![]() Back in the day, Kenwood sold a computer interface for this radio called the IF-10C. The TS-140 does not have an RS-232 connection, but it does have a radio interface connection that uses 5 volt TTL signals. It's just a two-way USB sound card with a VOX-based keying interface for the radio's PTT. The key point here is that the SignaLink USB does not control the radio. ![]() That area is active almost all the time and good for testing. For initial testing, tune your radio to 14.070 MHZ USB. I have used between 1 and 25 watts and get all over the world. But digital modes do not need a lot of power. Most digital modes are continuous and can overheat your transmitter on long transmissions. Otherwise you could transmit the dog barking as well. ![]() And, if your PC has a internal microphone, turn it off. Otherwise they can be transmitted along with your digital signal. If you are transmitting, make sure you turn off all of the system sounds, like "you have mail". For example, muting the speakers for your internal speakers, can also mute the output of external sound card. ![]() It should be pretty obvious when you are initially configuring HRD.īe careful of some of the settings. I use the internal sound card, but you will need to configure HRD to use the Signalink sound card. So on my laptop, I use two USB connections plus the audio input and audio output. My rig control interface (RS-232 to CIV) is also home brew. I use a home brew interface with my HP G62 laptop (Windows 7) and I use HRD. I have others, but that is the one I am using with my IC-735. One of the cables that I use is USB to RS232 Converter Cable 1.0 meter - UMC-201. Cheaper interface cables will drop the connection and cause problems. Be a little careful when purchasing this cable. If your computer does not have a RS-232 interface, you will need a USB to Serial Port Interface cable. I believe that is the IF-10c option for the TS-140S. It is also possible to go through the microphone connector, but that is not as efficient and for another discussion.įor rig control you will need to go in through your rigs RS-232 connector. That connector has all of the audio and PTT signals necessary. I believe on your TS-140S you would need to access the rear ACC2 connector. This interface handles the audio in/out from your rig. The Signalink USB requires a USB connection, because it is effectively a external sound blaster interface.
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