| Business | Phone |
| Analog Research Labs Ltd 21422 N 11th Ave, Phoenix 85027 | (623) 780-1100 |
| Audio-Video Resources 4323 E Cotton Center Blvd, Phoenix 85040 | (602) 643-4391 |
| Communications Specialists Inc 4525 W Indian School Rd, Phoenix 85031 | (602) 233-0000 |
| Firestik Antenna Co 2614 E Adams St, Phoenix 85034 | (602) 273-7151 |