JK Audio AUTO AutoHybrid Telephone Audio Interface

This simple, passive, auto-answer/disconnect telephone line hybrid allows simultaneous send and receive audio through analog telephone lines. Suitable for monitoring remote locations, IFB feeds, and many simple studio, conferencing, and PA telephone interface applications.

You can send and receive audio at the same time. The dual transformer hybrid is capable of 20 dB nominal trans-hybrid loss. In other words, your transmit signal will appear mixed with the receive signal, but at a level 20 dB lower than it was sent into the phone line.

The “Auto” feature is very simple. When the “Auto” switch is selected, AutoHybrid will answer on the first ring. The phone line will remain off-hook, until either the Drop button is depressed, or until the phone company releases the line.

Specifications:
Input: Female XLR
Impedance: 1k ohms
Level: 500 mV RMS (-4 dBu nom, +6 dBu max)
Insertion Loss: 11dB Send XLR to Phone Line
Output: Balanced Male XLR
Impedance: 600 ohms
Level: 200 mV RMS (-12 dBu nom)

Screw Terminals:
– Off-hook Control (+5VDC Momentary)
– Release Control (+5VDC Momentary)
– OH LED Signal (pulled to ground on OH)
Phone Line: RJ11C
Aux Phone: RJ11C
Isolation: 1500 VAC
Ringer: 0.8B REN
Frequency Response: Telephone Side 200 Hz – 3600 Hz
Size: 4” x 5” x 1.5” (10.5 x 13 x 4 cm)
Weight: 12 oz.