I would take that ARRL handbook write up with a grain of salt. In the day
they wrote that, zip cord had rubber; or other colored insulations that
could contain metallic dyes that would increase loss.
Today's clear vinyl might not be as lossy. PVC is higher loss than
polystyrene plastics, but might be tolerable in zip cord. There are many
colors of zip cord, and you would have to strip off some insulation and test
insulation alone, (no wire!) , in a microwave with a cup of water. If it
does not heat up by the time the water boils, the loss is very low in that
insulation.
-Stuart Rohre
K5KVH
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|