Owen Duffy wrote:
. . .
I understand. One of the cable types that I tried to fit to the loss
model was Davis Bury Flex, and it had the worst regression errors of all
of the 90 line types that I modelled. . .

Ah, yes, that stuff. It's easy to make it fit a model at about 200 MHz
and above -- just flex it a bit until the loss matches your model. At
400 MHz, you'll have even more variation to work with.

Roy Lewallen, W7EL