Ahmed forgot to tell us: what method is he using to measure the delay?
If he is using some RF measurement equipment (e.g. RF vector analyzer or
I/Q demodulator+osciloscope) and he has the wifi card antenna output
connected to the measurement equipment by a coaxial cable, then there
should be no interference from any other devices transmitting 802.11
signals. Except the case when the card has 2 connectors - then there is
the problem of the "antenna selection", which was targeted by Bruno's
"ath5k antenna debugging and diversity settings
<https://lists.ath5k.org/pipermail/ath5k-devel/2010-February/003106.html>"
patch.
Holger Schurig napsal(a):
If you remove the antenna of your card, wind the receive gain down to the
minimum possible value, your card card will receive the minimum of packets
from other boxes.
Wouldn't it be even better to do a proper termination between ground and
signal, e.g. by a shielded 50 Ohm resistor?
(Not sure if WLAN equipment is terminated at 50 Ohm)
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