We check all the links at least once per month. We guarantee that 99% of the links are operational or flagged as "Out of order". Non working links are first flagged as "Out of order". If the link stays dead we remove it later from the list after an unsuccessful attempt to find out a new address.
Some good links
by HB9BBD
Tracking software
by AH0A
All kinds of keys
by DL5CI
Memory ICs
updated
and Application notes
Components
Hungarian Radio Amateur Society
SSTV program
Ceramic filters, ...
Mississippi Valley DX Contest Club
Lots of good technical stuff
and the Brookdale Amateur Television Repeater
:updated
VHF/UHF/Microwave Resources
Petlowany Three-Band Burner Antenna
Zep Antenna
Jpole antenna
Contest program by K8CC
in Alabama
Northern California Contest Club
North Carolina DX Foundation
North California DX Foundation