I tried the SuperRange CardBus card, and it gets a better signal than the one built in to my laptop, using an ity bitty 2dbi antenna. The laptop is an HP Pavilion dv8000
Is there antenna diversity? In other words, is the antenna with the
best signal chosen at any one time? If so, does the "antenna choosing"
happen ever certain number of milliseconds, or does it happen only
when first turning on, or something like that?
If no antenna diversity, does main and aux mean that:
If an antenna is attached to main, then it does not use the antenna
in aux, If no antenna in main, but one in aux, then it will use the aux
antenna. No point in having two antennas connected?
Last edited by mraeryceos; 09-27-2006 at 01:30 PM.
In 802.11b (DSSS), the radio looks at each antenna signal strength
and chooses the best one on a packet-per-packet basis.
In 802.11g (OFDM), the preamble air time is too short and the radio
cannot do this. It will switch antennas perfiodically if there are a
certain number of errors.
Some customers claim dviersity gives them range advantage, other say
it does not help much. In our testing, we found that it can give a
slight performance boost in 802.11b mode, but none in 802.11a/g
(OFDM) modes.
dual antennas on ubiquiti superrange card 
Linear Mode
