| Business | Phone |
| Acorn Technologies 2110 Overland Ave # 118, Billings 59102 | (406) 652-1515 |
| C W Wolfe Communications 1113 Central Ave, Billings 59102 | (406) 252-9220 |
| Cowboy Communications 718 Haugen St, Billings 59101 | (406) 256-8850 |
| R & D Systems Mobile Comms 1310 Saint Johns Ave, Billings 59102 | (406) 252-6329 |
| R F Communications Inc 2621 Overland Ave # A, Billings 59102 | (406) 655-1007 |
| Motorola 4603 Alkali Creek Rd, Billings 59106 | (406) 245-3309 |
| Industrial Communications 201 Erie Dr, Billings 59101 | (406) 259-1212 |
| Link Communications Inc 1035 Cerise Rd, Billings 59101 | (406) 245-5002 |