Wal-Mart, Amazon.com, Best Buy and The Home Depot are some stores that have digital-to-analog television converter boxes available, as of 2015. Several different manufacturers' models are available with a variety of features and pricing, but the primary capabilities and functions are similar for all of the units.
Wal-Mart and Amazon.com have many different digital converter boxes available from manufacturers, including Ematic, Homeworx, iView, Mediasonic and Nutek. The units available typically cost between $25 and $50.
Best Buy stocks the Insignia NS-DXA2 converter box that is compatible with most analog TVs, and The Home Depot sells the UpStar HD DVB-T2, which also offers HDMI output to record programs in high definition.