Steve, you're pretty close.
It's a military Hammarlund wideband radio receiver. There used to be Department of Defense and CIA listening posts all over the world, tuning in to the airwaves for anything of value. (I'll neither confirm nor deny that those listening posts still exist) That radio was one of the survivors when the listening posts went to quartz-locked semiconductor equipment. I was ordered to "dispose of it" some years ago. So I did.
I'm a sucker for vacuum tube electronics, my dad brought me up building radios and amplifiers, and he continues to this day to restore and repair old radio sets and audio equipment, from Victrolas and Atwater-Kents to Grundigs and Fisher amplifiers. That old Hickok oscilloscope and aforementioned Hammarlund military receiver are a couple that he helped me restore to perfect working condition, in his two-story inventor's workshop converted from an old barn. Upstairs in that workshop, he's got one of the biggest collections of NOS vacuum tubes this side of the Mississippi river. The Hammarlund has no less than 28 tubes, trust me, I've handled them all, and replaced a bunch of them.
They're now part of the Gewehr98 evil laboratory, combining a computer lab, reloading room, radio shack, weather station, ammo dump, and esoteric gun collection. As soon as I get a smidgen more organized, and get all those ammo cans up off the floor, the Hammarlund, it's speaker panel (seen on the floor), one of the oscilloscopes, large UPS, laser printer, and one of my file servers are going into an industrial rack mount. Then it'll be time to tackle the mess that is my reloading bench!
Preacherman, if you haven't said so already, do you have the SKU number from the box on that WalMart shelf unit? It would make my search go a little easier.