Hello Jzhao:

A lot of guys want to use the N type connector believing they have lower
loss. Probably not a hole lot of difference in the loss between a N type
and a PL-259 connector. The PL-259 connector will take way more power
than the N type connector, experience has shown us that.

I would think the length of the connector and a ball park VF of 80
percent would get you real close.

What ya need that info for?

Jay in the Mojave

Jzhao wrote:
Hi,

Anybody know about the electrical length of the coaxial adaptors, for
example the N adaptor (m/m, m/f, f/f).
what is the formula? how to calculated?