Clear-Com WBS-670 Operations Instructions Page 13
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3-3
WTR-670
Specifications
RF Frequency Range ......................518-608MHz, 614 - 740 MHz in 18 MHz TX and RX bands
Power Requirements ........................................6“AA” Cells Alkaline (NiMH optional)
Current Draw ....................................................140mA(Push-to-Talk, Talk On)
Temperature Range ...............................................-4°Fto130° F (-20° C to 55° C)
Dimensions ..................................3.75”W x 5.05”H x 1.65” D (9.5 cm x 12.8 cm x 4.2 cm)
Weight .......................................................16oz(454g) with alkaline batteries
TX Antenna ..........................................1/4Wave(supplied), Screw type, Replaceable
RX Antenna ..........................................1/4Wave(supplied), Screw type, Replaceable
FCCID: .........................................................................B5DM515
Frequency Response ..............................................................300Hz-8kHz
Microphone input sensitivity .............................................................7mV
Local Headset Output .......................................40mWoutput into 600ê (1% distortion)
Transmitter
Type................................................................Synthesized, 712 channels
Transmit Power...............................................50mWMax. (auto-power reduction)
Modulation Type ........................................................................FM
Deviation .............................................................40kHz(35kHzEurope)
RF Frequency Stability ................................................................0.005%
Modulation Limiter .................................................Peak-Responding Compressor
Radiated Harmonics & Spurious ........................................Exceeds FCC specifications
Receiver
Type...............................Dual Conversion Superheterodyne, Synthesized, FM, 712 channels
RF Sensitivity ........................................................<0.7 µV for 12 dB SINAD
Squelch Threshold .................................................20dBSINAD (About 1.0 µV)
IF Selectivity .................................................................3dBat230kHz
Image Rejection................................................................70dBorbetter
Squelch Quieting ......................................................................90dB
RF Frequency Stability ................................................................0.005%
Distortion ................................................................<1%atfull deviation
- Operating Instructions 1
- Table of Contents 3
- Table of Contents (continued) 4
- Introduction 5
- INTERCOM 6
- WBS-670 BLOCK DIAGRAM 6
- WBS-670 Base Station 7
- AUXILIARY AUDIO 8
- 2-4 Blank 10
- WTR-670 Beltpack 11
- Specifications 13
- 3-4 Blank 14
- Initial Equipment Set-Up 15
- Antenna Placement 16
- Antenna Connection 16
- Antenna Polarization 16
- Distance between Antennas 16
- 700 FEET 17
- 100 FEET 17
- Base Station Set-up 19
- Location 19
- Power Connection 19
- Transmit Switches 19
- Intercom Switch 20
- Auxiliary Input/Output 20
- Intercom Interface 20
- Beltpack Set-up 21
- Battery Installation 21
- Transmit mode 22
- Headset Connection 22
- 4-9 Blank 23
- Pre-Walk-Thru Checklist 24
- 5-2 Blank 25
- System Operation 26
- Display Contrast 28
- Clear-Com 29
- Group / Channel Select 31
- Group / Frequency Select 32
- Frequency Edit 33
- Beltpack Operation 36
- Power / Local Headset Volume 36
- Battery Check 36
- Talk Button 36
- Microphone Gain 36
- WTR-670 Menu Structure 37
- Beltpack Menu Structure 37
- Power-Up Screens 38
- Group / Channel Screen 39
- Transmit Screen 40
- Receive Screen 41
- HOLD [SET] AND PRESS [TALK] 43
- RELEASE [SET] 43
- CONTINUE TO HOLD [SET] 43
- AND PRESS [TALK] AGAIN 43
- System Walk-Thru 44
- 7-2 Blank 45
- Troubleshooting 46
- 8-2 Blank 47
- Tech Tips 48
- 9-2 Blank 49
- Battery Information 50
- 10-2 Blank 51
- AUDIO(-)PLUSPOWER 52
- AUDIO ( + ) PLUS POWER 52
- 11-2 Blank 53
- 12-2 Blank 55
- Customer Service Information 56
- 13-2 Blank 57
- Certification Information 58
- 14-2 Blank 59
- Clear-Com Limited Warranty 60
- 15-2 Blank 61
- Intercom Systems 62
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