Empfänger R16SCAN FM40/41 Graupner 7054 Highly selective PLL SCAN narrow-band FM superhet receiver with seven servo functions, exploiting SCAN Synthesizer technology. When the SCAN button is pressed, the receiver automatically detects the optimum reception frequency for the desired transmitter signal and stores it. No crystals are required with this receiver. The latest seven-function FM receiver system with superbtransmission quality and ultra-high resolution.