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Last modified 2023-08-30

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RadioShack Pro-404 (20-404)

A picture of RadioShack Pro-404 (20-404)

SPECIFICATIONS

GENERAL
Type:HF/VHF/UHF receiver/scanner
Frequency range: 29-54 / 108-174 / 380-512 MHz (USA)
Tuning steps:5 / 12.5 KHz (Depending on band segment)
Frequency stability:? ppm
Mode:AM / FM
Channels / memory management: 200 regular in 10 banks @ up to 40 channels per second
1 priority
5 service search banks
7 NOAA weather channels
1 Skywarn (Channel 200)
Power supply:4.8-6 VDC (Four R6 / AA alkaline or rechargeable batteries)
or 9 VDC external
Current drain / power consumption:45 mA (Squelched)
Antenna impedance / connector:50 ohm / BNC
Dimensions (W*H*D):63*145*40 mm (2.38*5.69*1.56")
Weight:220 g (7.8 oz)
Other features: Weather alert, SAME/FIPS. Signal Stalker II.
Data cloning. PC programmable.




RECEIVER SECTION
Receiver system: Doube conversion superheterodyne
1st IF: 10.7 MHz
2nd IF: 455 KHz
Sensitivity: AM (20 dB S+N/N)
108-137 MHz: 1 uV
FM (20 dB S+N/N)
29-54 MHz: 0.5 uV
137-174 MHz: 0.5 uV
380-512 MHz: 0.7 uV
Selectivity:16 KHz (-6 dB)
34 KHz (-50 dB)
Image rejection:
AF output power / speaker:180 mW at 10% distortion / 8 ohm
External speaker connector:3.5 mm




MISCELLANEOUS
Manufactured:China (By GRE), 2009-201x (Discontinued)
Additional info:
Related documents:User manual (817 KB)
Modifications and fixes:
Reviews:
Options / Accessories:
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