no... and yes.... there would be some pickup, but only from leakage through
an imperfect braid. because the current is on the inside of the shield it
would not couple to the cable on the outside. the electric and magnetic
fields are contained completely inside the shield.


"EA3FYA - Toni" wrote in message
...
En/na Dave ha escrit:
... Come on, just a little fight???

Just a question about coax cables:

I know that a coax cable does not radiate (if common mode currents
properly suppressed) because both conductors are apparently "in the same
place" (wouldn't know how to express it in more technical terms).

Now the question is: This is true for big distances from the coax, but is
it also true when you get very close to the coax? Imagine a conductor
taped to the outside of a coax for some meters. The capacitive coupling to
the braid is much higher than the coupling to the inner conductor. Would
it pick some of the current in the coax. If not, why not?

(apart from fun I'm really interested in the answer as I'm not quite sure
if a coax running parallel to unshielded and not twisted computer cables
would pick harmonics from it on RX or create interferences on TX)

--
Toni