![File:Vintage Crown Transistor Radio, Model TR-400, AM Band, 6 Transistors, Made In Japan, Circa 1959 (14808748822).jpg - Wikimedia Commons File:Vintage Crown Transistor Radio, Model TR-400, AM Band, 6 Transistors, Made In Japan, Circa 1959 (14808748822).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/3/3e/Vintage_Crown_Transistor_Radio%2C_Model_TR-400%2C_AM_Band%2C_6_Transistors%2C_Made_In_Japan%2C_Circa_1959_%2814808748822%29.jpg)
File:Vintage Crown Transistor Radio, Model TR-400, AM Band, 6 Transistors, Made In Japan, Circa 1959 (14808748822).jpg - Wikimedia Commons
![TR400 and TR4X Titan Radio Programming USB Cable TR4PC with software TRSW for programming the TR400 TR4X portable with frequencies and features. : Amazon.in: Sports, Fitness & Outdoors TR400 and TR4X Titan Radio Programming USB Cable TR4PC with software TRSW for programming the TR400 TR4X portable with frequencies and features. : Amazon.in: Sports, Fitness & Outdoors](https://m.media-amazon.com/images/I/61gyCZGNPoL.jpg)
TR400 and TR4X Titan Radio Programming USB Cable TR4PC with software TRSW for programming the TR400 TR4X portable with frequencies and features. : Amazon.in: Sports, Fitness & Outdoors
![Titan Radio TR4SK FBI Headset Earpiece PTT Mic 2 Wire Surveillance for TR400 TR4X HYT 2 Pin Radios : Amazon.in: Sports, Fitness & Outdoors Titan Radio TR4SK FBI Headset Earpiece PTT Mic 2 Wire Surveillance for TR400 TR4X HYT 2 Pin Radios : Amazon.in: Sports, Fitness & Outdoors](https://m.media-amazon.com/images/I/51zEzqcOIIL._AC_UF1000,1000_QL80_.jpg)
Titan Radio TR4SK FBI Headset Earpiece PTT Mic 2 Wire Surveillance for TR400 TR4X HYT 2 Pin Radios : Amazon.in: Sports, Fitness & Outdoors
![JL Audio TR400-CXi Evolution™ TR Series 4" 2-way car speakers — includes 4"x6" adapter plates at Crutchfield JL Audio TR400-CXi Evolution™ TR Series 4" 2-way car speakers — includes 4"x6" adapter plates at Crutchfield](https://images.crutchfieldonline.com/ImageHandler/trim/750/457/products/2007/136/x136TR400CX-f.jpeg)