Radio Shack CB Walkie Talkie TRC-235
actory-Installed Crystals - let you immediately begin using your TRC-235 on Channel 14. Three-Channel Operation - comes with Channel 14 crystals installed, but lets you install optional crystals so you can operate the TRC-235 on any two of the other 39 available CB channels. Built-In Modulation Limiter Circuit - automatically adjusts to a variety of voice levels to ensure a clear transmission. Crystal-Controlled Circuitry - provides accurate and stable channel selection. Adjustable Squelch - helps to eliminate noise between transmissions. Telescoping Antenna - provides excellent reception and transmission. External Antenna Jack - lets you connect an external antenna (not supplied) to your TRC-235 for mobile or base-station use, or to extend the TRC-235's range. Battery Test Button and Battery Indicator - lets you check the batteries condition. Power/Charging Jack - lets you power your TRC-235 from an AC or DC power source, so you can use the TRC-235 without draining the batteries. And, lets you charge nickel-cadmium batteries without removing them from the TRC-235.