Radio Shack 20-422 TV Antenna User Manual


 
30
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
µ
V
108–136.975 MHz ..................................................................................... 1.8
µ
V
137–174 MHz ............................................................................................ 0.6
µ
V
406–512 MHz ............................................................................................ 0.6
µ
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
20-422.fm Page 30 Friday, January 7, 2000 12:54 PM