The company 02 (UK) Ltd were turned down by members of a Harrogate Borough Council planning committee recently in a second application for the same site.
The firm wanted to erect the mast on top of Harrogate Leisure Centre bounded by Beech Avenue, Hookstone Avenue, Mount Gardens, Halstead Road and Birchwood Mews.
Coun Fred Willis (Con Pannal) who represent the area on the borough council, has urged a government inspector conducting the appeal to reject it.
Coun Willis told the inspector that the pole would be a dominant and overpowering feature, creating an unneighbourly intrusion. "This would seriously diminish the amenity residents should reasonably expect to enjoy in their own back gardens," he said.
Coun Willis told the inspector that the development would conflict with three planning policies of the borough council.
One resident told Coun Willis: "The pole would just dwarf our back gardens and would totally dominate the skyline every time we stepped outside. It would be far too near properties and we desperately hope that the appeal will not succeed."