Sennheiser Microphone, Freeport Specifications of the freePORT systems, System characteristics

Specifications of the freePORT systems

System characteristics

Transmission/receiving	4 UHF transmission/receiving frequencies
frequencies	Range A:	719 to 721 MHz
		(719.15 – 719.75 – 720.15 – 720.85 MHz)
	Range C :	742.5 to 744.5 MHz
		(742.65 – 743.35 – 743.85 – 744.45 MHz)
	Range E:	863 to 865 MHz (863.1 – 863.7 – 864.1 – 864.9 MHz)
Switching bandwidth	2 MHz
Signal-to-noise ratio	> 95 dB(A)
THD (1 kHz)	< 1 %
Temperature range	–10 bis +45 °C / 95 relative humidity

Individual components

	EM 1	SK 2	SKM 3
	receiver	bodypack transmitter	radio microphone
Power supply	12V DCNOM/100 mA	9 V PP3 battery	9 V PP3 battery
Operating time	–	approx. 10 hrs	approx. 10 hrs
(with alkaline battery)
Frequency response
	–	60...16,000 Hz ± 3 dB	80...16,000 Hz ± 3 dB
RF output power (-3 dB)	–	10 mW	10 mW
AF output voltage		–	–
¼’’ (6.3 mm) jack socket
(unbal.):	max. +10 dBu
XLR socket (balanced):	max. +16 dBu
Dimensions in mm	approx. 35 x 213 x 98	approx. 60 x 100 x 30	approx. 285;
		(with belt clip)	∅ approx . 35 x 50
Weight	approx. 570 g	approx. 90 g	approx. 210 g
Transducer principle	–	–	dynamic
Pick-up pattern	–	–	cardioid

ME 2 clip-on microphone

Transducer principle Pick-up pattern

pre-polarized condenser

omni-directional

Type approval

EU	see page 51
USA	FCC - Part 74.861 grant of eqipment authorization DMOH1FPXD und
	DMOB1FPXD
Canada	RSS - 123 with authorization IC: 2099A-FPSKMEM und IC: 2099A-FPSK

Connector assignment

EM 1:	EM 1:	EM 1:		EM 1:	SK 2:
¼’’ (6.3 mm) stereo	¼’’ (6.3 mm) mono	XLR-3F connector,		DC connector for	3.5 mm jack plug
jack plug,unbalanced jack plug,unbalanced balanced				power supply
		+	2 1		NC/GND
			3
NC/GN D					Instr./MIC

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