Soundcard Interfaces

A sound card interface is used for digital operating modes such as RTTY, PSK-31 and FT-8. The need for such a device results from the different or completely missing grounding of the computer and the radio. This results in potential differences which lead to equalizing currents and these in turn lead to a clearly audible hum on the modulation. A sound card interface breaks the galvanic connection between the computer and the radio and thus prevents equalizing currents and hum.


The sound card interface connects the AF inputs and outputs from the radio to the computer, offers PTT control and usually also a CAT interface (Computer Aided Tuning). The connection to the computer is usually always done via USB. More modern sound card interfaces have their own USB sound card integrated, otherwise the sound card built into the PC is used. An own sound card has many advantages, for example, because settings can be made separately for amateur radio applications. Ideally, the manufacturer of the interface should also offer suitable cables for as many different radios as possible. So you don't have to solder cables yourself. Properly configured, a universal sound card interface works with any software that uses the standard interfaces of a computer.

 

Items 1-10 of 43

  1. MFJ-5713DI
    New
    MFJ-5713DI

    For Icom 13-Pin DIN Accessory Port Connector

    In stock, shipped in 1 to 2 days.

    €41.00
    incl. VAT plus shipping €34.45
    SKU MFJ-5713DI
  2. MFJ-5745J Cable for RigPi, RJ-45 plug (mic socket)
    New
    MFJ-5745J Cable for RigPi, RJ-45 plug (mic socket)

    Adapter cable for MFJ-1234 RigPi, RJ-45 to RJ-45, radios with RJ-45 mic socket.

    In stock, shipped in 1 to 2 days.

    €41.00
    incl. VAT plus shipping €34.45
    SKU MFJ-5745J
  3. MFJ-5708D
    New
    MFJ-5708D

    For 8-Pin DIN Data / Accessory Port Connector, for use with MFj-1204D8 Interface

    In stock, shipped in 1 to 2 days.

    €41.00
    incl. VAT plus shipping €34.45
    SKU MFJ-5708D
  4. MFJ-5706MD
    New
    MFJ-5706MD

    For 6-pin mini DIN connector for data/accessories, for use with MFJ-1204MD interface

    In stock, shipped in 1 to 2 days.

    €41.00
    incl. VAT plus shipping €34.45
    SKU MFJ-5706MD
  5. MFJ-5705D
    New
    MFJ-5705D

    For 5-Pin DIN Data / Accessory Port Connector, for use with MFJ-1204D5 interface

    In stock, shipped in 1 to 2 days.

    €45.00
    incl. VAT plus shipping €37.82
    SKU MFJ-5705D
  6. MFJ-5704P
    New
    MFJ-5704P

    For 4-Pin Round Mic Connector, for use with MFJ-1204P4 interface

    In stock, shipped in 1 to 2 days.

    €45.00
    incl. VAT plus shipping €37.82
    SKU MFJ-5704P
  7. MFJ-5700R
    New
    MFJ-5700R

    For various Yaesu HTs including the FT-60R, VX-8GR, for use with the MFJ-1204R

    In stock, shipped in 1 to 2 days.

    €41.00
    incl. VAT plus shipping €34.45
    SKU MFJ-5700R
  8. MFJ-5700KX3
    New
    MFJ-5700KX3

    For the Elecraft KX3`s Mic and Phones jacks, for use with MFJ-1204KX3

    In stock, shipped in 1 to 2 days.

    €41.00
    incl. VAT plus shipping €34.45
    SKU MFJ-5700KX3

Items 1-10 of 43