Address. Pulsetek, Presteigne, Powys,
  LD8 2EG. U.K.
  Telephone 00447909663395
  Telephone number for international 
  enquiries 0034647822938.
  email john@pulsetek.com

 
  Model PDL

40V into 50 ohms. 50ps FWHM pulse width, jitter less than 10ps RMS, delay less than 3ns,
low cost pulser,

  Model PDVL

40V into 50 ohms, 50ps or better rise and fall time 0.1-10ns continuously variable pulse width, jitter less than 10ps RMS,