Ron Kosakowski's


The PSDTC Was Established in 1988

An education in martial science as well as martial art!

A literal university of many martial art styles right here in Waterbury!


Click here to see information on Inosanto Kali and Pekiti Tirsia Kali Click here to see information on Inosanto Kali and Pekiti Tirsia Kali Cick here to see information on Kun Tao Dumpag Click here to see information on Jun Fan Gung Fu/ Jeet Kune Do, Mixed Martial arts, MMA fighting, Muay Thai Click here to see a blend of Brazilian Jiu Jitsu, Russian Sombo, Shoot Wrestling, Judo, Kuntao, Silat adn Dumog for just grappling, Mixed Martial Arts, MMA fighting or self defense purposes
Inosanto Kali

Pekiti Tirsia Kali

Kuntao Jun Fan Gung Fu /
Jeet Kune Do
Integrated Grappling

Special Programs
& Events

Class Schedule
& Directions

About the School





Our Instructors

A message from Ron Kosakowski
PSDTC Owner and Lead Instructor

To all who are looking to train in Jun Fan Gung Fu / Jeet Kune Do and Kali, these guys have a lot to offer. So if it is convenient to travel to either one of the instructors below, feel free to e-mail or call them to find out more information. I keep a tight watch on all my students, even if you are training with another student of mine to ensure quality control that is lost in many martial arts now a days. I hold bi-monthly workshops (see events section) to keep everyone on the same page, though freedom of expression still exists. We want to be one big happy family to train together without the usual politics that occur constantly in other styles. Good luck in your quest and we will see you training soon!


John Marinaro

Kuntao Dumpag Kuntaw Kuntau Rossi Kun Tao

John Marinaro has been with the PSDTC for a long time. John is a Black Belt Level 1 in Kuntao. A very good Kuntao instructor and a very good Kuntao representative.







Frank Summa

Kuntao Dumpag Kuntaw Kuntau Rossi Kun Tao

Frank Summa started his study of the martial arts in 1984, under Master Robert E. Beaudoin, in the art of Tang Soo Do.  In 2000, He started to train under the guidance of Sifu/Guro Ron Kosakowski, in the arts of, Jun Fan Gung Fu/Jeet Kune Do, Inosanto Kali and Pekiti Tirsia Kali, and Kuntao Dumpag.

Under Sifu Ron Kosakowski he has achieved the levels of, Apprentice Instructor in Jeet Kune do concepts & Filipino Martial Arts, and Apprentice Instructor in Jun Fan /Jeet Kune Do. Frank is a good all around fighter in standup Jeet Kune Do and ground work. He also takes a lot of time to go all out in stick fighting and knife fighting. A very patient instructor with newer students!  Frank is also a Black Belt Level 2in Kuntao Dumpag.






Jesse James Kosakowski


Kwame Smith - Associate Instructor Level 4 under Ron Kosakowski

No picture yet

Kwame has been at the PSDTC since 1990 and has been fighting and training hard since. He is now the highest ranking student at the PSDTC to date!

More information, contact info and picture coming soon



David Van Den Ameele

Dave is an Apprentice Intructor Level in Jeet Kune Do Concepts and Filipino Martial arts under Ron KosakowskiDavid Van Den Ameele had received two Apprentice Instructor certificates from Ron Kosakowski at the Practical Self Defense Training Center. One is in Jun Fan Gung Fu / Jeet Kune Do Concepts and the other  was in the Filipino Martial art, Kali - Silat. Dave has been training there a very long time and has been working very hard all those years at getting good detailed technical skill and of course, learning more! His hard work, his superior loyalty as well as all he does for the school is exactly what a true martial artists image is supposed to portray at the PSDTC. 

Prior to coming to the PSDTC, Dave trained 18 yrs Ji do kwan-Tae Kwon Do Studying for 3rd degree Black Belt when his Instructor, Bud Whitney had Passed away. It was around this time Dave began his training at the Practical Self Defense Training Center in Waterbury Connecticut through a combination of regular classes, private training and workshops back around 1993 learning Jeet Kune Do, Kali-Silat and Integrated Grappling Systems. His goal now is to learn and train with the hopes of one day being an Instructor in the Rossi Kuntao System some day.

Unfortunately Dave had passed away from cancer. He was a good friend to everyone at the PSDTC and he was highly recommended by all students and instructors there. We miss him!


Tod Southard

Todd is an Apprentice Instructor Level in Jeet Kune Do Concepts and Filipino Martial arts under Ron KosakowskiTodd Southard, who has been coming to the Practical Self Defense Training Center in Waterbury, Connecticut from the Springfield Massachusetts area since 1996. He has received his Apprentice Instructorship in Jun Fan Gung Fu / Jeet Kune Do and Filipino martial arts and also an Apprentice Instructorship in Kali - Silat (a blend of Pekiti Tirsia Kali and Inosanto/Lacosta system). He can fight very well in all ranges including many of the weapons from the Filipino Martial Arts. His patients for teaching those who don't know martial arts is something you have to see for yourself!

He is a very precise instructor and goes highly recommended! If you are in the Springfield, Massachusetts area and you would like to learn from Todd in Jeet Kune Do, Integrated Grappling Systems or Kali, Tod's Contact information is as follows:

  "Anyone in Western Mass. who is seeking affordable, high quality private/semi-private instruction in JKD/Kali should contact Tod for more info. at: or (413)222-2527"


Steve Chipman

Steve is an Apprentise Instructor in Jun Fan Gung Fu/Jeet Kune Do and Jeet Kune Do Concepts and Filipino Martial arts under Ron KosakowskiSteve Chipman a Police Officer who started his training by traveling all the way to the PSDTC from Vernon Connecticut since 1998 and has received two certifications. An  Apprentice Instructor in Jun Fan Gung Fu/Jeet Kune Do/Integrated Grappling Systems and Jeet Kune Do Concepts/ Filipino Martial Arts.

Steve is well versed in Jeet Kune Do stand up fighting taking it right to the ground. Ground work is a specialty of his!

More information and contact info will be here soon!


Randy (the Savage) Rowe

MMA Mixed martial arts in CT brazilian Jiu Jitsu sambo somboHe is an accomplished fighter and the only one to receive a certification in Integrated Grappling Systems/NHB Coach Certification so far! Not to mention a very good teacher. He has been a very loyal and devoted student at the PSDTC since 1994.



Gina Santoro

Gina is a Associate Instructor in both areas of Jun Fan/Jeet Kune Do and Jeet Kune Do Concepts under Ron Kosakowski and Sifu Larry Hartsell. Gina is also a Brown Belt Level in Kun Tao Dumpag!

Gina Santoro is Associate Instructor Level 1 Instructor in Jun Fan Gung Fu / Jeet Kune Do & Jeet Kune Do Concept/Filipino Martial Arts.



Click Here for more "Women's Self Defense" information!








Those who make a peaceful revolution impossible will make a violent revolution inevitable.

- John F. Kennedy (1917 - 1963)





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Jun Fan Gung Fu / Jeet Kune Do Kali - Silat Pekiti Tirsia Kali, Arnis, Eskrima Kuntao Integrated Grappling Systems Muay Thai MMA Brazilian Jiu Jitsu Tai Chi Wing Chun

Copyright 2001, Ron Kosakowski
Practical Self Defense Training Center
847 Hamilton Avenue
Waterbury, CT 06706
203-596-9073 or 203-802-8533
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