...".

In the U.S., Canada and Mexico, a better measure is kW with reference to 
362.10 mV/m/kW at 1 km (Class A stations), 281.63 mV/m/kW at 1 km (Class 
B and D stations), or 241.40 mV/m/kW at 1 km (Class C stations).

A few Class As, some Class Bs, and many Class Cs have highly faked 
efficiencies, based upon the measures mentioned in the immediately 
preceding paragraph.