Where is the best place to procure a practice elt??

[0]

Off topic:  IIRC, whenever I was on a SAREX etc... We would include "This is an exercise." at some point during each transmission... Usually at the end, or anywhere where the traffic could be misconstrued as Real World.

We still do that.  Although some people forget to say it. 

[DG]

The NESA MAS position is (unequivocally and emphatically) to use the term "Practice Beacon."

And never ever to use the term ELT except in an actual search mission.

[BigMojo]

We have so many Super Squirrels around here that we just use the term "target" or "objective" in all radio traffic we never use the term ELT, EPIRB, PLB, Practice Beacon except in person, and when describing the found unit to the IC.

[KyCAP]

http://www.seimac.com/index.php?option=com_content&task=view&id=31&Itemid=51

http://www.cmcelectronics.ca/Pdfs/satfind.pdf

This is the last round of "practice targets" that I am aware of NHQ procuring and distributing.