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Last modified 2026-08-08

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RadioShack 21-1811

A picture of RadioShack 21-1811

SPECIFICATIONS

GENERAL
Type:License-free FRS transceiver
Frequency range:462.5625-467.7125 MHz
Channels / tuning steps:14
Frequency stability:2.5 ppm @ -20 to +50°C (-4 to +122°F)
Mode:NFM
Memory channels / management:-
Repeater shift / offset:Simplex only
Power supply:4.8-6 VDC (Four R6 / AA alkaline or rechargeable batteries)
or 9 VDC external (Male barrel jack)
Current drain / power consumption:RX: ? mA
TX: ? mA
Antenna impedance / connector:50 ohm / Non-removable antenna
Dimensions (W*H*D):50*200*35 mm (1.97*4.33*1.38"), including the antenna
Weight:132 g (4.66 oz), without batteries
Other features:CTCSS/PL "Quiet codes". Call tone.




RECEIVER SECTION
Receiver system: Double conversion superheterodyne
1st IF: ? MHz
2nd IF: ? KHz
Sensitivity:0.5 uV (12 dB SINAD)
Squelch sensitivity:
Selectivity:45 dB (Adjacent channel)
Image rejection:
AF output power / speaker:250 mW at 5% distortion / 8 ohm
External speaker connector:TS "Minijack" (3.5 mm)




TRANSMITTER SECTION
RF output power:Less than 500 mW (ERP)
Modulation system:
Max FM deviation (Factory set):±2.5 KHz
Spurious emissions:Better than -? dB
Microphone impedance / connector:? ohm / TRS "Subminijack" (2.5 mm)
Microphone input level:? mV




MISCELLANEOUS
Manufactured:China (Hong Kong), 1999-200x (Discontinued)
Additional info: FCC ID: AAO21-1811

New price 2000 in the US: $99.99
New price 2001 in the US: $99.99
Related documents: User manual (143 KB)
PLL: MB1511
RF driver: 2SC3356
RF final: BLT50
Modifications and fixes:
Reviews:
Options / Accessories:
21-591
21-592
Camo case
Black leather case