useful GNU radio links

Ettus Research
GNU Radio
experiment notes
Josh knows
guanbo's blog
The Comprehensive GNU Radio Achive Network
        ftw80211ofdm
        bbn_80211 branch
discuss-gnuradio archives
an online USRP document

WiFi protocol analyzer
Normally, general driver only provide a fake ethernet packet to host, so wireshark can not give PHY and MAC information of WiFi. Wireshark official site tells that which WiFi chips and drivers are known to support raw WiFi info. Atheros is a good choice. With a PCMCIA outlook, always supported by Ubuntu, Atheros WiFi chips can provide the raw PHY and MAC info.

manual
GNU radio has two popular manuals. One is doxygen doc telling C++ libraries; the other is "Simple-Gnuradio-User-Manual-v1.0" telling Python interface.