Radio Shack 20-422 owner manual Specifications

SPECIFICATIONS

Frequency Coverage:
VHF Lo	29.7–50 MHz (in 5 kHz steps)
Amateur Radio	29–29.7 MHz (in 5 kHz steps)
	50–54 MHz (in 5 kHz steps)
	144–148 MHz (in 5 kHz steps)
	420–450 MHz (in 12.5 kHz steps)
Aircraft	108–136.975 MHz (in 12.5 kHz steps)
Government	137–144 MHz (in 5 kHz steps)
	406–420 MHz (in 12.5 kHz steps)
VHF Hi	148–174 MHz (in 5 kHz steps)
UHF	450–470 MHz (in 12.5 kHz steps)
UHF “T”	470 –512 MHz (in 12.5 kHz steps)
Channels of Operation	Any 200 channels in any band combinations
	(20 channels ⋅ 10 banks) and 10 monitor channels
Sensitivity (20 dB S/N with 3 kHz deviation for FM, 60% modulation for AM):
29–54 MHz	0.5 ∝V
108–136.975 MHz	1.8 ∝V
137–174 MHz	0.6 ∝V
406–512 MHz	0.6 ∝V
Selectivity (@162.4 MHz (WX)):
–6 dB	±10 kHz
–50 dB	±16 kHz
Search Speed	20 Steps/Sec.
Scan Speed	20 Channels/Sec.
Priority Sampling	2 Seconds
Delay Time	2 Seconds
IF Frequencies	21.4 MHz and 450 kHz

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