ac6v.com/ (ham radio stuff) 

dxzone.com/ (ham radio stuff) 

dxscape.com/ (DX web cluster) 

qrz.com/ (call sign lookup) 

apc-cap.ic.gc.ca/pls/apc_anon/query_amat_cs$.startup (Canadian call signs) 

radioreference.com/ (radio frequencies) 

websdr.org/ (on line software defined receivers) 

rac.ca/ (Radio Amateurs of Canada) 

arrl.org/ (American Radio Relay League) 

repeaterbook.com/repeaters/index.php?state_id=none (repeater lookup) 

artscipub.com/repeaters/ (repeater lookup) 

k5ehx.net/repeaters/qrepeater.php (repeater lookup) 

irlp.net/ (Internet Radio Liking Project) 

solarham.com/ (Solar & Propagation) 

wulfden.org/APRSQuery.shtml (Automatic Position Reporting System 

whrc-wi.org/railfreqs.htm  (North American railroad frequencies) 

heavens-above.com/ (satellite tracking) 

amsat.org/amsat-new/index.php (Amateur Radio Satellite information) 

timeanddate.com/ (sunrise & sunset) 

f6fvy.free.fr/qthLocator/fullScreen.php (grid square locator) 

radio-locator.com/ (radio station search engine) 

hornucopia.com/contestcal/weeklycont.php (Contest Calendar) 

vhfdx.info/Index.html (VHF & HF propagation real time maps) 

ips.gov.au/HF_Systems/6/5 (Australian HF propagation prediction) 

swpc.noaa.gov/# (Space WX Prediction Centre) 

voacap.com/coverage.html (Station-to-Station propagation) 

shortwave.be/ (Shortwave radio stations) 

shortwaveradio.com/ (Shortwave radio stations) 

cia.gov/library/publications/the-world-factbook/ (World Factbook) 

state.gov/misc/list/index.htm (Country information) 

zerobeat.net/g3ycc/hamlinks.htm#callbooks (Ham Radio Resources) 

fairradio.com/ (The “Princess Auto” of ham radio) 

mfjenterprises.com/ (Ham radio accessories) 

sgcworld.com/ (Ham Radio tuners & antenna information) 

radioworld.ca/ (Ham Radio Dealer – Toronto) 

ntfc.ca/ (Ham Radio Dealer – Calgary) 

burnabyradio.com/ (Ham Radio Dealer – Burnaby) 

aesham.com/ (Ham Radio Dealer- U.S.) 

hamradio.com/ (Ham Radio Dealer –U.S.) 

wsprnet.org/drupal/wsprnet/map (Weak Signal Propagation Reporter Map) 

voacap.com/prediction.html Propagation Prediction 

voacap.com/coverage.html Propagation Map (see above) 

425dxn.org/ (DX Newsletter) 

radioing.com/eengineer/convert.html (RF Unit Conversion Formulae) 

amphenolrf.com/simple/cable_specs.pdf‎ (coaxial cable properties)