controller disk memory module server building construction curve glass light mirror modern sky structure transparent bios chips component computer detail detailed digital element fan hardware antenna communication dish dth modulation network radio receiver signal transmission tv wireless auto car drive roof send transmit travel vehicle architecture box Compartment experiment future lab locker object sea rig shuttle space space lab spaceship storage store the future tube tunnel underwater access AM-broadcast-band AM-radio amplitude-modulation (AM) antique broadcast broadcasting circuitry communicating console-tube-radio floor-standing frequencies frequency-range front- faceplate high-frequency (HF) information informative long-wave (LW) longwave medium-frequency (MF) medium-wave (MW) multiband-radio radio-bands radio-frequencies radio-waves range-of-frequencies short-wave (SW) tubes valves vintage waveband wavelength world-access worldwide deteriorating dirty disused inside neglected parts weathered complex connections wiring