Radio Shack HTX-242 owner manual Specifications, General, Receiver

Models: HTX-242

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SPECIFICATIONS

General

Frequency Range (Factory)

Transmit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144 – 148 MHz Receive. . . . . . . . . . . . . . . . . . . . . . . . 136.000 – 174.000 MHz Frequency Step . . . . . . . . . . . . . . 5/10/12.5/20/25/50/100 kHz Frequency Stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±10 ppm Antenna Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Ohms Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Ohms Microphone . . . . . . . . . . . . . . . . . Electret Condenser (1.2 kOhms) Operating Temperature . . . . . . . . . . . . . 14 to 140°F (–10 to 60°C)

Dimensions (HWD) . . . . . . . . . . . . . . . . 1 5/8 ⋅ 5 9/16 ⋅ 6 3/16 Inches (42 ⋅ 142 ⋅ 160 mm)

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 13.8 V DC (±15%)

Receiver

Intermediate Frequency

1st IF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.4 MHz 2nd IF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 455 kHz

Sensitivity

12 dB sinad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.25 ∝V 20 dB nq. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.39 ∝V

Squelch Sensitivity

Threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 ∝V Tight. . . . . . . . . . . . . . . . . . . . . . . . . 10 dB above threshhold Spurious Response Attenuation . . . . . . . . . . . . Better than 70 dB Adjacent Channel Rejection . . . . . . . . . . . . . . . Better than 70 dB Modulation Acceptance Bandwidth. . . . . . . . . Better than 7.5 kHz Hum and Noise . . . . . . . . . . . . . . . . . . . . . . . . Better than 40 dB Audio Output Power at 10% THD . . . . . . . . . . . .Better than 2.0 W Audio Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2% Audio Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . –6 dB/Octave Stand-by Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 mA CTCSS Sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.15 ∝V DTMF Squelch Sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . . 0.2 ∝V

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Radio Shack HTX-242 owner manual Specifications, General, Receiver