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.
Digital Mode Transmission Distortion
Options
Ed, K0KC
Member ✭✭
I recently constructed a cable to put my Flex-6700 on the digital modes with my Tigertronics SignalLink USB modem. I have been able to make a number of JT65 and JT9 contacts with this setup, but have noted when transmitting, the waveform (including the baseline) on the panadapters will randomly jump perhaps 30 or 40 dB and then quickly returns to normal. I have not noted a glitch in output power when this problem occurs. This anomaly probably occurs at least once per 50 second transmission and lasts less than one second. It appears similar to what one would see from a lightening strike somewhere nearby when receiving. In this case, however, there is no lightening and it is the transmitted waveform that I am viewing rather than the received one. SSDR 0.12.17 running under Win 7/32, DIGIU mode.
1
Comments
-
Same issue which does not appear to affect transmission.1
-
That is the question I had too. Is this just a visual anomaly or is it being transmitted as RF. I suspect it is just a visual FFT display anomaly. Ed can you verify this?0
-
Tim, I suspect that is a visual anomaly. I never listen to JT65 or JT9 signals off the air or via a monitor, but yesterday, I did engage the monitor and there was no clicking, noise or other indication that the RF signal was affected by the display jumping around. If I do not hear anything in the monitor, I think that it is a good assumption that the RF is clean, especially since I also observed an external power meter and could not see an output power "glitch". I have had no problems making contacts either.0
-
That is what I suspected. We will be doing some things to clean up the spectrum display on TX in future versions of SmartSDR.0
-
Another data point...when I use the tune button in WSJT-X (transmits a single tone), the display jumps around. It did not seem to do that when I used the tune button in SSDR.0
-
This is just another manifestation of the FFT display issue I mentioned above.0
-
Seems much better in 0.13.101
-
I agree...seems much better in 0.13.10.0
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
- 766 Maestro
- 41 FlexControl
- 836 FLEX Series (Legacy) Radios
- 733 Genius Products
- 393 Power Genius XL Amplifier
- 255 Tuner Genius XL
- 85 Antenna Genius
- 229 Shack Infrastructure
- 153 Networking
- 370 Remote Operation (SmartLink)
- 120 Contesting
- 583 Peripherals & Station Integration
- 115 Amateur Radio Interests
- 812 Third-Party Software