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Some frequencies require FCC or Industry Canada license. Stop complicating communications. Simplify them with the PowerCom Plus II Radio Headset from Peltor. For more information on the smarter way in two-way visit call 1-800-225-9038 or e-mail peltor_communications@aearo.com OCTAVE BAND ATTENUATION DATA (dB) - ANSI S3.19 TEST DATA Model NRR CSA Class: Freq 125 250 500 1000 2000 3150 4000 6300 8000 MT53H7A4720 Headband model 25 dB B Mean sd 18.6 4.3 23.6 3.1 31.8 2.8 36.6 2.2 31.2 2.4 36.4 3.6 39.5 2.7 38.3 3.6 39.0 2.6 MT53H7B4720 Neckband model 25 dB A Mean sd 19.1 2.6 22.3 2.3 31.7 2.7 34.7 2.4 33.5 2.9 37.9 2.5 40.8 3.1 38.8 2.5 40.4 2.9 MT53H7P3E4720 Hardhat mount model 24 dB A Mean sd 18.1 3.1 21.7 2.9 31.5 2.8 35.5 2.7 30.7 2.7 36.8 2.7 39.7 2.5 38.6 2.1 39.0 2.8 ACCESSORIES FL6CS Cell phone cable, 2.5 mm mini stereo plug FL6CT Receive only patch cord for entertainment devices, 3.5mm stereo plug TK56 Remote ring finger Push-to-talk button, 48" straight cable (shown below) M995 Boom microphone wind sock FL5503 Remote lapel PTT, 12" straight cable MT90-01 Throat microphone GENERAL SPECIFICATIONS UHF Channel Capacity 30 Channels Weight (Without Batteries)^^^^^^^^ 14 oz/400 g Battery life LOW power @ 5/5/90 duty cycle using 2 standard high capacity AA batteries 36 hours Battery life HI power @ 5/5/90 duty cycle using 2 standard high capacity AA batteries 30 hours FCC description To Be Determined 1C description To Be Determined Approvals/ratings Intrinsically Safe ** TRANSMITTER SPECIFICATION UHF Frequency range 430-470 MHz Channel Spacing 12.5/25 kHz Coded Squelch Settings 83 Digital, 38 analogue Channel raster 6.25/12.5/25 kHz Freq stability +/- 2ppm Power 10 mW/20 mW/200 mW Modulation Limiting 12.5 kHz +/- 2.5 kHz Modulation Limiting 25 kHz +/- 5 kHz FM Hum & Noise 12.5 kHz -34 dB FM Hum & Noise 25 kHz -40 dB Radiated emissions <1 GHz < 0.25 uW Radiated emissions, 1-4 GHz < 1 uW Adjacent channel power, 12.5 kHz -60 dBc Adjacent channel power, 25 kHz -70 dBc Audio response 300-3000 Hz +/- 2 dB Audio Distortion 3% FM Modulation 16K0F3E, 8K50F3E RECEIVER SPECIFICATION UHF Frequency range 430-470 MHz Channel Spacing 12.5/25 kHz Coded Squelch Settings 83 Digital, 38 analogue Channel raster 6.25/12.5/25 kHz Freq stability +/- 1ppm Sensitivity (12 dB SINAD) -122 dBm typical Intermodulation 70 dB Adjacent channel selectivity 12.5 kHz 60 dB Adjacent channel selectivity 25 kHz 70 dB Spurious rejection 70 dB Rated audio 10 mW Audio distortion 3% Hum and noise 12.5 kHz -35 dB Hum and noise 25 kHz -35 dB Radiated spurious emission <1 GHz < 2 nW 1 Radiated spurious emission 1-4 GHz < 20 nW "Factory Mutual (FM) Class I Groups C & D; Class II, Groups, E, F & G; Class III, Canadian Standards Association (CSA) Class I Groups A, B, C & D; Class II, Group G; Class II ...