Signalink-KX3 pack for Elecraft radio with KX3 microphone socket View larger
Signalink-KX3 pack for Elecraft radio with KX3 microphone socket


New product


Signalink-SLUSB-KX3 pack for Elecraft KX3 KX2 radio with 3.5mm microphone jack

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The Signalink-SLUSB-KX3 interface pack is compatible with Elecraft radios equipped with a 3.5mm microphone jack like the Elecraft KX2, KX3.

Low noise USB sound card
Quick and easy installation with jumper
RX and TX adjustment from the front panel
Supports ALL digital modes such as SSTV, RTTY, Packet, PSK, ROS, FT8, FT4, JS8, ACARS, etc.
Complete RF isolation between the computer and the radio
Transmit Audio output and external speaker jack

The package includes: The Signalink interface, the SLCABKX3 cord to connect the radio to the interface and the SLMODKX3 jumper to be installed inside the box, 1 x 2.5m USB cable, 1 x mono jack cable, 6 x 24 AWG pre-cut and stripped wires, 1 x 3/32 "Allen key, rubber feet, 1 x English manual.

Note: This interface does not allow the control of the frequency (CAT control) on the radio used, it allows to switch to PTT and to send a signal to the radio and to receive it, thanks to the USB peripherals created.

More details

149,17 € tax excl.

Instead of 160,67 €

Out of stock, available within 1-2 months

Pack content


Signalink cable jumper guide FR

Guide in French to choose the right radio cable and jumper according to the brand and model of the radio used. 177.6k

Signalink cable jumper guide EN

Guide in English to choose the right radio cable and jumper according to the brand and model of the radio used. 666.13k

Manual Signalink USB (FR)

French manual and user guide Signalink USB 1.48M

Manual Signalink USB (EN)

English manual and user guide Signalink USB. 745.98k

Data sheet

  • Power supply: USB port (Male B connector)
  • Consumption: ~ 140mA in transmission, ~ 80mA nominal
  • Operating temperature: -30 ° C to + 60 ° C
  • Audio frequency response: 200 Hz - 4000 Hz at 600 ohms
  • Sampling rate: 16 Bits, up to 48Khz
  • Operating System: Windows 98SE, ME, 2000, XP, Vista, Windows 7, 8.x and Windows 10
  • MAC OS 9.1, MAC OS X 10.00
  • Z radio input / output: 600 Ohm
  • Auto-PTT ™ delay: 30 ms to 3 seconds
  • PTT circuit: Relay, rated value - 1A @ 24VDC (max), 0.5A @ 120VAC (max)
  • Radio connection: Audio TX, Audio RX, PTT, GND and RJ-45 female
  • RX audio / speaker: 3.5mm mono jack mono
  • Housing: Extruded aluminum, powder coated
  • Dimensions: 40 x 81 x 91 mm
  • Weight: 187g

Compatible positions

This Signalink pack is compatible with the radios below:




The SignaLink USB supports virtually ALL digital modes that are available for sound card interfaces including but not limited to, PSK31, MT-63, WSJT/WSJT-X  modes (FT8, JT4, JT9, JT65, QRA64, ISCAT, MSK144, WSPR, JTMS, FSK441, FSK315, ISCAT, and JT6M.), SSTV, APRS ®, Packet (300 and 1200 baud), VARA HF, VARA Narrow, and VARA Wide.

The SignaLink USB also supports virtually ALL Voice modes (VOIP, RoIP, etc.), such as EchoLink®, and Zello. 

About the only modes that you can't operate with the SignaLink USB, or any other sound card interface, are Pactor, G-TOR and Clover.

Additional or similar equipment


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Delivery Europe & Overseas

Stock and shipped from France

Product return

14 days to return, 2 warranty

Email support

Response within 24h to 72h

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