AKG Acoustics WMS 81, WMS 61 manual Specifications, Wms

11. Specifications

11.1. WMS 61

	HT 61		PT 61	SR 61
Carrier frequency		138 to 142 MHz/169 to 250 MHz
Modulation			FM
Audio bandwidth			50 to 20,000 Hz
Frequency stability (-10°C to +50°C)	±10 ppm
Rated deviation	30 kHz (22.5 kHz AM)
T.H.D. at 1 kHz		<0.8%		<0.5%
Compander			Yes
Signal/noise ratio	typ. 50 dB(A)			>100 dB(A)
Limiter		Yes
RF output		10 mW
Current consumption	typ. 150 mA		170 mA	220 mA
Power requirement	2x1.5 V AA size batteries			120/230 V AC, 50/60 Hz
Battery life	>12 hours		>10 hours
Input sensitivity				typ. -95 dBm
Audio input level for rated deviation	350 mV/1 kHz		1400 mV/1 kHz
Input impedance	220 kΩ		220 kΩ//660 pF
Condenser microphone power supply			6 V/6,8 kΩ on pin 3
Squelch threshold				-95 dBm (fixed)
Pilot tone	32.678 kHz		32.678 kHz
Audio output				balanced XLR: switchable be
				tween microphone and line
				levels; typ. 30 dB
				unbalanced XLR: 6 dBm
				unbalanced 1/4” jack: 0 dBm
Size (WxDxH)	240 x 36 dia. mm (9.4 x 1.4 in.)		92 x 65 x 20 mm (3.6 x 2.6 x 0.8 in.)	210 x 170 x 42 mm (8.3 x 6.7 x 1.7 in.)
Net weight	245 g (8.7 oz.)		76 g (2.7 oz.)	470 g (16.6 oz.)

11.2. WMS 81

	HT 81		PT 81	SR 81
Carrier frequency			710 to 869 MHz
Modulation			FM
Audio bandwidth			50 to 20,000 Hz
Frequency stability (-10°C to +50°C)	±10 ppm
Rated deviation		30 kHz
T.H.D. at 1 kHz		<0.5%		<0.4%
Compander			Yes
Signal/noise ratio	typ. 50 dB(A)			>100 dB(A)
Limiter		Yes
RF output		10 mW
Current consumption	typ. 170 mA		180 mA	240 mA
Power requirement	2x1.5 V AA size batteries			120/230 V AC, 50/60 Hz
Battery life	>10 hours		>8 hours
Input sensitivity				typ. -95 dBm
Audio input level for rated deviation	350 mV/1 kHz		1400 mV/1 kHz
Input impedance	220 kΩ		220 kΩ//320 pF
Condenser microphone power supply			6 V/6,8 kΩ on pin 3
Pilot tone	32.678 kHz		32.678 kHz
Squelch threshold				-95 dBm (fixed)
Audio output				balanced XLR: switchable be
				tween microphone and line
				levels; typ. 30 dB
				unbalanced XLR: 6 dBm
				unbalanced 1/4” jack: 0 dBm
Size (WxDxH)	240 x 36 dia. mm (9.4 x 1.4 in.)		92 x 65 x 20 mm (3.6 x 2.6 x 0.8 in.)	210 x 170 x 42 mm (8.3 x 6.7 x 1.7 in.)
Net weight	245 g (8.7 oz.)		76 g (2.7 oz.)	470 g (16.6 oz.)

This product conforms to ETS 300.422 and ETS 300.445 as well as Parts 15 (receiver), 74, and 90 (traveler) of the FCC Rules.