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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                             MHz     87.5~108.1  87.5~108.1
3% THD Sensitivity 1mW/32 Ohms   90.1 MHz   µV dB    4.7        10
                                 98.1 MHz   µV dB    2.5         7
                                106.1 MHz   µV dB    4.7        10
Usable Sensitivity 30 dB S/N     90.1 MHz   µV       3.2         9
                                 98.1 MHz   µV       2.5         7
                                106.1 MHz   µV       3.2         9
Auto Scan Stop Sensitivity       98.1 MHz   µV       4.0        10
Tuning Indicator On Sensitivity  98.1 MHz   µV       2.2        10
Maximum Output Power  1 mV Input 98.1 MHz   mW      40          20
S/N Ratio             1 mV Input 98.1 MHz   dB      62          50
Distortion            1 mV Input 98.1 MHz   %        0.4         3
Output Power         at 10% THD  98.1 MHz   mW      37          20
AM Suppression        1 mV Input 98.1 MHz   dB      48          30
-3 dB Limiting                   98.1 MHz   µV       1.6         4.0
DX-LOCAL Sensitivity Ratio
  (3% THD)                       98.1 MHz           15           -
Tone Control Effect  at 10 kHz   98.1 MHz   kHz     13          9~17
Image Rejection Ratio           106.1 MHz   dB      34          22
I.F Rejection Ratio              90.1 MHz   dB      60          50
Spurious Response                98.1 MHz   dB      74          50
Capture Ratio       100 µV Input 98.1 MHz   dB       3.0         6
Alternate Channel Selectivity
  at 100 µV Input                98.1 MHz   dB      25          15
De-emphasis                     100    Hz   dB      -2       -1~-3
                                  8   kHz   dB     -11      -8~-14
Overload            100 mV Input 98.1 MHz    %       0.6       3.0
Current Drain                               mA      45        51
Oscillator Drop Out                          V       1.8       2.1

STEREO

Stereo Separation    1 mV Input 100 Hz       dB     25       20
                                  1 kHz      dB     38       30
                                 10 kHz      dB     27       20
Distortion        at 1 mV Input   1 kHz      %       0.3      3
Stereo Beacon Sensitivity                    µV      1.6      7.1
38 kHz Leakage       1 mV Input              dB     34       28
Pilot Modulation     1 mV Input              %       3        7

Note: Nominal Specs represent the design specs.  All units should be able
      to approximate these - some will exceed and some may drop slightly
      below these specs.  Limit specs represent the absolute worst
      condition that still might be considered acceptable; in no case
      should a unit fail to meet limit specs

(RLR/all-02/27/95)

Содержание DX 275

Страница 1: ...Radio Shack DX 375 Shortwave Radio User Manual...

Страница 2: ...ne to your favorite stations Direct Access Tuning directly tunes to the desired frequency when you enter the frequency on the keypad Search Tuning searches up or down the band for the next available s...

Страница 3: ...ents you from accidentally turning the receiver on or off changing the band or frequency or changing other front panel controls You an still adjust VOLUME TONE and SENSITIVITY To lock the controls set...

Страница 4: ...ace the batteries be sure to turn off the receiver s power Follow these steps to install the batteries 1 Push the cover in the direction of the arrow and remove it from the battery compartment 2 Remov...

Страница 5: ...s 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...

Страница 6: ...rt the barrel plug into the receiver s DC 3V jack This disconnects the internal batteries 4 Plug the adapter into a standard AC outlet VEHICLE BATTERY POWER To power your receiver from a vehicle s bat...

Страница 7: ...er s orange barrel plug to the adapter s cord with TIP set to NEG 3 Insert the adapter s barrel plug into the receiver s DC 3V jack this disconnects the internal batteries 4 Plug the other end of the...

Страница 8: ...AM or the 12 band Shortwave SW band of operation Press BAND until the desired band FM AM or SW appears on the display If you select FM FM MHz and STEREO when you tune to a stereo broadcast appear on t...

Страница 9: ...eiver accepts it as 1450 If you make a mistake in entering a frequency ERROR flashes on the display Enter the frequency again Preset Tuning To tune directly to a station that is entered into memory si...

Страница 10: ...ocation NOTE If you do not press a number within about 10 seconds MEMORY stops flashing and you must repeat steps 2 and 3 USING THE ANTENNA Use the following guidelines to adjust your receiver s anten...

Страница 11: ...t to hear these broadcasts between 6 00 PM and midnight your time NOTE European stations often list a frequency by giving its wavelength For example the 19 meter band refers to the range of frequencie...

Страница 12: ...uch as giving the accurate time verifying frequency calibration and gaining information on radio propagation conditions Station Country Frequency WWV and WWVH Fort Collins Colorado and Kauai Hawaii 2...

Страница 13: ...nd cause the receiver to work improperly Keep the receiver away from dust and dirt which can cause premature wear of parts Wipe the receiver with a damp cloth occasionally to keep the product looking...

Страница 14: ...r s batteries Connect the adapter to AC or DC power source No sound Batteries are weak or dead Replace the batteries Volume is set too low Adjust volume as desired Headphones are plugged into the rece...

Страница 15: ...Tuning Indicator On Sensitivity 1000 kHz V m 79 220 DX LOCAL Sensitivity Ratio 1000 kHz dB 26 16 36 S N Ratio 5mV m Input 1000 kHz dB 45 40 Image Rejection 1450 kHz dB 40 34 IF Rejection 600 kHz dB 5...

Страница 16: ...Drop Out 2 4 MHz V 1 85 2 1 DC DC Conv OSC Frequency MHz 2 77 Tuning Indicator On Sensitivity 4 0 MHz V m 100 224 Tuning Step Frequency kHz 5 5 SW2 Band Condition Unit Nominal Limit Frequency Range MH...

Страница 17: ...1 MHz 15 Tone Control Effect at 10 kHz 98 1 MHz kHz 13 9 17 Image Rejection Ratio 106 1 MHz dB 34 22 I F Rejection Ratio 90 1 MHz dB 60 50 Spurious Response 98 1 MHz dB 74 50 Capture Ratio 100 V Input...

Страница 18: ...L RF SW2 CA4017 10565315 SILVER CAN W BLACK SLUG CA4017 L12 10565331 COIL OSC AM CA4019 10565331 SILVER CAN W BLACK SLUG CA4019 L13 10565349 COIL OSC SW1 CA4020 L14 10565356 COIL OSC SW2 CA4021 105653...

Страница 19: ...C 1P S0200 11055324 SLEEP POWER S0200 S7 S8 S9 S10 S11 S12 11055332 SWITCH TACT 1C 1P S0201 S13 S14 S15 S16 S17 11055332 PRESET DIRECT TUNING S0201 S18 S19 S20 S21 S22 11055332 BAND ENTER UP DOWN TUNI...

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