Amps
[Top] [All Lists]

Re: [Amps] Measuring RF Power

To: "R. Measures" <r@somis.org>
Subject: Re: [Amps] Measuring RF Power
From: Gary Schafer <garyschafer@comcast.net>
Reply-to: garyschafer@comcast.net
Date: Wed, 23 Mar 2005 12:52:29 -0500
List-post: <mailto:amps@contesting.com>

R. Measures wrote:
> 
> 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?
> 

If it were 1500 watts average power cw signal it would produce 1500 
watts heat in the R.

I don't know what you would do with 1500 watts RMS.

73
Gary  K4FMX

>>
>> 73
>> Gary  K4FMX

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



_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps

<Prev in Thread] Current Thread [Next in Thread>