Welcome to the FlexRadio Community! Please review the new Community Rules and other important new Community information on the Message Board.
The latest SmartSDR Software:
SmartSDR v4.2.20 | SmartSDR v4.2.20 Release Notes
SmartSDR v3.10.15 | SmartSDR v3.10.15 Release Notes

The latest 4O3A Genius Product Software:
The latest 4O3A Genius Product Software and Firmware
How to Receive Technical Support::
If you are needing assistance with FlexRadio products, 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.

Digital Mode PSK-31 has Multiple Identical Streams in DM780 SuperSweeper

Options
Jim Bryce W5HFS
Jim Bryce W5HFS Member ✭✭
edited November 2018 in SmartSDR for Windows
Running 1.0 with Win 8 and DM780 using SuperSweeper in PSK-31. I observe multiple ribbons (limited to two, so far as I can tell for now) of the same communication offset by several hundred hertz. The distance in hertz between the identical ribbons is different for different signals. I've not seen this before. The two streams are not together in time; that is one lags the other. Conditions are quite good on all the HF bands. I'm making this observation on 14.070 today, 14 October 2013, aprox 1600z and later when I started operating. It is just possible there is nothing amiss in the equipment and software and the cause is long-way/multi-path/LDE slightly shifted in frequency by doppler or ?? I await responses. --Jim, W5HFS

Answers

  • W4EY
    W4EY Member
    edited November 2018
    Options
    Jim: I have observed the same multiple ribbons on the PSK-31 mode using DM 870. This has appeared since using the latest version of HRD. I turned DM 870 off and started FlDigi. The multiple ribbons did not appear. I have observed multiple carriers spiking across the waterfall when a strong digital signal is received. These issues appear to be present in the new versions of HRD. I will keep tracking your community tag to see if anyone using HRD are having similar issues. Bill W4EY
  • Jim Bryce W5HFS
    Jim Bryce W5HFS Member ✭✭
    edited July 2016
    Options
    Thanks. Please note that I am not using HRD, only DM780. --Jim, W5HFS
  • Tim - W4TME
    Tim - W4TME Administrator, FlexRadio Employee admin
    edited March 2017
    Options
    I do not see this reported behavior with other digital mode programs.

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