We used to have a link to Radio Shack for the "RS-232 Minitester", but in recent years RS no longer carries items like this.
Look at these links. There you will find them.
All 25 pin tester model
http://www.lashen.com/products/tools/CZ_32-122.asp
9 pin DB-9 model
http://www.bb-elec.com/product.asp?sku=9PMTT&TrailType=Sub&Trail=61
25 Pin model
http://www.elexp.com/cpt_45mt.htm
Best regards
Jim Springer
____________________________
Computer Aided Technologies
- http://www.scancat.com -
Order Toll Free or Order On Line
(USA Orders Only ) 1-888-722-6228
(NON USA Orders ) 1-318-687-4444
(Tech Support ) 1-318-687-2555
( Fax Line ) 1-318-686-0449