Cecil Moore wrote in news:sFoDh.262$M65.0
@newssvr21.news.prodigy.net:

60m operation is limited to 50w pep relative to a
1/2WL dipole. Since a typical 60m mobile antenna
would be much less than 50% efficient, seems it
would it be OK to run an IC-706 at its normal 100
watt output level. Am I reading the rules right?

What are the actual words used in the rules?

If this is based on ERP, and uses the term Effective Radiated Power to mean
relative to a dipole (rather than say, EIRP), then the ERP would be
calculated from transmitter power output and antenna gain wrt a dipole, or

ERP = TxPower*AntennaDirectivity/DipoleDirectivity*Efficiency.

So the terms you left out were AntennaDirectivity and DipoleDirectivity,
but I should think that most HF whips would have Directivity lower than a
dipole, so you may be ok.

Owen