searchlight signal download

Where can I go to download the updated version of the searchlight signal p.c. board mentioned in the August issue of M.R.? It said to go to this site but I cannot find it.
JJB

After much searching (no pun intended) I finally found the article at:

http://www.mrmag.com/Content/Dynamic/Articles/000/000/001/216dnqdf.asp

Hope this helps.
DKT