How much spectrum can I see at one time and what are the limits?

When the FLEX-6000 Signature Series radios were announced, we promised double what we had under PowerSDR -- so 384 kHz of bandwidth in the spectrum display. What we'll be delivering is a lot more -- something around 7 MHz to either side of the center of the HD Spectrum Display (Panadapter) for the FLEX-6700 and the FLEX-6500. You can slide the center of the HD Spectrum Display anywhere the radio will tune and still see this bandwidth if you choose. We will also have a "full bandwidth" display without slice receivers that will show around 70 MHz of bandwidth at once. The engineering team has worked hard to get the ~14 MHz of bandwidth available for every slice receiver enabled HD Spectrum Display (NOTE: it is 7 MHz for the FLEX-6300). We suspect that most will want to watch a full bandwidth display and a series of slice enabled HD Spectrum Displays that are stretched to the width of the ham band they are centered on. Since the widest ham band is 4 MHz (4m and below) we feel most will not stretch the HD Spectrum Display that wide for the most part, but the capability is there if you need it.

Also, I'd like to point out that there is no penalty in client performance for wider bandwidths. This is a subtlety, but it is an important feature of the FLEX-6000 architecture that differentiates it from other DDC radios. The data sent to the client and the load on the client are the same regardless if you are looking at 15 kHz or 15 MHz of bandwidth in the HD Spectrum Display. More typically, wide-band architectures must send more data to the client the wider the bandwidth and then the data is processed into the display. This has very negative performance implications for both local and especially remote operation.

Instead of doing this (bombarding the client), we use the considerable processing power we built into the platform to use the extra data to build a cleaner the HD Spectrum Display when more data is available. With this, we can achieve 30+ frames per second of display data across the entire 15 kHz-15 MHz range of bandwidth without burdening the client.

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