Welcome in the Radio World of Peter, DL2FI and Nikolai, DL7NIK
Elecraft competence center and QRP kit specialists since 2001
This is our information site, if you want to place an order, pleace goto www.qrp-shop-de
Home Impressum Kit Index QRP Shop
Back one page New Toys Contact Support Contact Office

  • Built-in Low-noise Sound Card
  • Simple Installation and Setup
  • Complete Radio Isolation
  • USB Port Powered
  • Works with ALL Radios
  • Uses Mic, Data, or Accy Port
  • Supports All Sound Card Digital
    and Voice Modes
We offer full European 2 year warranty.

YES it works also under Linux. Tested at January 9.2008 by DL2FI. System: Ubuntu 7.1, Software mFSK. SLUSB installes ad /dev1, in the toolbar it is shown as "USB-Codec" Choose USB-Codec in the Toolbar, adjust to full output. Choose /dev1 in the mFSK Software. Tune your TX by the TX regulator of the interface to desired power- that´s all.

Operate All Sound Card Digital & Voice Modes!

Once again Tigertronics sets the pace in digital operating! The new SignaLinkTM USB combines the legendary performance of our SL-1+ with a state of the art built-in low-noise USB Sound Card.  This ground breaking innovation delivers optimum performance while eliminating the need to attach to your computer's existing sound card. Convenient front panel controls and simplified installation make this one of the most user-friendly interfaces on the market, continuing to show that the Tigertronics SignaLink is truly the "Ultimate interface"!

ALL sound card Digital and voice modes are supported by the SignaLinkTM USB.  This includes traditional modes such as RTTY, SSTV and CW (to name a few), as well as today's hottest new modes like PSK31, MT-63 and EchoLink.  Performance on all modes has been optimized by the use of special low-noise parts and careful design techniques, while ease of operation is provided by front panel controls that let you adjust your Transmit Audio, Receive Audio and Transmit delay "on the fly".

The SignaLinkTM USB works with ALL radios and can be attached to the Mic jack, Data Port or Accessory Port. Most customers will want to attach the unit to the back of the radio (Data or Accy Port), as this will allow the microphone to stay plugged in.  A wide selection of Fully assembled radio cables are available for all common base and mobile radios. A special un-terminated radio cable is available for radios that use a non-standard connector, or for use with hand-held radios (HTs).

The SignaLinkTM USB comes fully assembled and tested.  As with all Tigertronics products, it employs "State Of The Art" Surface Mount Construction, and every unit is Robotically Assembled in our own modern factory to ensure maximum performance and reliability. All components are of the highest quality, and every unit undergoes the same stringent quality control and inspection standards that you have grown to expect from Tigertronics!  We invite you to compare every aspect of the SignaLinkTM USB to other sound card interface products.  We think you will agree that we have offered a level of innovation, quality, and value that cannot be beat!


  • Built-in Low Noise Sound Card - This provides optimum performance and frees your computer's existing sound card for other uses.  It also greatly simplifies installation and operation, by reducing the number of cable connections, and by providing consistent performance that is independent of the computer's sound card.

  • Simple Installation - The SignaLink USB has only one USB connection to the computer, and in most cases, only one connection to the radio*.  There are no audio cables to get mixed-up!

  • Easy Setup and Operation - The SignaLink USB's built-in sound card provides consistent audio levels and performance that is completely independent of the computer's sound card.  This lets us streamline our Audio Level Setting procedure like never before. Simply set the software "Transmit" audio controls as described in the SignaLink manual, and then adjust the SignaLink's front panel "TX" control for the desired RF power level.  Setting of the RX Level is even easier, as this is done completely by the SignaLink front panel "RX" control. There are no software "Recording" controls to adjust!

  • Convenient Front Panel Controls - You can now easily adjust your TX Audio, RX Audio and Transmit Delay without having to open the SignaLink case.  This lets you optimize your Transmit Audio (RF Power), Receive Audio level ("waterfall drive"), and Transmit "Hang Time" delay "on the fly"!

  • Works with ALL Radio Mic, Data, and Accessory Ports  - The SignaLink USB works with ALL radios, and can be attached to your radios Mic, Data, or Accessory port.  This allows most users to attach the SignaLink to the back of the radio (Data or Accessory Port) and leave the microphone plugged in!

  • Supports All Sound Card Digital & Voice Modes - The SignaLink USB supports ALL Digital and Voice modes that are available for sound card interfaces.  This includes ALL traditional modes such as CW, RTTY, AMTOR, and SSTV (to name a few), and ALL new modes such as PSK-31, MT-63, and EchoLink.  All standard sound card communications programs will work with the SignaLink USB.

  • Complete Isolation - Unlike some interfaces on the market, ALL SignaLink models COMPLETELY isolate your computer from your radio.  This eliminates troublesome ground loops and prevents hum and noise from degrading the signals.  The SignaLink USB provides isolation through the use of audio transformers and a relay-based PTT keying circuit.

  • Transmit Audio / "Side Tone" Output - A rear panel "Monitor" jack can be used with headphones or powered (amplified) speakers to monitor your Transmit Audio, or Side Tone during CW operation. 

  • External Speaker Support - If your installation requires that you attach the SignaLink to your radio's External Speaker jack, then you can plug an external speaker or headphones into the SignaLink's rear panel "Aux" jack and continue to hear your RX Audio.

  • No External Power Required - The SignaLink USB is always powered by the computer's USB port, so external power is NEVER required..

*NOTE:  Some radio's do not have the "RX Audio" signal on the Mic connector and will require a mono cable to be installed between the SignaLink USB and the radio.  This is never an issue if you attach the SignaLink to your radio's Data or Accessory Port.

What's Included?

Every SignaLink USB is supplied with the following items:

  • USB Cable - This cable connects the SignaLink USB to your computer. It is six feet in length.

  • Mono Cable - This cable is used with radios that do not have Receive Audio on the Mic jack.  It is two feet in length.  If you connect the SignaLink USB to your radio's Data or Accessory Port, then you will NOT use this cable.

  • Jumper Wires  - These are used to configure the SignaLink for your specific radio. No soldering is required - The jumpers simply push into a socket on the circuit board!  The SignaLink software CD contains jumper settings for the most popular radios.  Settings for other radios can be easily obtained by following the step-by-step procedure in the SignaLink manual, or by contacting our Technical Support Staff.

  • Allen Wrench - Used to open the SignaLink USB case.

  • Software CD - This CD contains the latest programs for all of the most popular modes including PSK-31, SSTV, MT-63, CW, RTTY, AMTOR and Packet.  Software for other modes can be downloaded from our SignaLink Software Page.  The entire Tigertronics web site with all of the latest support information (including jumper settings) is also included on the CD.

  • Printed Installation Manual - The SignaLink manual contains both step-by-step, and "quick" installation instructions for users of all experience levels.  Troubleshooting Tips and an Audio Level Adjustment procedure are also included.

  • Telephone Tech Support - If you have any questions, or if you need assistance with the installation of your SignaLink, our Technicians are available to help you. Use QRPproject support SKYPE or our standard telefone 0049 30 85961323

Part Numbers & Options:

SignaLink USB Part Numbers (please specify when ordering):

  • SLUSB4R - For 4-Pin Round Mic Connector
  • SLUSB8R - For 8-Pin Round Mic Connector
  • SLUSBRJ1 - For RJ-11 Mic Connector
  • SLUSBRJ4 - For RJ-45 Mic Connector
  • SLUSB5PD - For 5-pin DIN Data / Accessory Port Connector
  • SLUSB8PD - For 8-pin DIN Data / Accessory Port Connector
  • SLUSB13I - For ICOM 13-pin DIN Accessory Port Connector
  • SLUSB13K - For Kenwood 13-pin DIN Accessory Port Connector
  • SLUSB6PM - For 6-pin mini DIN Data / Accessory Port Connector
  • SLUSBNC - Un-terminated cable (bare wires on radio end)

Extra Radio Cables:

  • SLCAB4R - For 4-Pin Round Mic Connector
  • SLCAB8R - For 8-Pin Round Mic Connector
  • SLCABRJ1 - For RJ-11 Mic Connector
  • SLCABRJ4 - For RJ-45 Mic Connector
  • SLCAB5PD - For 5-Pin DIN Data / Accessory Port Connector
  • SLCAB8PD - For 8-Pin DIN Data / Accessory Port Connector
  • SLCAB13I - For ICOM 13-Pin DIN Accessory Port Connector
  • SLCAB13K - For Kenwood 13-Pin DIN Accessory Port Connector
  • SLCAB6PM - For 6-Pin mini DIN Data / Accessory Port Connector
  • SLCABNC - Un-terminated cable


  • SLHEAD - SignaLink Programming Header


Power Supply:USB Port Powered
Audio Freq Response:100Hz - 10Khz**
**Upper frequency response is intentionally limited by Low Pass Filter.
Sampling Size/Rate:16 Bits, All standard rates are supported up to 48Khz
Computer OS: Windows 98, 98SE, ME, 2000 & XP, MAC OS 9.1 or later, MAC OS X 10.00 or later
Computer Hardware: This depends on the program that you are running see your program's Help or ReadMe file for details).
Most communications programs run fine on a 266Mhz or faster Pentium type processor, but some may require a faster computer.
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 "Hang Time", 10 ms to >3 seconds
PTT Circuit: Relay Rating - 3AMP (max)
Radio Connector: TX Audio, RX Audio, PTT, GND - RJ-45, RX Audio/Speaker - 3.5mm Mono
Computer Connector: SB 1.1/2.0 Compatible Standard USB "A" type connector
Other Connectors:Aux. Speaker - 3.5mm Mono
Case: Extruded Aluminum - 6061T4
Dimensions: 1.6" x 3.2" x 3.6"
Operating Temp: -30C to +60C
**Specifications are subject to change without notice.  Tigertronics reserves
the right to change specifications to improve our products, or for any other
reasons that we deem necessary.

Copyright © 2001-2019 QRPproject.
All Rights reserved
Webmaster and QRPproject Support
This homepage is owned by:
QRPproject Hildegard Zenker QRP and Homebrew International

Molchstr. 15
12524 Berlin
Tel: +49(30)85961323
Fax: +49(30)85961324
Contact email

Bank: Berliner Sparkasse   BLZ 10050000 Konto 1120048733
VAT- ID according to German Law §27 a Umsatzsteuergesetz :DE813395325

IBAN Number: DE83100500001120048733


Responsible according to German Law § 6 MDStV: Peter Zenker, Molchstr. 15 12524 Berlin

Amateur Radio against Racism

Nazi leave Internet