Amazon.com: Tecsun PL-660 Portable AM FM LW Air Shortwave World Band Radio with Single Side Band : Electronics
File:Vintage Continental Transistor Radio, Model TR-660, AM Band, 6 Transistors, Continental Merchandise Company, Made In Okinawa (Japan), Circa 1963 (45365151335).jpg - Wikimedia Commons
Realistic Portavision 12-660 AM/FM/TV Radio Vintage Tested & Works | eBay
Distorted local FM audio on Brad's Tecsun PL-660 | The SWLing Post
TECSUN PL-660 Radio PLL SSB VHF AIR Band Radio Receiver FM/MW/SW/LW Radio Multiband Dual Conversion TECSUN PL660 - AliExpress