Richard Clark wrote:

Cecil Moore wrote:
What is the feedline loss in dB?

The same. You haven't substituted it with a lightbulb have you?

The same as what? The feedline loss is 25 watts. What is the feedline
loss in dB? Please give me a number instead of a hard time.

A signal generator is pouring 100 watts into the line because its
source is seeing 50 ohms. The circulator load resistor is dissipating
50 watts of that source power. The load is dissipating 25 watts and
the feedline is dissipating 25 watts. What is the feedline loss in dB?

Is the dB loss in the feedline calculated using the signal generator
output power of 100 watts or is it calculated using the 50 watts of
NET power available as it would be (by definition) if the source were
a ham transmitter?

Why is it so hard to get a straight answer to this simple question?
--
73, Cecil http://www.qsl.net/w5dxp