Never heard them on Troop H but they have it available. They come up on Troop B most often when checking out suspicious vehicles or incidents on the watershed property. However, often is a relative term. You might hear them once a week in the summer and less than that the rest of the year.
Troop L is also a possibility as they transit Burlington going to Farmington/West Hartford.
As far as I know, they have nothing way over in Troop Ds area.
chris