Most rigs also have a TX audio connector independent to the microphone input: you are advised to use this input. This supplies a constant signal level to the sound card. Note: HRD Software LLC does not accept responsibility for damage to your rig should things go wrong.Ī proven audio interface: Cheap and easy to build You should always use the rig’s high-impedance audio output if there is one available.
If you plan to use the circuit below, please check the actual connections to the mini-DIN connection of your rig. It will work on just about any other rig but you will have to modify the connections to your radio. This solution will work with any Icom or Yaesu rig that has a 6-pin mini-DIN connector for external audio. We’ll assume that you want to do things properly, so here is a home brew circuit that has proved its worth many times. It is possible to connect your radio directly to your sound card without any form of isolation but it is not recommended. You can do a Google search and find hundreds of articles on the subject. Interfacing can be done in so many ways that it would take days to plow through all the available information. Next we need to interface the sound card to the radio. You would also be able to listen to music on your computer while still operating in the digital modes. The advantage of having the second sound card is that it can be used for your digital communications while eliminating the possibility of transmitting unwanted computer sounds. The second sound card can be either internal or external. Although the computers built-in sound card can be used, it is recommended that you either use a soundcard built into your radio (preferred, where applicable) or connect a second sound card to your PC.
DM-780 requires the use of a sound card and some type of interface to connect the sound card to the radio. You also need an audio interface to send and receive the data (Audio tones) to and from your rig and this is done by connecting your rigs audio output and input to your computers sound card. Solution home Ham Radio Deluxe User Guides Digital Master (DM-780) Interfaces for Digital Modes
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