RadioShack, online at radioshack.com, save money on hot items when shopping on RadioShack when applying our coupons, promo codes during checkout. Trust us, these coupons are good. Make the best of our RadioShack promo codes to get 15% OFF. All discounts are totally free to use. The first RadioShack opened its doors on a bustling Boston street in 1921, when Theodore and Milton Deutschmann started selling parts to ship radio officers and the growing number of ham radio operators. More than 90 years and 4,700 North American store openings later, the company has broadened its stock of electronics but still holds true to its original mission: providing exceptional service in an inviting, small-store setting. A RadioShack coupon can even be used toward RadioShack-branded gear and materials, such as cables and LEDs.