Welcome to the new FlexRadio Community! Please review the new Community Rules and other important new Community information on the Message Board.
Need the latest SmartSDR, Power Genius, Tuner Genius and Antenna Genius Software?
SmartSDR v3.7.4 and the SmartSDR v3.7.4 Release Notes | SmartSDR v2.12.1 and the SmartSDR v2.12.1 Release Notes
SmartSDR v1.12.1 and the SmartSDR v1.12.1 Release Notes
Power Genius XL Utility v3.8.8 and the Power Genius XL Release Notes v3.8.8
Tuner Genius XL Utility v1.2.11 and the Tuner Genius XL Release Notes v1.2.11
Antenna Genius Utility v4.1.8
SmartSDR v3.7.4 and the SmartSDR v3.7.4 Release Notes | SmartSDR v2.12.1 and the SmartSDR v2.12.1 Release Notes
SmartSDR v1.12.1 and the SmartSDR v1.12.1 Release Notes
Power Genius XL Utility v3.8.8 and the Power Genius XL Release Notes v3.8.8
Tuner Genius XL Utility v1.2.11 and the Tuner Genius XL Release Notes v1.2.11
Antenna Genius Utility v4.1.8
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.
Need technical support from FlexRadio? It's as simple as Creating a HelpDesk ticket.
W9GR QEX Article on CESSB
Options
Paul Christensen, W9AC
Member ✭✭
Flex users who subscribe to QEX may want to pay particular attention to the recent ground-breaking article by Dave, W9GR (See QEX, Nov/Dec. 2014, pp.3-13).
Dave is the developer of the Controlled-Envelope SSB (CESSB) system used in recent versions of SSDR. Yes, there's some complex math presented in the article, but even those Flex users without an advance math background should be able to understand his digital peak control processing method.
I first met Dave back in the early '80s when he worked for Harris Broadcast. He developed a popular method of effectively controlling FM modulation overshoot and filter ringing that occurs when peak amplitude protection is used between a stereo generator and FM exciter. He's expanded on some of those ideas to include SSB modulation control and CESSB is his result.
Having read through the article -- as well as a description of Dave's recent DTV projects, he would be a highly useful player to help Flex accelerate the integration of adaptive pre-distortion (APD) into SSDR and the companion Flex firmware.
The QEX article is one of a few outstanding articles that comes along every decade or two. Gerald's SDR introduction back in 2004 is certainly another.
Paul, W9AC
Dave is the developer of the Controlled-Envelope SSB (CESSB) system used in recent versions of SSDR. Yes, there's some complex math presented in the article, but even those Flex users without an advance math background should be able to understand his digital peak control processing method.
I first met Dave back in the early '80s when he worked for Harris Broadcast. He developed a popular method of effectively controlling FM modulation overshoot and filter ringing that occurs when peak amplitude protection is used between a stereo generator and FM exciter. He's expanded on some of those ideas to include SSB modulation control and CESSB is his result.
Having read through the article -- as well as a description of Dave's recent DTV projects, he would be a highly useful player to help Flex accelerate the integration of adaptive pre-distortion (APD) into SSDR and the companion Flex firmware.
The QEX article is one of a few outstanding articles that comes along every decade or two. Gerald's SDR introduction back in 2004 is certainly another.
Paul, W9AC
3
Comments
-
-
Thanks, Howard. Interesting read.0
Leave a Comment
Categories
- All Categories
- 246 Community Topics
- 2.1K New Ideas
- 488 The Flea Market
- 7.1K Software
- 5.9K SmartSDR for Windows
- 134 SmartSDR for Maestro and M models
- 331 SmartSDR for Mac
- 243 SmartSDR for iOS
- 222 SmartSDR CAT
- 163 DAX
- 348 SmartSDR API
- 8.6K Radios and Accessories
- 6.9K FLEX-6000 Signature Series
- 765 Maestro
- 41 FlexControl
- 836 FLEX Series (Legacy) Radios
- 733 Genius Products
- 393 Power Genius XL Amplifier
- 255 Tuner Genius XL
- 85 Antenna Genius
- 228 Shack Infrastructure
- 152 Networking
- 370 Remote Operation (SmartLink)
- 120 Contesting
- 583 Peripherals & Station Integration
- 115 Amateur Radio Interests
- 812 Third-Party Software