[digitalradio] MT63 specifications

2009-08-13 Thread David Freese
An excerpt from Pawel Jalocha's source code distribution: The MT63 modem is intended for amateur radio as a conversation (RTTY like) mode where one station transmits and one or more other stations can listen. In short, the modem transmits 64 tones in its 1 kHz bandwidth: the audio range for the

[digitalradio] flarq compatible modes

2009-08-13 Thread David Freese
I have received several reports that users have not been able to get flarq-fldigi=fldigi-flarq to establish an flarq connection. I think that the problem might have been a failure on my part to delineate which modes are compatible with flarg. I have updated the on-line documentation for

[digitalradio] NBEMS software problems

2009-08-12 Thread David Freese
Sorry for the tardy reply but I only receive a daily synopsis from this group. If you need help with any aspect of running the NBEMS suite (fldigi, flarq, wrap) you will receive a more timely response by posting your questions and problems on the yahoo group dedicated to it's support:

[digitalradio] Re: Fldigi ARQ mode .... what have I missed/ not done ?

2009-02-02 Thread David Freese
Graham wrote: trying to connect to g4wgt using olivia 250 x 8 as the mode Olivia cannot be used as the transport mode for flarq unless the timeout values in flarq are set to their maximums. Even then it is highly likely that the digital effect of doubling will occur. Please try to limit

[digitalradio] Re: THOR robustness or lack thereof

2008-10-12 Thread David Freese
--- In digitalradio@yahoogroups.com, Rick W [EMAIL PROTECTED] wrote: Great information, Dave, On other thing that I can not understand is why THOR's performance proved to be so poor on Tony's tests. The robustness to multipath and Doppler does not seem to show up although sensitivity at

[digitalradio] Re: Sound card question

2008-10-11 Thread David Freese
The following is an excerpt from the web page Sights and Sounds of Digital Signals, http://www.w1hkj.com/FldigiHelp/Modes/index.htm. THOR Modes General Description THOR is a family of offset incremental multi-frequency shift keyed modes with low symbol rate, closely related to DominoEX. A

[digitalradio] New multimode program for Linux

2006-11-26 Thread David Freese
I would like to announce that I have posted fldigi, release 1.01. This release consists of GPL source code written in C++ and uses the Fast Light Toolkit gui support libraries. There is also a pre-compiled binary that is known to operate on several Linux distros including the Ubuntu derivatives.