... memory, LED display, one key return.6. supports single sound channel, dual sound channel and stereo channel.7. It contains a range ... :434~850 MHzDemodulate modeCOFDM(16QAM,64QAM,QPSK)Input impedanceGuard Interval75Ω (F)1/4,1/8,1/16,1/32Input levelWithin the ...