Cobra Electronics FRS 225 operating instructions General Specifications

Specifications

I. GENERAL SPECIFICATIONS

A.FREQUENCIES CHANNEL ASSIGNMENT

	CH 1: 462.5625MHz	CH	8: 467.5625MHz
	CH 2: 462.5875MHz	CH	9: 467.5875MHz
	CH 3: 462.6125MHz	CH 10: 467.6125MHz
	CH 4: 462.6375MHz	CH 11: 467.6375MHz
	CH 5: 462.6625MHz	CH 12: 467.6625MHz
	CH 6: 462.6875MHz	CH 13: 467.6875MHz
	CH 7: 462.7125MHz	CH 14: 467.7125MHz
B. RECEIVER
		UNIT		NOMINAL
1.	SENSITIVITY
	FOR 12 DB SINAD	dBm		-119
	FOR CALL SIG. DETECTION	dBm		-121
2.	MAX. AUDIO OUTPUT @10% THD	mW		150
3.	MAX. S/N RATIO @ 1mV RF INPUT	dB		45
4.	SQUELCH
	a) SENSITIVITY	dB m		-121
	b) ATTACK TIME	mS		150
	c) CLOSING TIME	mS		200
5.	AUDIO FREQUENCY RESP.
	@ 300 HZ	dB		-3
	@ 2500 HZ	dB		-10
6.	SIGNAL DISPLACEMENT BW	+/-KHZ		5
7.	ADJACENT CH. REJECTION	dB		55
8.	INTERMODULATION REJECTION	dB		55
9.	SPURIOUS RESPONSE REJECTION	dB		65

Specifications

C. TRANSMITTER
		UNIT	NOMINAL
1.	EFFECTIVE RADIATED POWER	mW	500
2.	CARRIER FREQ. STABILITY	+	500
		_Hz
3.	MODULATION LIMITING	KHz	2.5
4.	CARRIER ATTACK TIME	mS	30
5.	AUDIO FREQUENCY RESPONSE
	@ 300 HZ	dB	-10
	@ 2500 HZ	dB	4
6.	AUDIO DISTORTION	%	3
7.	HUM NOISE	dB	38
8.	TRANSIENT FREQ. BEHAVIOR
	a) TX ON	mS	30
	b) TX OFF	mS	5
D. POWER SUPPLY
1.	BATTERY LIFE (1:1:18 RATIO)	HR	24
2.	BATTERY OPERATING RANGE	V	3.2 - 4.5

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