| Business | Phone |
| Arc-Amateur Radio Sales 115 S Hamilton Rd, Columbus 43213 | (614) 861-7811 |
| B & C Communications 1330 Stimmel Rd, Columbus 43223 | (614) 276-5552 |
| Bearcom 1260 W Mound St, Columbus 43223 | (614) 221-4700 |
| Comtech Inc 1417 Oakland Park Ave, Columbus 43224 | (614) 267-2585 |
| Pinnacle Towers Inc 1000 Urlin Ave, Columbus 43212 | (614) 486-5061 |
| Electrocomm 2967 Switzer Ave, Columbus 43219 | (614) 257-0544 |
| Hall Electronics Inc 815 E Hudson St, Columbus 43211 | (614) 261-8871 |