The SignaLink has a number of unique features that eliminate the common problems associated with connecting your radio and computer.  It also provides some advanced features that are not available on other units.

No Serial Port Required - The SignaLink incorporates a unique Auto-PTT™ circuit that eliminates the need to connect to a computer Serial RS-232 Port like other units.  The Auto-PTT™ circuit automatically detects transmissions from the sound card and activates the radio's PTT circuit.  A front panel Delay Control is provided to select optimum triggering in the various digital modes.  Eliminating the Serial Port connection also substantially reduces the coupling of RF Noise between the computer and radio.



Complete Isolation - Unlike other interfaces "claiming" to provide isolation, the SignaLink  "truly" isolates your computer from your radio.  This eliminates troublesome ground loops and prevents hum and noise from degrading the signals.



Matched Audio Levels - The SignaLink provides optimum audio levels to both the computer and radio without adding additional "Level” controls that you will need to calibrate.  This greatly simplifies your setup and getting everything adjusted correctly.  All adjustments can be made using only your radio and sound card controls.



External Speaker Support - If you like to listen to your radio’s audio while operating, then you’ll appreciate the front panel “Auxiliary” audio output jack. This jack will accept an external speaker or headphone and can be configured to be active when the SignaLink is ON or OFF.  It can also be set to ALWAYS ON.



Flexible Power Requirements - The SignaLink consumes so little power that it can be powered by the “Accessory Voltage” found on most radio Mic connectors.This makes for a very simple and clean installation. On radios that don’t have power available, we have provided an external power jack on the rear panel.


Front Panel Switches and Indicators - A front panel ON/OFF switch is provided to prevent accidental transmissions.  The receive signals are still enabled in the OFF position for convenience in monitoring activity.  Bright LEDs are provided to indicate when power is ON and when the PTT is active during transmit.

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