[Amps] Measuring RF Power

[R.Measures]

On Mar 22, 2005, at 2:53 PM, Gary Schafer wrote:

> When adding PEP to the mix it is vital that average power be understood
> properly. Best to put RMS power out of mind as it is good for nothing
> but confusion.
>
> Reading the FCC definition of PEP it goes something like:
> Peak envelope power is the AVERAGE power in one RF cycle at the crest 
> of
> the modulation envelope.
>
> That means if you transmit a 1500 watt average power cw signal, your 
> PEP
> is also 1500 watts. If your peaks hit 1500 watts on voice your pep is
> 1500 watts.
>
> Imagine the confusion trying to figure that out if you called the 1500
> watt cw signal RMS power!

How many watts of heat would a key-down 1500w RMS  CW signal produce in 
a R?
>
> 73
> Gary  K4FMX
>
>
>>
>>
>>
>> My old ARRL Handbook calls RMS power a mathematical curiosity. If one 
>> were
>> measuring RMS power I assume it would equal .7071 times peak power? 
>> Or. 1.414
>> times average power?
>>
>> We can really make this interesting by adding pep to the mix!
>>
>> 73/k5gw
>
>
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>

Richard L. Measures, AG6K, 805.386.3734.  www.somis.org