On Fri, 18 Jul 2003 09:28:07 -0400, "Tarmo Tammaru"
wrote:


"Dilon Earl" wrote in message
...
On Thu, 17 Jul 2003 09:06:32 -0500, "William E. Sabin"
sabinw@mwci-news wrote:
If I have a 100 watt transmitter and my wattmeter shows 3 watts
reflected. Is 3 watts actually being dissipated in the tank and final
PA?

That would depend on the output impedance of the transmitter. If it is 50
Ohms, all the reflected power would be absorbed by the transmitter. If it is
0 Ohms or its Norton equivalent, it is all reflected, and none is
dissipated.

Tam/WB2TT


Hi Tam,

This is painfully obvious. It is also painfully demonstrative. It
also appears to be painfully avoided in lieu of providing an actual
value (Punchinello seems to wholly ignore his own cries that lacking
numbers renders such whining as ignorance).

I've read for years that the common RF rig is NOT a 50Ohm source, and
absolutely none dare commit themselves to just what value it is (much
less offer their own measure). Being a physical reality, the rig must
present some real value, but vacuous theory seems to bar that
discussion.

73's
Richard Clark, KB7QHC