Radio Shack DX 275 User Manual
  1. Manuals
  2. Brands
  3. Radio Shack Manuals
  4. Radio
  5. DX 275
  6. User manual

Radio Shack DX 275 User Manual

Shortwave
Hide thumbs
Table of Contents

Advertisement

Quick Links

Radio Shack DX 375
Shortwave Radio
User Manual

Advertisement

Table of Contents
loading

Related Manuals for Radio Shack DX 275

Summary of Contents for Radio Shack DX 275

  • Page 1 Radio Shack DX 375 Shortwave Radio User Manual...
  • Page 2 Features DX-375 (200-0212) Your Realistic DX-375 AM/SW/FM-Stereo PLL Synthesized Receiver lets you choose from a wide variety of broadcasts on FM, AM, and SW (shortwave) bands. The 12 international SW bands let you tune in to the news and other programs from such sources as the British Broadcasting Corporation, Radio Cairo, and Radio Moscow, bring the voices of the world to you.

  • Page 3: Locking The Controls

    batteries, standard household AC power (using an optional AC adapter), or DC vehicle battery power (using an optional DC adapter). Tone Control - lets you set the receiver to accentuate high or low frequency sounds. Memory Backup - keeps the programmed stations in your receiver's memory for up to 1 hour without batteries.

  • Page 4: Installation

    Internal Battery Power You can power the receiver with two C batteries. For best performance, we recommend alkaline batteries, such as Radio Shack Cat. No. 23-551. CAUTION: If you disconnect power from the receiver for about 1 hour, all information stored in memory will be lost.

  • Page 5: Using Stereo Headphones

    For private listening, connect optional stereo headphones into the receiver's 1/8-inch jack. This disconnects the receiver's internal speaker. Your local Radio Shack store offers a wide selection of stereo headphones with the required 1/8-inch plug. Listening Safely Do not listen at extremely high volume levels, especially using an earphone.

  • Page 6: Alternate Power Sources

    Alternate Power Sources DX-375 (200-0212) STANDARD AC POWER To power your receiver from an AC outlet, you need an AC adapter (such as Cat. No. 273-1654). CAUTIONS: You must use an AC adapter that supplies 3 volts DC power and delivers at least 300 milliamps.
  • Page 7 power. Set the adapter's voltage switch to 3V. Connect the adapter's orange barrel-plug to the adapter's cord with TIP set to -NEG. Insert the adapter's barrel plug into the receiver's DC 3V jack. this disconnects the internal batteries. Plug the other end of the adapter into your vehicle's cigarette- lighter socket.

  • Page 8: Operation

    Operation DX-375 (200-0212) Follow these steps to listen to the receiver. WARNING: To prevent possible ear injury and hearing loss, set VOLUME to MIN before you turn on the receiver. After you turn on the receiver, set VOLUME to a comfortable listening level. Press POWER to turn on the receiver.
  • Page 9 direct access, preset, or scan tuning methods. Manual Tuning To manually tune to a frequency, repeatedly press MANUAL/AUTO <DOWN or UP> until the display shows the frequency desired. Search Tuning To let the receiver find a station, press and hold <DOWN or UP> for more than 2 seconds.

  • Page 10: Using The Antenna

    CAUTION: If you disconnect power from the receiver for about 1 hour, all information stored in memory will be lost. We recommend you keep the batteries installed when you use an AC or DC adapter to protect the memory from a power loss. Follow these steps to store a frequency in memory.

  • Page 11: Listening Hints

    Listening Hints DX-375 (200-0212) Listening to shortwave radio can be very exciting. Newscasts from a country where important events are taking place give you a sense of immediacy that local newscasts seldom deliver. Although shortwave listening requires no special knowledge, you might enjoy it more if you read some of the numerous books available on this subject.
  • Page 12 To convert from kHz to kHz, divide by 1,000. For example: 15500 kHz / 1000 = 15.5 kHz To convert from kHz to meters, divide 300 by the same number of kHz. For example: 300 / 12 kHz = 25 meters TIME STANDARD FREQUENCIES The following frequencies announce the exact tine of day at specified intervals.

  • Page 13: Care And Maintenance

    Modifying or tampering with the receiver's internal components can cause a malfunction and might invalidate the warranty and void your FCC authorization to operate the receiver. If the receiver is not performing as it should, take it to your local Radio Shack store for assistance. (ALL-12/12/94)

  • Page 14: Troubleshooting

    Troubleshooting DX-375 (200-0212) Your receiver should give you years of trouble-free service if you follow the care instructions given in this manual. If you do have problems, the chart below might help you solve them. Problem Cause Remedy No display, or incorrect Batteries are weak or Replace the batteries.

  • Page 15: Specifications

    Specifications DX-375 (200-0212) GENERAL Output Impedance:......AM, SW 8 ohms (Speaker) 32 ohms (Headphone) Output Power:......350 mW at 10% THD with a 8 ohm load Power Source:..........DC, 3 Volts Test Conditions: AM, SW Modulation:............1000 Hz 30% Output:............50mW/8 ohms Antenna Input:..........AM, SW1 Loop Dummy AM BAND...
  • Page 16 SW1 BAND Condition Unit Nominal Limit Frequency Range 2.300~6.250 2.300~6.250 Maximum Sensitivity 50 mW Output/8 ohms 2.4 MHz µV/m 4.0 MHZ µV/m 6.0 MHz µV/m Usable Sensitivity 20dB S/N 2.4 MHz µV/m 4.0 MHz µV/m 6.0 MHz µV/m Auto Scan Stop Sensitivity 2.4 MHz µV/m 4.0 MHz...
  • Page 17 Test Conditions: FM Modulation: Mono:...........1000 Hz 75 kHz Stereo:..........(L+R) 45% (L-R) 45% Pilot:............19kHz 10% Output:............1mW/32 ohms Antenna Input:.............75 ohms FM BAND Condition Unit Nominal Limit Frequency Range 87.5~108.1 87.5~108.1 3% THD Sensitivity 1mW/32 Ohms 90.1 MHz µV dB 98.1 MHz µV dB 106.1 MHz µV dB...
  • Page 18 DX-375 AM/SW/FM/ST RCV Parts List 200-0212 To order parts call 1-800-843-7422 or visit your local radio shack store. Reference # Cat. No. Description NP Part # ------------------------------------------------------------------------ 11319548 1S1588 11328895 2SA1048 11329190 2SA1297 11332400 XSTR 2SC2668 SI NPN 2SC2668 11332426...
  • Page 19 10844991 XEROX COPY MU2000212 10868727 IC,305-011 FP 60 S MX0074 10868727 DIGITAL IC 3 VOLTS MX0074 10868735 REPLACED BY TD7101F MX0075 10883023 REPLACED BY TA8132AF MX2234 10890929 REPLACED BY TA7358 MX3400 10899011 REPLACED BY TA7331 MX4835 10922581 IC,TC74HC155AP CMOS MX8875 10922581 DECODER 8P DIP MX8875...

Table of Contents