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C.TRANSMITTER 

UNIT 

1. EFFECTIVE RADIATED POWER

mW 

500 

2. CARRIER FREQ.STABILIT Y

H z

500 

3. MODULATION LIMITING

kHz 

2.5

4. CARRIER ATTACK TIME

ms 

80 

5. AUDIO FREQUENCY RESPONSE

@ 300 HZ 

dB

-6

@ 3000 HZ 

dB

-6

6. AUDIO DISTORTION 

%

3

7. HUM and NOISE 

dB 

45 

8. TRANSIENT FREQ.BEHAVIOR

a) TX ON

ms 

30 

b) TX OFF 

ms 

5

D. POWER SUPPLY

1. BATTERY LIFE (1:1:18 RATIO) 

HR 

24 

2. BATTERY

V

4.8 - 6.0

MicroTalk

Specifications

29

MicroTalk

Specifications

28

I.GENERAL SPECIFICATIONS

A.FREQUENCY

1

446.00625

2

446.01875

3

446.03125

4

446.04375

5

446.05625

6

446.06875

7

446.08125

8

446.09375

B. RECEIVER

UNIT 

1. SENSITIVITY

FOR 12 DB SINAD  

µV 

0.25 

FOR CALL SIG.DETECTION 

µV 

0.2

2. MAX. AUDIO OUTPUT @10% THD

mW

100

3. MAX.S/N RATIO @ 1mV RF INPUT 

dB 

45 

4. SQUELCH 

a) SENS.

µV 

0.2 

b) ATTACK TIME 

ms 

120 

c) CLOSING TIME 

ms 

200 

5. AUDIO FREQUENCY RESP.

@ 300 HZ 

dB 

-6

@ 3000 HZ 

dB 

-6

6. SIGNAL DISPLACEMENT BW

+/-kHz 5

7. ADJACENT CH.REJECTION 

dB 

55 

8. INTERMODULATION REJECTION 

dB 

55 

9. SPURIOUS RESPONSE REJECTION 

dB 

65 

Channel

PMR

Frequency

Channel

In MHz

The use of this 2-way radioproduct

involves the public airways and its use may

be subject to local laws, regulations, and

ordinances. Before using the product you

should check to see that the contemplated

use does not violate any local law, regula-
tion or ordinance that may be applicable.

PMR250-UK.qx  6/17/99 2:55 PM  Page 28

Summary of Contents for MicroTalk PMR250

Page 1: ...ou A3 Operating your MicroTalk Battery Installation 2 LCD Display 4 Turning On 5 Auto Battery Power Saver 5 Select Main Channel 1 8 6 Select CTCSS Subchannel 00 38 6 Battery Low 9 Calling Another Part...

Page 2: ...r NiMH batteries Incorrect positioning can damage both the batteries and the unit Only the Cobra NiMH battery pack part no PMR BP can be recharged via the Desktop Charger part no PMR CH See Accessorie...

Page 3: ...Turning On Your MicroTalk Operation 4 LCD Display LCD Display Note The Auto Battery Save Circuit does not affect the unit s ability to receive incoming transmissions Auto Battery Power Saver Your Mic...

Page 4: ...te To return to operational mode and not save your last setting push and release button Select CTCSS Subchannel Push and release button Small numbers flash next to channel display on LCD Select CTCSS...

Page 5: ...sible and or recharge NiMH battery pack Note When battery capacity is at the 1 4 level it is recom mended that you replace alkaline batteries or recharge your NiMH Nickel Metal Hydride battery pack On...

Page 6: ...d receiv ing units must be on same channel and subchannel for the call function to work Note Your incoming Call audio ringing level is dependent on your unit s volume setting Operation 11 Operation 10...

Page 7: ...nother Party To send your outgoing message Turn on your MicroTalk 2 way radio An audible tone will indicate that the unit is on The LCD will go through a 3 second self test and then go to operational...

Page 8: ...inished talking and it s OK for them to begin talking Talk Confirmation Tone Maximum Range Extender Auto squelch can be temporarily removed to allow all signals to enter by pressing the button Maximum...

Page 9: ...ds in a shopping centre MicroTalk Range Your MicroTalk Radio has a range of up to 3 km 2miles This effective range may be shortened under some conditions To achieve maximum range the auto squelch can...

Page 10: ...plug into the Mic Spkr jacks Open Mic Spkr tab on top of unit 1 2 5 Checking on travelling compan ions in another car 6 Agreeing on a meeting spot after an event 3 Communicating between different floo...

Page 11: ...many advanced features not found on other 2 way radios These include Ring Notification Modes Tone Indicator Settings Key Stroke Tone Talk Confirmation Tone Lock Key Advanced Features Note When usingor...

Page 12: ...with a ring tone To set Ringer Ringer Modes Ringer Test To test the ringer mode Rotate ON OFF Volume Control clockwise An audible tone will indicate the unit is on and then the LCD will go through a...

Page 13: ...turned on or off at any time while in operational mode Tone Setting The Key StrokeTone and Talk Confirmation Tone can be temporarily turned on or off during the operation of your MicroTalk 2 Way Radio...

Page 14: ...id accidental operation To engage the LOCK function Lock Function 1 To unlock push and release button again Buttons are unlocked and icon disappears 2 3 Never place the unit in water or in a damp plac...

Page 15: ...RECEIVER UNIT 1 SENSITIVITY FOR 12 DB SINAD V 0 25 FOR CALL SIG DETECTION V 0 2 2 MAX AUDIO OUTPUT 10 THD mW 100 3 MAX S N RATIO 1mV RF INPUT dB 45 4 SQUELCH a SENS V 0 2 b ATTACK TIME ms 120 c CLOSIN...

Page 16: ...s shirtclip PMR EBM 1 NiMH Rechargeable Battery Pack High performance Nickel Metal Hydride battery pack for multiple recharging PMR BP 2 Port Desktop Charger Charges your MicroTalk Radio and 1 NiCad b...

Page 17: ...vada bidireccional Cobra MicroTalk PMR 250 Appareil de radiocommunications usage priv Ricetrasmettitore portatile per uso privato 1999 Cobra Electronics Corporation 6500 West Cortland Street Chicago I...

Page 18: ...go and they are perfect for business use as well such as office to warehouse communi cations The ERC European Radiocommunications Committee has created 8 channels called Private Mobile Radio PMR Thes...

Page 19: ...Select Buttons 13 Microphone 14 Maximum Range Extender Button 15 PTT Push To Talk Key 16 Battery Chamber 13 12 8 14 15 16 1 7 9 10 11 1 2 5 4 3 6 Thank you for purchasing the Cobra PMR 250 2 way Radi...

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