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Desktop VHF/UHF Scanner / receiver
Handheld VHF/UHF Scanner / receiver
Mobile VHF Transceiver

General

HAM bands ? None  2m 
Freq. stability ? ? ?
Tuning steps 5 / 12.5 kHz ? 5 / 10 / 12.5 / 15 / 20 / 25 kHz

Receiver

RX-range 29-54 / 137-174 / 406-512 MHz 148-174 / 450-470 MHz 136-174 MHz
Modulations FM   FM   FM  
Sensitivity 29 - 54 MHz: 0.5 µV
137 - 174 MHz: 0.8 µV
406 - 512 MHz: 0.6 µV
(20 dB S/N with 3 kHz deviation for FM)
? 0.22 µV (10 dB S/N)
Selectivity +/- 9 kHz (-6 dB)
+/- 15 kHz (-50 dB)
? 70 dB
Filters ? ? ?
Receiver system Double conversion superheterodyne XTAL ?
IF-freqs. 1st: 10.85 MHz
2nd: 450 kHz
? ?
Image rejection ? ? > 60 dB
Audio output 850 mW max ? 2.5 W @ 8 ohm

Transmitter

TX-range - - 144-148 MHz
(142-149.885 MHz)
Modulations - - FM  
RF-output ? ? 10 / 25 W

Connections

Antenna - - SO-239
Impedance 50Ω ? 50Ω
Other - - -

Electrical

Power req. 10V DC or mains ? 12-16 V DC
Current RX ? ? 300-600 mA
TX - - 3-5 A

Physical

Manufactured Between 199x and 199x Between 19xx and 19xx Between 200x and 20xx
Dimensions 235 × 57 × 170 mm
(9.25 × 2.24 × 6.69 in)
? 130 × 32 × 140 mm
(5.12 × 1.26 × 5.51 in)
Weight 538 gr (1.2 lbs) ? 700 gr (1.5 lbs)
Form factor Base Station Handheld Mobile

Other features

Memories 30 channels in 3 bank(s) @ 15 channels/second 4 channels in 1 bank(s) 10 channels in 1 bank(s)
Usage Amateur / Ham radio operators Amateur / Ham radio operators Amateur / Ham radio operators
Features Direct Entry Programmable Scanner ? CTCSS and DTMF
Accessories ? ? ?
MPN 20-415 20-157 RADIOSHACK-/-REALISTIC-HTX-000252