Rear Panel Connectors 
Intercom in (2) XLR3F
TW (1) XLR3M

Rear Panel Controls & Indicators
(1) Reset switch
(1) Overload LED

Power Requirements
Input Voltage: 20-30 VDC
Input Current: (idle) <= 30mA
Current Trip: 1.6A

Environmental
32˚ to 122˚ F (0˚ to 50˚C)

Dimensions
4 in. W x 2.0 in. H x 5.0 in. D
(101mm x 51mm x 127 mm)

Weight
1.1 lbs. (0.503 kg)

Product Spares List

The post TWC-701 appeared first on Technology Valuable Systems.

Radio to Partyline

Line Chracteristics
Frequency Response: 200-20KHz ± 3dB
Max Gain: >=-5dBu
Distortion: <=0.3%
Noise: <=-70dBu
Max Level Before Clipping: >=+17dBu
Green LED Threshold: -22dBu ± 3dB
Red LED Threshold: -16dBu ± 3dB
Input Impedance: 400Ω ± 100Ω

Partyline to Radio

Line Characteristics
Frequency Response: 200-8KHz ± 3dB
Max Gain J7 ON, J8 ON: -12dBu ± 3dB
Max Gain J7 OFF, J8 ON: +2dBu ± 3dB
Max Gain J7 OFF, J8 OFF: +27dBu ± 3dB
Distortion: <=0.3%
Noise: <=-50dBu
Max Level Before Clipping: >=0dBu

Power Requirements
Input Voltage Range: 20-30VDC
Quiescent Current: <=40mA
Current with Audio: <=50mA
Current with Call: <=60mA

Rear Panel Connectors
(1) XLR3F
(1) DB-9F

Front Panel Controls and Indicators
Transmit: (1) Red LED
Audio Level Hi: (1) Red LED
Audio Level Norm: (1) Green LED
Receive Level Adjust: (1) Control
Transmit Level Adjust: (1) Control

Dimensions
1.63 in. H x 4.75 in. W x 5.15 in. D
(41.4 mm x 121 mm x 131mm)

Weight
1 lb. 4 oz. (0.6 kg)

Product Spares List

The post TW-47 appeared first on Technology Valuable Systems.

Clear-Com Format

Line Characteristics
Max Level Before Clipping: >=20dBu
Impedance: >=10KΩ

Signalling
Receive: <=4 VDC
Send: >=11VDC

RTS Format

Line Characteristics
Max Level Before Clipping: >=20dBu
Impedance: >=10KΩ

Signalling Tone
Send frequency: 20kHz ±1KHz
Receive frequency: 20kHz ±500Hz
Send level: >=-6dBu
Receive level: <=-20dBu

General Characteristics

Frequency Response
Partyline – Matrix: 200-10KHz ± 3dB
Matrix – Partyline: 200-10KHz ± 3dB

Distortion
Partyline – Matrix: <=0.5%
Matrix – Partyline: <=0.5%

Noise
Partyline – Matrix: <=-50dBu
Matrix – Partyline: <=-70dBu

Max Gain
Partyline – Matrix (CC setting): 20dB ± 3dB
Partyline – Matrix (RTS setting): 16dB ± 3dB
Matrix – Partyline (CC setting): -5dB ± 3dB
Matrix – Partyline (RTS setting): -1dB ± 3dB

Min Gain
Partyline – Matrix (CC setting): -7dB ± 3dB
Partyline – Matrix (RTS setting): -12dB ± 3dB
Matrix – Partyline (CC setting): -33dB ± 3dB
Matrix – Partyline (RTS setting): -29dB ± 3dB

Power Requirements
Input Voltage Range: 20-30VDC
Quiescent Current: <=70mA
Max Current: <=80mA

Rear Panel Connectors and Controls
Partyline: (1) XLR3F
RTS: (1) DB-15F
Matrix: (1) RJ-45, (2) Mode Switches

Front Panel Connectors and Controls
TS1 Earphone: (1) 3.5mm Jack Socket
Level Adjust: (2) Rotary Control
Null Adjust: (3) Rotary Control
Power Indicator: (1) Green LED
Data Indicator: (1) Amber LED

Dimensions
1.62 in. H x 5.94 in. W x 4.80 in D
(41 mm x 151 mm x 122 mm)

Weight
1.75 lbs (.794 kgs)

Accessories
Wiring diagram, adhesive backed TS-1 testing earphone

The post EF-701M appeared first on Technology Valuable Systems.

Clear-Com Format

Program Line Input
Input Impedance : >= 1KΩ

Partyline Output
Output Impedance: >10KΩ

Stage Announce/Balanced Line Out
Type: Balanced
Output Impedance: >= 80Ω
Load Impedance: >= 600Ω

Frequency Response
Program Input – Partyline: 200 – 18KHz ± 3dB
Partyline – Line Out: 200 – 18KHz ± 3dB

Max Distortion
Program Input – Partyline: <= 0.2%
Partyline – Line Out: <= 0.5%

Noise
Program Input – Partyline: < -85dBu
Partyline – Line Out: < -60dBu

Max Gain
Program Input – Partyline: >= -16dB
Partyline – Line Out: >= 24dB

Min Gain
Program Input – Partyline: <= -20dB
Partyline – Line Out: <= -45dB

Line Out LED Threshold
Green: -7dBu ± 2dB
Red: +5dBu ± 2dB

Partyline LED Threshold
Green: -10dBu ± 2dB
Red: 0dBu ± 2dB

Power
Input Voltage Range: 20-30 VDC
Input Current (Idle): <= 40mA
Input Current (Max): <= 50mA

Rear Panel Connectors
Intercom: (4) XLR-3F (1 per channel)
4-Wire Terminal Block Connectors: (4) Connectors (1 per channel)
4-Wire Transmit Level Switches: (4) Switches (1 per channel)

Front Panel Connectors
Headset: (1) XLR-4M
TS1 Earphone: (1) 3.5mm Jack Socket

Front Panel Controls & Indicators
Green Level LED: (4) LEDs (1 per channel)
Red Level LED: (4) LEDs (1 per channel)
Link LED: (4) LEDs (1 per channel)
Power LED: (4) LEDs (1 per channel)
Null Test Button: (4) Buttons (1 per channel)
Receive Level Adjust: (4) In controls (1 per channel)
Transmit Level Adjust: (4) Out controls (1 per channel)
Nulling Adjust: (12) Null controls (3 per channel)
Channel Link Switch: (3) Link switches (A+B, A+C, A+D)

Environmental
32 – 122˚F (0 – 50˚C)

Dimensions
19 in. W x 1.75 in. H x 7.75 in. D
(483 mm x 44.5 mm x 197 mm)

Weight
5.83 lbs. (2.65 Kg)

Product Spares List

The post IF4W4 appeared first on Technology Valuable Systems.

Clear-Com Format

Line Characteristics
Max Level Before Clipping : >=3dBu
Impedance: >=10KΩ

Signalling
Receive: <=4 VDC
Send: >=11VDC

RTS Format

Line Characteristics
Max Level Before Clipping : >=5dBu
Impedance: >=10KΩ

Signalling Tone
Send frequency: 20kHz ±100Hz
Receive frequency: 20kHz ±500Hz
Send level: >=-6dBu
Receive level: <=-25dBu

General Characteristics

Frequency Response
Partyline – Partyline: 200-8KHz

Distortion
Partyline – Partyline: <=0.2%

Max Gain
Clear-Com – RTS: >=9dB
Clear-Com – Clear-Com: >=4dB
RTS – Clear-Com: >=-1dB
RTS – RTS: >=4dB

Min Gain
Clear-Com – RTS: <=1dB
Clear-Com – Clear-Com: <=-4dB
RTS – Clear-Com: <=-9dB

Power Requirements
Input Voltage Range: 20-30VDC
Input Current (average): <=50mA

Rear Panel Connectors
Rear panel: (2) XLR3M (1 per channel)
(2) XLR3F (1 per channel)

Front Panel Connectors
Headset: (1) XLR4M
TS1 Earphone: (1) 3.5mm Jack Socket

Front Panel Controls and Indicators
Power: (2) Green LED (1 per channel)
Null Test Button : (2) Buttons (1 per channel)
Gain Level Adjust: (2) Controls (1 per channel)
Null Adjust: (6) Controls (3 per channel)
Connection Type Switch: (2) Switches (1 per channel)
Pin Connection Select Switch: (2) Switches (1 per channel)

Dimensions
1.75in. H x 19in. W x 7.25in. D
(45 x 483 x 185 mm)

Weight
5.63 lbs. (2.56 Kg)

Product Spares List

The post TW-12C appeared first on Technology Valuable Systems.

Panel Microphone Input
Input Type: Electret
Input Impedance: >=2KΩ
Mic Limiter Threshold: -2dBu ±3dB
Mic Limiter Range: >= 15dB

Headset Microphone Input
Input Type: Dynamic
Input Impedance: >= 1KΩ
Mic Limiter Threshold: -2dBu ± 3dB
Mic Limiter Range: >= 15dB

Program Line Input
Maximum Level before Clipping: >= 20dBu
Input Impedance: >= 5KΩ

Headset Output
Load Impedance: >= 8Ω
Output Impedance: <= 25Ω
Output Limiter Threshold: +5dBu ± 3dB
Maximum Output Level before Distortion: >= 17dBu

Speaker Output
Load Impedance: >= 4Ω
Max Output Level before 1% Distortion: 20dBu ± 2dBu

Party-line Output
Off Noise: < -74dBu
Output Impedance: >10KΩ

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)

Product Spares List

The post KB-702GM appeared first on Technology Valuable Systems.

Headset Microphone Input
Input Type: Dynamic
Input Impedance: >= 1KΩ
Mic Limiter Threshold: -2dBu ± 3dB
Mic Limiter Range: >= 15dB

Program Line Input
Maximum Level before Clipping: >= 20dBu
Input Impedance: >= 5KΩ

Headset Output
Load Impedance: >= 8Ω
Output Impedance: <= 25Ω
Output Limiter Threshold: +5dBu ± 3dB
Maximum Output Level before Distortion: >= 17dBu

Speaker Output
Load Impedance: >= 4Ω
Max Output Level before 1% Distortion: 20dBu ± 2dBu

Party-line Output
Off Noise: < -74dBu
Output Impedance: >10KΩ

Party-line Input
Crosstalk: < -60dB
Max level before Clipping : >= 12dBu

Frequency Response
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
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
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
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 (KB-702GM only): (1) 1/4 in. (0.64 cm) panel mounting jack
Headset: (1) XLR-4M

Front Panel Controls & Indicators
(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

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
0.99 lbs. (0.45 Kg)

Product Spares List

The post KB-702 appeared first on Technology Valuable Systems.

Program Line Input
Maximum Level before Clipping: >= 20dBu
Input Impedance: >= 5KΩ

Speaker Output
Load Impedance: >= 4Ω
Max Output Level before 1% Distortion: 20dBu ± 2dBu

Party-line Output
Off Noise: < -74dBu
Output Impedance: >10KΩ

Party-line Input
Crosstalk: < -60dB
Max level before Clipping: >= 12dBu

Frequency Response
Program Input – Speaker Out: 200 – 18KHz ± 3dB
Party-line – Speaker Out: 200 – 18KHz ± 3dB

Max Distortion
Program Input – Speaker Out: <= 0.5%
Party-line – Speaker Out: <= 0.5%

Noise
Program Input – Speaker Out: < -60dBu
Party-line – Speaker Out: < -50dBu

Max Gain
Program Input – Speaker Out: >= 24dB
Party-line – Speaker Out: >= 40dB

Power
Input Voltage Range: 20-30 VDC
Input Current (Idle): <= 90mA
Input Current (Max): <=110mA

Internal Connectors and Jumpers
Intercom: Line Five terminal connector
Program Input: Three terminal connector
Option Switches: Three DIP switches

Front Panel Controls & Indicators
(1) Program level control
(1) Intercom level control
(1) Talk button
(1) Call button
(1) Integral microphone

Environmental
32 – 122o F (0 – 50o C)

Dimensions
8.5 in. W x 4.5 in. H x 1.75 in. D
(210 mm x 114 mm x 44 mm)

Weight
1.04 lbs. (0.47 Kg)

Product Spares List

The post KB-701 appeared first on Technology Valuable Systems.

Headset Microphone Input
Input Type : Dynamic
Input Impedance: >= 1KΩ
Mic Limiter Threshold: -2dBu ± 3dB
Mic Limiter Range: >= 15dB

Program Line Input
Input Impedance: >= 5KΩ

Headset Output
Load Impedance: >= 8Ω
Output Impedance: <= 25Ω
Output Limiter Threshold: +5dBu ± 3dB
Maximum Output Level before Distortion: >= 17dBu

Party-line Output
Off Noise: < -74dBu
Output Impedance: >10KΩ

Party-line Input
Crosstalk: < -60dB
Max level before Clipping: >= 12dBu

Frequency Response
Headset Mic – Party-line: 300 – 15KHz ± 3dB
Party-line – Headset Out: 300 – 15KHz ± 3dB

Max Distortion
Headset Mic – Party-line: <= 0.5%
Party-line – Headset Out: <= 0.2%

Noise
Headset Mic – Party-line: < -70dBu

Max Gain
Headset Mic – Party-line: 41dB ± 2dB
Party-line – Headset Out: >= 34dB

Power
Input Voltage Range: 20-30 VDC
Input Current (Idle): <= 50mA
Input Current (Max): <=100mA

Internal Adjustments and Connections
Intercom Line: Seven terminal connector
Option Switches: Two DIP switches
Option Board Jumper: Two sets of options jumpers

Front Panel Connectors
Headset: (1) XLR-4M

Front Panel Controls & Indicators
(1) Sidetone control
(1) Talk button
(1) Call button
(1) Channel select switch
(1) Volume control

Environmental
32 – 122˚F (0 – 50˚C)

Dimensions
4.625 in. W x 4.5 in. H x 1.75 in. D
(117 mm x 114 mm x 44 mm)

Weight
0.46 lbs. (0.21 Kg)

Product Spares List

The post HB-704 appeared first on Technology Valuable Systems.

Headset Microphone Input
Input Type : Dynamic
Input Impedance: >= 1KΩ
Mic Limiter Threshold: -2dBu ± 3dB
Mic Limiter Range: >= 15dB

Program Line Input
Input Impedance: >= 5KΩ

Headset Output
Load Impedance: >= 8Ω
Output Impedance: <= 25Ω
Output Limiter Threshold: +5dBu ± 3dB
Maximum Output Level before Distortion: >= 17dBu

Party-line Output
Off Noise: < -74dBu
Output Impedance: >10KΩ

Party-line Input
Crosstalk: < -60dB
Max level before Clipping: >= 12dBu

Frequency Response
Headset Mic – Party-line: 300 – 15KHz ± 3dB
Party-line – Headset Out: 300 – 15KHz ± 3dB

Max Distortion
Headset Mic – Party-line: <= 0.5%
Party-line – Headset Out: <= 0.2%

Noise
Headset Mic – Party-line: < -70dBu

Max Gain
Headset Mic – Party-line: 41dB ± 2dB
Party-line – Headset Out: >= 34dB

Power
Input Voltage Range: 20-30 VDC
Input Current (Idle): <= 50mA
Input Current (Max): <=100mA

Internal Adjustments and Connections
Intercom Line: Seven terminal connector
Option Switches: Two DIP switches
Option Board Jumper: Two sets of options jumpers
Front Panel Connectors
Headset: (1) XLR-4M

Front Panel Controls & Indicators
(1) Sidetone control
(1) Talk button
(1) Call button
(1) Channel select switch
(1) Volume control

Environmental
32 – 122˚F (0 – 50˚C)

Dimensions 
4.625 in. W x 4.5 in. H x 1.75 in. D
(117 mm x 114 mm x 44 mm)

Weight
0.46 lbs. (0.21 Kg)

Product Spares List

The post HB-702 appeared first on Technology Valuable Systems.