The Glaslough community are "up in arms" and will seek a judicial review on An Bord Pleanála's decision to grant permission for the construction of a mast in the village.
Monaghan County Council refused permission for Vodafone to erect a 19.5 metre mast on Main Street in Glaslough.
The Local Authority said the telecommunications mast would "adversely affect the character and appearance" of the village.
However, Vodafone appealed the decision and said a new mast is needed to provide "improved broadband coverage".
In its ruling, An Bord Pleanála stated that the mast would not "injure the character or setting" of Glaslough to "such a degree as to warrant a refusal".
An "emergency meeting" was held last night and speaking at the meeting, Carole Donaghy said Vodafone "know that this isn't acceptable":