Here are some interesting websites for radio amateurs 

Contesting

RTTY Contesting The most useful site there is! – by Don AA5AU
MMTTY by Mako JE3HHT Probably the best RTTY program ever!
MMVARI by Maku JE3HHT Try this for PSK and AFSK RTTY
The AA5AU MMTTY site Help from Don AA5AU in setting up MMTTY etc.
Hamscope A great piece of software from KD5HIO
DXLab software suite A very useful suite of software for all your station needs
MultiPSK Neat software from Patrick F6CTE
BARTG The home page of BARTG
N1MM Logger+ Setting up help from Don AA5AU
N1MM  An add-on program for logging
RTTY interest group A dedicated site for all digimodes and searches
WSJTx
Hamapps
Hamspots

Interfacing your rig and TNC

Microham Very good interfaces! I use the MKII in my shack
Ernie WM2U Great info!

General amateur radio links

RSGB homepage Find out more about the RSGB
The Home Page of PSK31 This is a NEW mode, find out about it here!
The GARS web site

Find out about the Guernsey Amateur Radio Society

The ARRL info page General information from the ARRL
DX news from I1JQJ All the latest DX news and QSL info
Easy Rotor Control Computer-control of your rotator
A huge collection of links This site, by AC6V, contains 1000’s of links.
The website of Murray, ZL1BPU The home page of “Fuzzy Modes” (MT63, Hell, etc)
NG3K The NG3K Contest and DX info pages
QSL cards from UX5UO I use these cards
QSL cards from LZ1JZ I also use these

Callbook searching

Buckmaster The Buckmaster online callbook
The QRZ callbook Online QRZ callbook: you can even add your info on-line!
The GU Callbook Provided by the Guernsey Amateur Radio Society
‘QSL Manager’ checker IK3QAR list of QSL managers! A Must

Any comments or suggestion, please send to

phil (at) gu0sup (dot) com