| Business | Phone |
| Radio Towers Inc 4138 Division Ave S, Grand Rapids 49548 | (616) 534-5770 |
| Acg Systems Inc 2150 44th St Se # 308, Grand Rapids 49508 | (616) 827-9746 |
| Communications Specialists Inc 4138 Division Ave S, Grand Rapids 49548 | (616) 534-5862 |
| General Communications Elects 2853 3 Mile Rd Nw, Grand Rapids 49534 | (616) 453-8231 |
| T & W Electronics Inc 1045 Division Ave S, Grand Rapids 49507 | (616) 241-3645 |