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.
Optimum sample rate setting for MMTTY
Options
Stu Phillips - K6TU
Member ✭✭
With thanks to Tim W4TME for the pointer...
To get optimum decoding of RTTY signals using MMTTY, set the sample rate on the Setup dialog (Option Menu, Setup MMTTY), Misc tab to 12000 when using DAX from the 6000 series radios.
12000 is a direct sub-rate of the DAX 24000 sample/sec rate and generates significantly better decodes in weak signal situations than the default 11025 rate.
Stu K6TU
To get optimum decoding of RTTY signals using MMTTY, set the sample rate on the Setup dialog (Option Menu, Setup MMTTY), Misc tab to 12000 when using DAX from the 6000 series radios.
12000 is a direct sub-rate of the DAX 24000 sample/sec rate and generates significantly better decodes in weak signal situations than the default 11025 rate.
Stu K6TU
2
Comments
-
Thanks for this tip Stu! Dave,wo2x0
-
Ya know, I really haven't done much with RTTY...ever. Thanks to your post, I may have to take a look at it again. :-) Too many things to play with and not enough time.
1 -
The resampler is poorly designed. This not uncommon and ultimately easily fixed.1
-
OT (sorry). Can somebody please explain why MMTTY is so popular when something like Fldigi is being actively developed?1
-
History and Tradition plus pure cussedness
Ham's have been using MMTTY for a very long time.
It's hard to teach an old dog new tricks.
All the other Cliches apply
0 -
Guy, i cant talk about Fldigi but i know there is a difference between all the digital decoders. If you check internet you will found some compare sheets. Many RTTY contester for example use 2 or 3 different decoders at same time! Clean and strong signals can decode every rtty soft decoder. MMTTY is a standalone tool or a module that can be used in many Logging soft like DX4WIN, Writelog, N1MM, RCKLOG ......
Till today i have never used Fldigi in RTTY and dont no if any had done a compare to any other RTTY soft.
I will try as next also Fldigi - but it must have a interface with logging soft. Means a decoded callsign must be shown in my logging input windows without any mouse click.
0 -
MMTTY is used as an engine on the most popular loggers. In this regard it a very thin well regarded application. There are others being developed, another thin RTTY engine being used now is called 2Tone. Its not unusual to see a RTTY contester decoding with both MMTTY and 2Tone for added accuracy.1
Leave a Comment
Categories
- All Categories
- 245 Community Topics
- 2.1K New Ideas
- 488 The Flea Market
- 7.3K Software
- 5.9K SmartSDR for Windows
- 134 SmartSDR for Maestro and M models
- 327 SmartSDR for Mac
- 241 SmartSDR for iOS
- 224 SmartSDR CAT
- 161 DAX
- 343 SmartSDR API
- 8.5K Radios and Accessories
- 6.9K FLEX-6000 Signature Series
- 768 Maestro
- 42 FlexControl
- 836 FLEX Series (Legacy) Radios
- 726 Genius Products
- 391 Power Genius XL Amplifier
- 251 Tuner Genius XL
- 84 Antenna Genius
- 221 Shack Infrastructure
- 149 Networking
- 369 Remote Operation (SmartLink)
- 118 Contesting
- 582 Peripherals & Station Integration
- 116 Amateur Radio Interests
- 810 Third-Party Software