Not quite. Software like HRD PSK31 and DM780 (very good software) is designed to look at detected audio from a radio running in USB mode. What you'll see in a waterfall display is all of the signals that fit within the bandwidth of the radio (typically about 2.6 kHz, but adjustable to any bandwidth you choose based on what the radio itself can do). DM780 has the additional capability of reading the radio's carrier frequency, adding to it the audio frequency, and displaying that at the top of the waterfall!
If you used DM780 to for CW but had the radio set for USB, it would be like any other stream -- offset by whatever frequency that station was from the carrier, just like a PSK or RTTY signal. When you run software like HRD PSK31 and DM780 with a radio in USB mode, you see all the noise in that 2.6 kHz bandwidth. With the K3, you would use one of the digital modes, because they are optimized for modes like RTTY and PSK. See the manual for details. The K3 has the additional capability to narrow up the the bandwidth a LOT to make a huge reduction in noise. This can really help when copying weak signals. You do this using the Width and Offset controls. Hope this helps. 73, Jim K9YC --Original Message Text--- From: Adam Koczarski Date: Thu, 8 Jan 2009 08:06:08 -0800 When I tune the K3 to a frequency it makes sense to me that I see data streams in the waterfall that are in the side band to the right of the tuned frequency. When I tune in a CW signal and zero beat it using the tone feature of the K3, shouldnt the CW stream be right at the left edge of the waterfall since its just the carrier being modulated?
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