Berkeley Varitronics Systems has released a new handheld Wi-Fi
optimizer called Beetle-B/A/N/G
(http://www.bvsystems.com/Products/WLAN/Beetle-BANG/Beetle-BANG.htm).
B/A/N/G is a wireless test receiver system that verifies, sweeps,
measures and optimizes all popular 802.11 Wi-Fi network standards
including 802.11b/g (2.4GHz), 802.11a (5GHz) and 802.11n.

When equipped with a BVS DF (Direction Finding) antenna,
Beetle-B/A/N/G locates and pinpoints rogue MACs, APs, STAs and SSIDs.
Packet analysis features include Delay Spread, Channel Frequency
Response (CFR), Multipath (Ec/Io), Signal-to-Noise Ratio (SNR), SSID
and Received Signal Strength Indicator (RSSI). BVS President Scott
Schober says that B/A/N/G is the only true handheld Wi-Fi packet
analysis and direction finding tool accurate to within +1 dB.

It can wirelessly detect rogue APs, hackers or any nearby MAC and can
also connect directly to network installations for precise antenna
alignment and optimization. Beetle-B/A/N/G includes both 2.4 and 5GHz
omni-directional antennae, a charger, software and hard carrying case
for US$3,500.