KB-702 GM provides a remote speaker station permits the user to select between two channels of party-line communications, with the ability to talk and/or listen on the selected channel. The user can listen via the integrated speaker, or may use a headset or telephone-style handset - and can talk via a headset mic, a telephone handset, or a push-to-talk microphone. KB-702 also includes gooseneck microphone (GM-9/GM-18 or GN-250/ GN-450) connector options, with adjustable VOX feature and mic/ headset switch.
Panel Microphone Input
- Input Type: Electret
- Input Impedance: >=2K ohms
- Mic Limiter Threshold: -2dBu +/-3dB
- Mic Limiter Range: >= 15dB
Headset Microphone Input
- Input Type: Dynamic
- Input Impedance: >= 1K ohms
- Mic Limiter Threshold: -2dBu +/- 3dB
- Mic Limiter Range: >= 15dB
Program Line Input
- Maximum Level before Clipping: >= 20dBu
- Input Impedance: >= 5K ohms
Headset Output
- Load Impedance: >= 8 ohms
- Output Impedance: <= 25 ohms
- Output Limiter Threshold: +5dBu +/- 3dB
- Maximum Output Level before Distortion: >= 17dBu
Speaker Output
- Load Impedance: >= 4 ohms
- Max Output Level before 1% Distortion: 20dBu +/- 2dBu
Party-line Output
- Off Noise: < -74dBu
- Output Impedance: >10K ohms
Party-line Input
- Crosstalk: < -60dB
- Max level before Clipping : >= 12dBu
- Sidetone Null Capability: > 25dB
Frequency Response
- Panel Mic - Party-line: 300 - 16KHz +/- 3dB
- Headset Mic - Party-line: 300 - 15KHz +/- 3dB
- Program Input - Headset Out: 200 - 18KHz +/- 3dB
- Program Input - Speaker Out: 200 - 18KHz +/- 3dB
- Party-line - Headset Out: 200 - 18KHz +/- 3dB
- Party-line - Speaker Out: 200 - 18KHz +/- 3dB
Max Distortion
- Panel Mic - Party-line: <= 0.5%
- Headset Mic - Party-line: <= 0.5%
- Program Input - Headset Out: <= 0.2%
- Program Input - Speaker Out: <= 0.5%
- Party-line - Headset Out: <= 0.2%
- Party-line - Speaker Out: <= 0.5%
Noise
- Panel Mic - Party-line: < -65dBu
- Headset Mic - Party-line: < -70dBu
- Program Input - Headset Out: < -60dBu
- Program Input - Speaker Out: < -60dBu
- Party-line - Headset Out: < -50dBu
- Party-line - Speaker Out: < -50dBu
Max Gain
- Panel Mic - Party-line: >= 37dB
- Headset Mic - Party-line: 41dB +/- 2dB
- Program Input - Headset Out: >= 18dB
- Program Input - Speaker Out: >= 24dB
- Party-line - Headset Out: >= 34dB
- Party-line - Speaker Out: >= 40dB
Power
- Input Voltage Range: 20-30 VDC
- Input Current (Idle): <= 90mA
- Input Current (Max): <=110mA
Internal Adjustments and Connections
- Intercom: Line Five terminal connector
- Program Input Three terminal connector
- Option Switches: Three DIP switches
- Call Signal Jumper3: Three sets of options jumpers
- Call Alert Tone Level Control: Level adjustment control
Front Panel Connectors
- Panel Mic: (1) 1/4 in. (0.64 cm) panel mounting jack
- Headset: (1) XLR-4M
Front Panel Controls & Indicators
- (1) Panel /headset mic switch
- (1) Program monitor level control
- (1) Sidetone null control
- (1) Talk button
- (1) Call button
- (1) Speaker ON-OFF switch
- (1) Channel select switch
- (1) Speaker volume control
- (1) VOX control
- (1) VOX indicator
Environmental
- 32 - 122??F (0 - 50??C)
Dimensions
- 8.25 in. W x 4.5 in. H x 1.75 in. D(210 mm x 114 mm x 44 mm)
Weight
- 1.1 lbs. (0.50 Kg)