Note
Audio Freq Response: Approx. 200Hz - 4000+Hz @ 600 ohms**
**NOTE: The audio bandwidth of the SignaLink USB was significantly improved in 2018 with the use of new surface mount audio isolation transformers and additional noise filtering. A Rev 200 or higher circuit board is required for top tier speeds using the VARA FM "Wide" mode . Be sure to see our VARA WIDE Information for tips and suggestions!
Sampling Size/Rate: 16 Bits, All standard rates are supported up to 48Khz
Computer OS: Windows 98SE, ME, 2000, XP, Vista, Windows 7, 8.x, 10 and Windows 11, MAC OS 9.1 or later**, MAC OS X 10.00 or later**, Linux**. freeBSD**, Raspberry PI** (various models)
Computer Hardware: This depends on the program that you are running. See your program's documentation for details.
Radio In/Out Z: 600 Ohm (nom). TX/RX Levels are fully adjustable for compatibility with Hi-Z and Low-Z radio connections.
Auto-PTT™ Delay: Adjustable Transmit "Hang Time", 30 ms to 3 seconds.
PTT Circuit: Relay. Rating - 1A @ 24VDC (max), 0.5A @ 120VAC (max)
Radio Connection: TX Audio, RX Audio, PTT, GND - RJ-45 Female
RX Audio/Speaker - 3.5mm mono*
*Note: This connector accepts both stereo and mono plugs but it is wired for mono operation.
Computer Connection: USB 1.1/2.0/3.x Compatible. Standard USB "B" type connector.
USB C ports can also be used by means of an inexpensive (~$5.00) USB C to USB adapter from Amazon or similar sellers.
Other Connectors: Aux. Speaker - 3.5mm mono*
*NOTE: This connector accepts both stereo and mono plugs but it is wired for mono operation.
Power Supply: USB Port Powered (max current draw is ~140 ma on transmit, ~80 ma nominal)
Case: Custom extruded aluminum, powder coated
Operating Temp: –30C to +60C
