Well ... sort of. Some of the reflected power heats up the ATU and/or
PA depending on the match it sees [actually, some of the forward power
does too, tuners have forward losses]. "Delivered Power" is somewhat
difficult to calculate. Working into a matched, non-reactive load
[common for AM broadcast, at least a number of years ago], it's "I
squared R" where R is the radiation resistance of the antenna ... and
some minor conductor losses in the antenna. Things get pretty sticky if
it's not a matched load.
73,
Fred K6DGW
- Northern California Contest Club
- CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015
- www.cqp.org
On 1/12/2015 4:46 PM, Phil & Debbie Salas wrote:
Actually, "delivered power" is pretty much what you are measuring.
Remember that reflected power is re-reflected by the source and adds
back into the forward power. So in your example, you are transmitting
1200 watts, having 200 watts reflected, then the 200 watts is
re-reflected by the source giving you the 1200 watts. Of course, there
will be transmission line SWR-related losses.
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