- Seaport Communications
- Secom Communications
- Secom Communications
- Secom Systems Inc
- Segno Communications Inc
- Select Communications
- Select Communications
- Service Center
- Service Communication-Acadiana
- Service Radio Rentals
- Service Shop
- SET Communications Inc
- Setcom Corp
- Sey-Comm Svc Co
- Shaffer Communications Inc
- Shank Communications
- Shaw Communications Inc
- Shearer Communications Inc
- Sheets Communications
- Shepard's Commercial Radio
- Shieldmark
- Shipman Communications
- Shreveport Communications
- Shropshire's CB Sales & Svc
- Sierra Communications
- Sierra Electronics
- Signal Communications
- Signal Communications Inc
- Signal Communications LLC
- Signal Intelligence
- Signature Wireless Group
- Silke Communication
- Silver Creek Technologies
- Silverado Avionics
- Simple Sounds Inc
- Sinclair Technologies Inc
- Sine Communications Inc
- Siskiyou Communications
- Sites Unlimited
- Six Rivers Communications
- Skitonics LLC
- Skycom
- Skycom
- Skyline Communications
- Skyline Repeaters
- Skywave Communications Co
- Skyworks Solutions Inc
- Slater Communications Inc
- SLC Disributing
- Smith Electronics
- Smith Electronics
- Smith Two-Way Radio Inc
- SMR Communications
- Snyder Radio Svc
- Socorro Mobile Communications
- Sola Communications
- Sola Communications Inc Intl
- Solar Communication
- Solar Communication
- Sou-Tex Communications
- Sound Advice
- Sound Systems Inc
- South Comm
- South Comm Inc
- South Eastern Communications
- South Georgia Digital Assoc
- South Lyon Electronics
- South Lyon Electronics
- South Plains Communications
- South Plains Communications
- South Sales Communications
- South Sales Communications
- South Tex Communications
- South Texas Communications
- South Texas Communications
- South Texas Communications Inc
- Southeastern Wireless Comms
- Southern Hi-Tec Communications
- Southern Linc
- Southern Maine Communications
- Southern Maryland Comms Inc
- Southern Measurement & Comms
- Southland Communications Inc
- Southland Radio
- Southwest Communications
- Southwest Communications Svc
- Southwestern Mobile Comms
- Sparkgap Electronics
- Sparkgap Electronics
- Spec Precision Optics
- Specialized Communication Inc
- Specialized Communications
- Specialized Radio Systems
- Specialty Communications
- Spectrum Communications
- Spectrum Communications LLC
- Spectrum Electronics & Hobbies
- Spectrum License Consultants
- Spectrum License Consultants
- Spectrum Radio Svc
- Spectrum Resources
- Spectrum Resources Towers
- Spectrum Wireless
- Spi Ro Mfg
- Sprenger Radio Communications
- Springfield Radio Comm Inc
- Squaw Mountain Communication
- St Louis Electronics
- St Louis Electronics
- St Louis Electronics
- Staley Communications
- Staley Communications Inc
- Staley Communications Inc
- Staley Technologies
- Staley Technologies Inc
- Stan's Communications Inc
- Stanek Electronics
- Starcomm Communications
- Starkville Communications
- State Electronics Co
- State Radio Communication
- State Systems Radio Inc
- State Wide Communications
- State Wide Svc Corp
- State-The Art Communications
- Stateline Communications
- Sterling Associates Inc
- Sterling Communications
- Steve Electronics
- Stevens Communications Inc
- Stevens Marine Radio
- Stevens Wireless
- Stine Electronics
- Storms Sirens Inc
- Stradacom Inc
- STS Communications Inc
- Stuart Electronics
- Sullivan Communications Inc
- Sunflower Communications
- Sunny Communications
- Super Radio & Electronics
- Superior Communications Inc
- Superior Communications Inc
- Supreme Radio Communications
- Supreme Radio Communications
- Surius Satellite Radio
- Switzer Communications Inc
- Symbols Technology
- Systems Communication Corp
- Systems Communication Corp
- Systems Design Technology LLC
- T & K Communication Systems
- T & S Electronics
- T & W Electronics Inc
- T A Radio Communications
- T D Miller III Mobile Comms
- T D's Radio-TV Communications
- TAB Electronics Inc
- Tac Tec
- TAC-2 Communications
- TAC-9 Radio
- Tac-Comm
- Tactical Command
- Tactical Communications Inc
- Tada Communications
- Tag Master Inc
- Tatarka Technologies Inc
- TBS Electronics Inc
- TCS Communications
- TCS Radio
- TCS Wireless
- Teal Communications Inc
- Team Electronics
- Team One Communications
- Technical Electronics Inc
- Technical Sales
- Technology Group
- Tecnet International Inc
- Tecomsys
- Ted Kingston Inc
- TEDI
- Tek Tron
- Tek Tron Corp
- Tekk Inc
- Tel-Tech Communications Inc
- Tel-Tech Communications Inc
- Tele-Flex Analytical
- Tele-Path Corp
- Tele-Rad Inc
- Tele-Rad Inc
- Tele-Tronix Communications
- Telebeeper Of New Mexico Inc
- Telecom Communications Inc
- Telecomm Engineering Inc
- Telerad Communications
- Teletec Communications
- Teletec Corp
- Teletouch
- Teletouch Communications Inc
- Teletouch Communications Inc
- Teletouch Communications Inc
- Teletrac Inc
- Teletrol Inc
- Teletrol Inc
- Telmobile Inc
- Telos Systems Omnia Audio
- Teltronics Inc
- Teltronics Inc
- Teltronics Inc
- Temco Communications Inc
- Ten Four Technology Group Inc
- Ten-FOUR Cb Store Inc
- Ten-Four Communications
- Ten-Two Communications
- Tenfore Communication
- Terret Communication
- Terrys Two Way
- TESSCO Technologies Inc
- Texas 2 Way
- Texas Communications
- Texas Communications
- TFM Comm Inc
- TFMCOMM
- TFR Electronics Inc
- Third Mobile Communications
- Third Mobile Of Central Ny Inc
- Third Mobile Of Central Ny Inc
- Thomas Destin Communications
- Thompson Radio Svc
- Three Rivers Communications
- Three-Way Communications Inc
- Tidewater Communications Corp
- Timberline Electronics
- Timberline Electronics
- Time Warner Communications
- TMC Communications & Elctrnc
- Tom Ferri Co
- Tom's Radio & TV
- Tom's Two Way Radio Clinic
- Tomar Electronics
- Tomba Communications & Elec
- Tomba Communications & Elect
- Tomba Communications & Elect
- Tomtronics
- Top Communications
- Torg's Electronics
- Total Com Inc
- Total Com Inc
- Total Radio
- Total Radio Inc
- Totalcom Inc
- Tower Communications Co
- Tower Communications Co
- Tower Economics Co Inc
- Tower Erectors Co
- Towers Of Texas
- Towers Of Texas
- Towers Of Texas
- Towers Of Texas
- Towers Of Texas
- Towers Of Texas
- Towers Of Texas
- Towers Of Texas
- Track Scan
- Trackside Communications Inc
- Trackside Communications Inc
- Trans Com Corp
- Trans Core
- Trans Core
- Trans Core
- Trans Core
- Trans Core Inc
- Transmek Communications
- Treaty Technology
- Trg Communications
- Tri Com
- Tri County Communications
- Tri State Commications Inc
- Tri State Communications
- Tri-Co Communications Inc
- Tri-Co Communications Inc
- Tri-Co Communications Inc
- Tri-Co Communications Inc
- Tri-Co Communications Inc
- Tri-Com Svc
- Tri-County Communications
- Tri-County Communications
- Tri-County Communications Inc
- Tri-County Communications Svc
- Tri-County Radio Svc
- Tri-Parish Radio Communication
- Tri-State Audio
- Tri-State Communications Inc
- Tri-State Electronics Inc
- Trident Micro Systems
- Trintel Communications
- Triple A Communications
- Triple C Communications Inc
- Troche Communications
- TRS Wireless Inc