Yes, but all feed lines are lossy and at the frequencies we are using here the lengths of coax are dumb-ass. We don't have an awful lot of signal to begin with, so throwing half of it away is plain stupid. I remember in my ham radio days a friend used an unterminated roll of coax as a dummy load when experimenting up in the GHz range. The signal barely made it to the other end, making a terminating resistor unnecessary!

Mike