50s 60s 70s antique audio broadcasting communication electronics enterteinment equipment fashioned frequency isolated media music musical nostalgia object off old on radio revival sound Speaker style technology Tuner vintage dutch e-mail Envelope grunge holland jazza letter love letter mail mailing Netherlands paper post post stamp postcard posting return sender stamp stamps white write broadcast electronic furniture key leisure news on air potentiometer receiver retro scope search station tune voice volume wireless appropriate behavior appropriate behaviour black care danger dangers denied not allowed not permitted permission denied prohibited prohibition red risk risks sign signs swimmers swimming warning water access accessibility allocated allocation allowed available awareness blue designated designation direction lettering location official parking parking-area parking-lot parking-sign permission permitted wall byte card card-reader computer connector data digital flash hardware industry information memory micro plastic plug reader slot stick storage technical transfer usb appropriate-behavior appropriate-behaviour disability disabled disabled-parking ground ground-level limited limited-parking paved paving restricted special-parking stonework surface surfaces symbol symbols air-traffic-control aircraft airport architectural architecture aviation command communications control control-tower directions directives flight fly flying height high safety tower tower-signals tower-views tracking traffic visibilty ban banned fishing no-fishing not-allowed not-permitted permission-denied pier waterside adorable beautiful beauty browsing child concentrating concentration cute face female girl infant internet laptop learning looking people playing portrait school small staring unsafe work working young