As with the receive case, the isolation transformer is optional, but recommended. Your sound board might not have a line output, so the speaker output can be used instead. Running AFSK requires a connection that looks like this, as does transmitting recorded SSB audio. The other two are only for users that want WriteLog to not control the sound board mixers. You tell WriteLog you want to run in this mode by selecting the TU Type “stereo sound board w/AFSK”:Īs described above, this page describes the easy way to set up WriteLog’s use of your sound board: be sure to use one or the other of the Stereo options.
SOUND CONTROL BOARDS PC
You can either run AFSK (audio frequency shift keying) tones from you sound board to your rig’s microphone input jack, or, if your transmitter supports FSK, you can add additional hardware to connect a COM port on your PC to your rig’s FSK input. Transmitter connections AFSK – Audio Frequency Shift Keyingįor transmitting RTTY, you have a choice to make. With this connection, you have enough to do receive only RTTY. While the isolation transformer is optional, it is highly recommended as a precaution against introducing ground loops that get 60Hz hum into the signal. In SSB operation, the receive connection is only used for recording off-the-air audio. For the receive side, you don’t have a choice: the receiver audio must somehow make it to the sound board’s input. The signal from your receiver needs to make it to your sound board, and the PC needs to be able to somehow key your transmitter and make it put FSK (frequency shift keying) or SSB on the air. You need signals going in two directions. You can also set Number of Radios to 2, and make the second radio the “R” radio at this time.Īfter setting all three of the above dialogs, be sure to do a Setup Save Configuration command in WriteLog so it will come up the same way every time. This will turn on the little “L” indicator with the green circle.
SOUND CONTROL BOARDS FULL
(Note that the “Echo Microphone” feature in combination with the “Enable Recording Loop” feature requires your microphone and your received audio to be connected to two different sound boards on Windows Vista and later.) The “Pause recording loop during SSB Wave Xmit” is only there for certain sound boards that fail to work full duplex.įinally, tell WriteLog to use the Left channel of your sound board using the Radio This is Radio Left Command: In addition, you should check the Echo Microphone ON if you’re going to run SSB.
That top button, Enable Recording Loop, is enough to get WriteLog to receive RTTY and CW properly, and to record SSB. Then go to WriteLog’s Tools Sound board Options command:
The only important setting for the sound board is the “DVK Type”. Start with WriteLog’s Setup Ports menu command: But if you’re just getting started, just do what this page says. There are alternative ways to setup so that you can do things like: use K6STI’s RITTY program or use a sound board that doesn’t have appropriate mixer control. There’s one easiest way to setup WriteLog to deal with your sound board: set up WriteLog to operate your sound board in stereo and use it the same way for RTTY, SSB, and CW.
SOUND CONTROL BOARDS HOW TO
It doesn’t come with any hardware or software documentation that would tell you how to actually hook things up and configure your PC and rig for the task. While the sound card in your PC can do a good job of both transmitting and receiving RTTY (radio teletype) and SSB it wasn’t specifically designed for that task.
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