Radio Shack 20-405 User Manual - Dit
Ad
dit
io
na
l I
nfo
148.0125-150.7875MHz........................................................... (12.5kHzsteps)/FM
150.8-161.995MHz........................................................................ (5kHzsteps)/FM
162-174MHz............................................................................. (12.5kHzsteps)/FM
380-512MHz............................................................................. (12.5kHzsteps)/FM
Sensitivity (S+N)/N 20 dB
29-54MHz........................................................................................................ 0.5uV
87.3-107.9MHz((S+N)/N30dB)..................................................................... 1.0uV
108-136.99166MHz......................................................................................... 1.0uV
137-174MHz.................................................................................................... 0.5uV
380-512MHz.................................................................................................... 0.7uV
SpuriousRejection(FM@154MHz)................................................................ 50dB
Selectivity
±8kHz/±17kHz(FM/AM)....................................................................... -6dB/-50dB
±80kHz/±180kHz(WFM)........................................................................ -6dB/-50dB
SearchSpeed............................................................................. Upto80Steps/Sec
ScanSpeed..........................................................................Upto40Channels/Sec
DelayTime................................................................................................ 2Seconds
IF Frequencies
1stIF............................................................................................................10.7MHz
2ndIF..............................................................................................................455kHz
IFInterferenceRatio(10.7MHz)..................................................70dBat154MHz
Squelch Sensitivity
Threshold(FM/AM)........................................................................ Lessthan0.5uV
Threshold(WFM)............................................................................ Lessthan1.0uV
Tight(FM).........................................................................................(S+N)/N25dB
Tight(WFM).......................................................................................(S+N)/N60dB
Tight(AM)..........................................................................................(S+N)/N20dB
AntennaImpedance....................................................................................50Ohms
AudioOutputPower(10%THD)......................................................0.7WNominal
Built-InSpeaker............................................................... 3Inches(77mm),8Ohms
OperatingTemperature....................................................32°to110°F(0°to43°C)
PowerRequirements...................................................... 9VACAdapter(supplied)
................................................................................... 9VDCAdapter(notsupplied)
Dimensions(HWD)...................................................................... 8¼x6
Êx2ÈIn
.....................................................................................................(210x175x60mm)
Weight(withoutantenna).................................................................. 24.7oz(700g)
Specificationsanddepictionsaresubjecttochangeandimprovementwithoutnotice.
Actualproductmayvaryfromtheimagesfoundinthisdocument.