The $109 DMT335R is a 3.5-inch model that's one of four new Mobile DTV products in RCA's line.

(Credit: RCA)

RCA is back in the portable TV business with a new line of Mobile DTV products that it will release later this year.

In case you don't know what Mobile DTV is, it's a new mobile digital broadcast standard that's designed to allow you to get TV on the go--even in a moving vehicle. The free service has already been rolled out in some test markets and will expand to other regions this year. A handful of standalone Mobile DTV-enabled devices are currently available and certain noteboook computers, tablets, and smartphones are expected to have Mobile DTV chips embedded into them in the future--if the platform takes off.

Here's a look at what RCA has announced:

• 3.5-inch Hybrid Portable Television DMT335R ($109): LED backlit LCD screen, hybrid ATSC or Mobile DTV reception, AC power or up to 4 hours of playback time on rechargeable AA batteries, real-time signal strength indicator, closed captioning capability, easel-back stand, English/Spanish display, and monopole antenna.

• 3.5-inch Hybrid Portable Television DMT336R ($149): Wide-screen, LED backlit LCD screen, hybrid ATSC or Mobile DTV reception, FM radio reception, AC power or up to 4 hours of playback time on internal lithium polymer battery, real-time signal strength indicator, closed captioning capability, easel-back stand, English/Spanish display, and monopole antenna.

• 7-inch Hybrid Portable Television DMT270R ($169): 800x480-pixel high-resolution wide-screen LCD screen featuring 500:1 contrast ratio, hybrid ATSC or Mobile DTV reception, AC power or up to 3 hours of playback time on built-in lithium polymer battery that can recharge while plugged into a wall outlet or auto power source, real-time signal strength indicator, closed captioning capability, easel-back stand, English/Spanish display, and 360-degree adjustable antenna.

• Pocket Mobile DTV Car Tuner Receiver DMT3BR ($119): Features a "discrete" design that is smaller than a deck of cards, hybrid ATSC or Mobile DTV reception, powered by car charger, easy connection to the car infotainment system's audio and video input jacks, remote control, and a monopole antenna.

Check out Molly Wood's First Look video of the new RCA products: