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Radio Radio

Telephone Equipments


Auto-Answer Hybrid

From: JK Audio
  • Weight:0 lb

  • Shipping Dimensions:4” x 5” x 1.5 in

-Enable/Disable Auto-Answer
-Passive Design (No Battery or AC Required)
-Rack Mountable with  RA4 Rack Mount Panel

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. 

Yes, 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.


-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)