Why should one carry bulky device to attract a sandworm?
It is much easier to carry several (very compact and very basic, simple) shield generators.
Set one and wait for the sandworm.
Edit: https://en.wikipedia.org/wiki/List_of_technology_in_the_Dune_universe
It is noted in Children of Dune (1976) that the Fremen have developed a small shield generator known as a "pseudo-shield" to attract and madden a worm, for use as an ersatz bomb:
Seems that the only problem is that a sandworm attracted by that shield would be hard to control.
Is it so?