R-4/R-4TB+CM-501*4 Condenser...
 Made in Taiwan
 Frequency Preparation of R-4: PLL Synthesized Control
 Carrier Frequency Range of R-4: UHF 470 to 960 MHz
 Bandwidth of R-4TB: 108MHz Wideband
 Polar Pattern of CM-501: Cardioid
 Sensitivity of CM-501 (at 1KHz): -60±3 dB* (1mV)*0dB=1V/μbar
 CM-5