JK Audio 'Broadcast Host' Digital Hybrid Phone Interface

Telephone Interface Unit with Automatic Digital Line Nulling • 115V/230V Auto PSU

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Photos show the actual item for sale

Unit is tested and confirmed to be fully working. Note that JK Hybrids in my experience operate best with a low level of input signal, so start testing by turning down the Send gain control to the point where just the first LED level indicator is peaking lit. Also the output is on the low side so having the Caller level set to the max is normal when interfacing to balanced downstream equipment.

Description

Broadcast Host turns your desktop into a professional broadcast center. Contains everything you need to get talk show quality phone recordings into your mixer or sound card.

Connect a mic and headphones for a simple broadcast back to the station. Already at the station? Use Broadcast Host in your newsroom to record high quality interviews. Or, you can upload your recorded interview to your podcast. Broadcast Host allows you to send mic and line level signals into the phone line while maintaining excellent separation between your voice and the caller. The stereo output jack on the back of the unit provides your voice on one channel and only the caller’s voice on the other channel. The balanced XLR output jack contains only the caller’s voice.

Full details may be obtained from the User Manual.

The digital hybrid connects audio signals to a standard analog telephone line without the transmit / receive crosstalk common to analog hybrids. The Digital Signal Processor (DSP) continuously monitors both the phone line and audio signals to deliver excellent separation. This proprietary, dual-convergence echo canceller algorithm can achieve excellent separation, typically exceeding 50 dB, without any setup and without sending a noise burst down the line.

Usually Sells for $470

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Broadcast Host provides connections for a microphone, headphones, mixer, sound card, telephone and your analog telephone line. An auxiliary telephone is only required to place outgoing calls. The auxiliary telephone is disconnected when you press the “Call” button, and reconnected when you press the “Drop” button.

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Broadcast Host features Auto-Answer/Auto Disconnect for use in IFB and monitoring applications. Other applications include: telephone interviews, talk shows, church PA interface, and conference room full duplex applications.

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Features

Specifications

Input
Mic/Line:

Balanced Female XLR, 1kohm, -10 mVRMS (-35 dBv nom)
Mic/Line pad switch = +4dBv max

Line:

3.5 mm mono, 20kohm, 250 mV RMS (-10 dBv nom)

Output
Balanced:

Male XLR, 200ohm, 500 mV RMS (+12 dBv max)

Unbalanced:

3.5 mm stereo, 50 ohms, 250 mV RMS (+4 dBv max)
Left = send, Right = caller.

Headphone:

3.5 mm stereo, 8 ohms, 250 mW, mixed send and receive.

Phone Line:

RJ11C

Aux Phone:

RJ11C

Isolation:

1500 VAC

Ringer:

0.8B REN

Frequency Response:

Telephone Side 200 Hz - 3600 Hz

Power:

120-240 VAC power supply (included).

Size:

7” x 6” x 1.6” (18 x 15 x 4.2 cm)

Weight:

2.2 pounds

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