Welcome to FM radio as it looked in 1947.
This is a vintage Pilotuner FM tuner, made by the Pilot Radio Corp., of Long Island City, N.Y. Back in the day, you'd hook this up to the phono input of your existing "standard" radio or console to enjoy the exciting full-fidelity world of frequency modulation broadcasting.
As such this vintage Model T-601 might be called the granddaddy of hi-fi tuners for your sound system. And some 67 years on, it doesn't sound bad -- in glorious monophonic sound with none of the bells and whistles of modern FM gear, but not bad at all considering.
SO . . . if this awakens your inner audio geek, here's a video of my mono hi-fi setup -- an 1957-vintage Realistic FM tuner and amplifier pair, along with a Zenith stereo record changer (outfitted with a modern magnetic cartridge) which has seen better days and likely will be replaced soon . . . and the vintage 1947 Pilotuner I just found via eBay. The Pilotuner is what's playing here, with only a length of wire for an antenna.
The speaker , which you've seen (and heard) before here on the blog is a newly built Gough speaker enclosure from the original 1960 plans and outfitted with a 1962-ish Electro-Voice "Wolverine" 8-inch triaxial driver.
Eventually, the Pilotuner will live in our bedroom, paired with a 1951 (or thereabouts) Bell amp and a 12-inch Electro-Voice Wolverine speaker kludged into a vintage Wharfedale speaker cabinet.
No, my geekery knows no bounds. I have a loving and tolerant wife, thanks be to God.