Radio Shack PRO-79 Specifications, IF Interference Ratio 10.7 MHz, Audio Output Power 10% THD

SPECIFICATIONS

Frequency Coverage (MHz):
10 Meter Amateur Radio			29–30 (in 5 kHz steps)
VHF Lo			30–50 (in 5 kHz steps)
6 Meter Amateur Radio			50–54 (in 5 kHz steps)
Aircraft	108–136.9875 (in 12.5 kHz steps)
Government			137–144 (in 5 kHz steps)
2 Meter Amateur Radio			144–148 (in 5 kHz steps)
VHF Hi			148–174 (in 5 kHz steps)
Amateur Radio/Government		380–450 (in 12.5 kHz steps)
UHF Standard		450–470 (in 12.5 kHz steps)
UHF “T”		470–512 (in 12.5 kHz steps)
Channels of Operation	200 channels/20 monitor memories
Sensitivity (20 dB S/N):
29–54 MHz			0.5 ∝V
108–136.9875 MHz			1.0 ∝V
137–174 MHz			0.5 ∝V
380–512 MHz			0.7 ∝V
Spurious Rejection (FM @154 MHz)			............................... 50 dB
Selectivity:
±10 kHz			–6 dB
±18 kHz			–50 dB
Search Speed			Up to 50 Steps/Sec
Scan Speed			Up to 25 Channels/Sec
Delay Time			2 Seconds
IF Frequencies:
1st IF			10.7 MHz
2nd IF			455 kHz
IF Interference Ratio (10.7 MHz)			70 dB at 150 MHz
Squelch Sensitivity:
Threshold			Less than 0.5 ∝V
Tight (FM)			(S + N)/N 25 dB
Tight (AM)			(S + N)/N 20 dB
Antenna Impedance			50 Ohms
Audio Output Power (10% THD)			180 mW Nominal
Built-In Speaker		13/8 Inches (36 mm), 8 Ohms
Operating Temperature			14° to 140° F
			(–10°to 60° C)

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