EIRP and ERP

From: "Joe G \(Home\)" <joe.g@xxxxxxxxxxxxxxx>
Date: Wed, 31 Aug 2005 23:08:22 +1000

HI All,

What the difference between EIRP (Effective Isotropic Radiated Power) and
ERP (Effective Radiated Power)?

Are both EIRP and ERP feild measurements?

How do you relate EIRP / ERP to dBuV/m?

Why the questions - the reguilations on some Tx requipment state an EIRP
limits / requirements

BUT EIRP is what's coming out the antenna.

So if you measure 5watts at the 50ohm termination - you have to factor in
cable loss and Antenna gain loss.

So I guess EIRP = Power (50ohm) - cable loss + Antenna gain + (EIRP / ERP
factor) .... correct?

Thanks in advance

Joe

.

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