Welcome to the FlexRadio Community! Please review the new Community Rules and other important new Community information on the Message Board.
Need the latest SmartSDR or 4O3A Genius Product Software?
SmartSDR v4.1.3 | SmartSDR v4.1.3 Release Notes
SmartSDR v3.10.15 | SmartSDR v3.10.15 Release Notes
The latest 4O3A Genius Product Software and Firmware
If you are having a problem, please refer to the product documentation or check the Help Center for known solutions.
Need technical support from FlexRadio? It's as simple as Creating a HelpDesk ticket.

Wide SSB

Cy Stanway
Cy Stanway Member ✭✭
in SmartSDR for Windows

I saw a video (which I can't find anymore) about a feature in SmartSDR that allows a wider SSB signal that is supposed to be upwards of 3db increase in apparent signal. Does anyone know how that is set up and how it is supposed to work?

Comments

  • KD0RC
    KD0RC Member, Super Elmer Moderator
    edited April 2022

    Hi Cy, there is confusion over CESSB (Controlled Envelope Single Sideband) and ESSB (Extended Single Sideband).

    ESSB is just a wide signal and does not have any signal increase on its own.

    CESSB is the method invented by Dave Hershberger, W9GR to give a nearly 3 dB increase in average power with only 1.6% added distortion. This is the method used by Flex. To enable it, turn on PROC. You get more compression as you change from NOR to DX and on to DX+.

    image.png

    The 2.8 is dB increase in average power (Peak Envelop Power or PEP stays the same) is like having a nearly 200 W radio.

    Because the distortion is so low (unlike analog compressors from the past), I tend to keep it on all the time.

    There is a great video by Dave Hershberger explaining CESSB:

    https://www.youtube.com/watch?v=nAGUmHrO3Ac


  • Cy Stanway
    Cy Stanway Member ✭✭

    Excellent! Thank you!

Leave a Comment

Rich Text Editor. To edit a paragraph's style, hit tab to get to the paragraph menu. From there you will be able to pick one style. Nothing defaults to paragraph. An inline formatting menu will show up when you select text. Hit tab to get into that menu. Some elements, such as rich link embeds, images, loading indicators, and error messages may get inserted into the editor. You may navigate to these using the arrow keys inside of the editor and delete them with the delete or backspace key.

Comment As ...

Categories