Motorola IC-T81E, IC-T81A service manual Receiver, Band, Wfm, Except spurious points typical values

M RECEIVER

• Receiver system	: Double-conversion superheterodyne
• Intermediate frequency	: 1st	69.45 MHz (13.35 MHz: WFM)
	2nd	450 kHz
• Sensitivity*	: (except spurious points; typical values)
		Band	FM	AM	WFM
		50 MHz	0.18 µV	0.56 µV	–
		144 MHz	0.18 µV	–	–
		440 MHz	0.18 µV	–	–
	1200 MHz		0.25 µV	–	–
		91.5 MHz	–	–	2.0 µV

*FM and WFM are measured at 12 dB SINAD, AM is measured at 10 dB S/N.

• Squelch sensitivity	: 50, 144, 440 MHz	Less than 0.18 µV (Threshold)
	1200 MHz	Less than 0.25 µV (Threshold)
	AM (50 MHz only)	Less than 0.56 µV (Threshold)
	WFM	Less than 5.6 µV (Threshold)
• Selectivity (except WFM)	: More than 15 kHz/–6 dB
	Less than 30 kHz/–60 dB
• Spurious and image rejection ratio	: 50, 144 MHz	More than 60 dB
	440 MHz	More than 50 dB
	1200 MHz	More than 38 dB
	(except half IF, 2nd image, 50 MHz band IF and WFM)
• Audio output power	: 250 mW typical at 10 % distortion with an 8 Ω load

All stated specifications are subject to change without notice or obligation.

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