Software FLDIGI Questions

[W4KRR]

I'm starting to play around with decoding WEFAX and other digital transmissions using FLDIGI. I have a couple of questions.

Some fax images are black background with white characters, some are white background with black characters. Is this just the way they are being sent? Likewise some images come in "sideways"; is there a correction in the software, or is this just the way they are being transmitted?

And: In the "Signal Browser" window, there is a slider bar at the bottom. I have not been able to find out what it's for.

Thanks!

 

[ka3jjz]

The sideways issue is a result of the soundcard not quite lining up with the timing of the signal. It can be adjusted using this procedure...

Fldigi Users Manual: WWV codec PPM measurement

www.w1hkj.com

And FLdigi has its own mailing list and Facebook page, viz

winfldigi groups.io Group

----------------- Group Description ----------------- This group was set up in 2008 by G3VFP purely to support Windows users of this multimode digital software originally developed for Linux, and ported to run within Windows. Please do not post off topic, and do not flame anyone, or use the...

groups.io

Log into Facebook

Log into Facebook to start sharing and connecting with your friends, family, and people you know.

www.facebook.com

where if you don't get answers to your FLDigi questions here, you will using those 2 links...Mike

 

[ka3jjz]

By chance were you trying to copy FAX in LSB? Generally most utilities use USB - that includes FAX stations. It's been a very long time since I did any FAX work, but I *think* that if you are receiving on the opposite sideband, you get reversed black/white like you did. Mike

 

[W4KRR]

By chance were you trying to copy FAX in LSB? Generally most utilities use USB - that includes FAX stations. It's been a very long time since I did any FAX work, but I *think* that if you are receiving on the opposite sideband, you get reversed black/white like you did. Mike

Yes, the LSB thing may have been the issue. I'll try it again when I'm done calibrating. Thanks for your help!