Clearly, this is "settled science". Power is measured at the final of the radio or amplifier, whichever is last. 1500W max PEP from the transmitter is clearly in the rules - as its quite clear how th
Wrong. The criteria on 60 meters is expressed in ERP. See 97.313(i): (i) No station may transmit with an effective radiated power (ERP) exceeding 100 W PEP on the 60 m band. For the purpose of compu
So, if I removed the output connector on my amplifier and wired the coax directly to the output relay inside, does the coax now become part of the amplifier? Jim - KR9U provides no standard for measu
I think this is technically wrong. They state it's PEP which is measured at the antenna. Definition of PEP from 97.3 (6) PEP (peak envelope power). The average power supplied to the antenna transmiss
Actually, no it's not. Sure, if you want to measure the "output power" of an amplifier, the obvious reference plane for the measurement is the connector on the amplifier. But I think as we get to mor
[...] You do realize you've contradicted yourself? Power supplied to a transmission line is not the same as power supplied to the antenna itself. Al AB2ZY ___________________________________________
And they don't mention ERP except for the new VLF. Wrong. The criteria on 60 meters is expressed in ERP. See 97.313(i): (i) No station may transmit with an effective radiated power (ERP) exceeding 1
It could be.. consider an absurd straw man - you've got your transmitter and coax inside a long airconditioning duct out to the antenna, so the only "connector" is a the end of the duct. Your transm
I think more is being made of this then what it is - the reason why it was defined as "supplied to the antenna" is that is indeed simple - and doesn't necessitate any math/measurements beyond that si
This is sort of an academic discussion - but one of some importance in the long run as more sophisticated radio systems start to be built. The idea of amplifier per element hasn't got a lot of tract
Further to Jim's point, Even if you accept that you must measure at the output connector of your amp, the rules certainly do not mandate an accepted norm of station construction. Just because most pe
I think more is being made of this then what it is - the reason why it was defined as "supplied to the antenna" is that is indeed simple - and doesn't necessitate any math/measurements beyond that si
Spot on, Kelly That's why in the microwave radio world, for frequencies above 18GHz, we built radios with the transmitter output bolted right onto the back of the antenna feedhorn for zero transmissi