AKG Acoustics PT 81, PR 81, HT 81 manual Part VI Appendix, Specifications

PART VI - APPENDIX VI

2 Specifications

	HT 81	PT 81		PR 81
Carrier frequency range	710 to 860.9 MHz	710 to 860.9 MHz		710 to 860.9 MHz
Modulation	FM	FM		FM
Audio bandwidth	50 to 20,000 Hz	50 to 20,000 Hz		50 to 20,000 Hz
Frequency stability (-10°C to
+50°C)	±10 ppm	±10 ppm		±10 ppm
Rated deviation	30 kHz	30 kHz		-
T.H.D. at 1 kHz	<0.5%	<0.5%		<0.8%
Compander	Yes	Yes		Yes
Signal/noise ratio	typ. 50 dB(A)	typ. 50 dB(A)		>108 dB(A)
RF output	10 mW	10 mW		-
Current consumption	150 mA typ.	180 mA typ.		-
Power requirement	2 x 1.5 V AA size	2 x 1.5 V AA size		2 x 1.5 V AA size
	batteries	batteries		batteries
Battery life	>12 hours	>10 hours		>6 hours
Audio input level for rated
deviation	350 mV/1 kHz	1400 mV/1 kHz	-
Input impedance	220 kΩ	220 kΩ //320 pF		-
Condenser mic power supply	-	6 V/6.8 kΩ (pin 3)		-
Audio outputs	-	-		Unbal. LINE (pin 2):
				-6 dBm (600 Ω )
Headphone output:				Pin 3: 30 mW typ.
				(16 to 100 Ω )
Size (WxDxH)	length: 240 mm (9.4 in.)	92 x 65 x 20 mm		92 x 65 x 20 mm
	dia.: 36 mm (1.4 in.)	(3.6 x 2.6 x 0.8 in.)		(3.6 x 2.6 x 0.8 in.)
Net weight	245 g (8.7 oz.)	76 g (2.7 oz.)		80 g (2.8 oz.)

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