SignaLink™ Sound Card - Radio Interface
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
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.
- 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
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.
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
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.