HPSDR.ORG
[Sorry, HPSDR has left the building. WHY? Instead, the following links might be of interest to you.]
SDR LINKS
QS1R Receiver: http://www.srl-llc.com
YU1LM/QRP Pages: http://yu1lm.qrpradio.com/
Softrock40 Group: http://groups.yahoo.com/group/softrock40/
GenesisRadio: http://groups.yahoo.com/group/GenesisRadio/
ADAT: http://www.adat.ch/index_e.html
USRP1/2: http://www.ettus.com/
WebSDR: http://www.websdr.org/
Rocky: http://www.dxatlas.com/Rocky/
uWSDR: http://www.uwsdr.net/
acorn-sdr: http://code.google.com/p/acorn-sdr/
DttSP: https://www.cgran.org/wiki/DttSP
GNURadio: http://gnuradio.org/trac/wiki
INTERESTING LINKS
CDG2000: http://groups.yahoo.com/group/CDG2000/
picaproject: http://uk.groups.yahoo.com/group/picaproject
PicaSTAR: http://carnut.info/star-parts/
150 W PA: http://myweb.tiscali.co.uk/radiokits/radio-related/150W_PA/150w_PA.htm
Toroid Info: http://toroids.info/
DG8SAQ Page: http://www.mydarc.de/dg8saq/
M0WWA Page: http://www.m0wwa.co.uk/page/projects.html
Clifton Laboratories Page: http://www.cliftonlaboratories.com/
N2PK VNA: http://groups.yahoo.com/group/N2PK-VNA/
NorCal QRP Club: http://www.norcalqrp.org/
LTspice IV: http://www.linear.com/designtools/software/#Spice