Re: [digitalradio] Estimating multipath delays using Hellschreiber

2010-01-28 Thread John Becker, WØJAB
the last time I seem a real good multi path was back in the 19080's while using amtor. really made a mess of things. I would not mind getting looking into that again with all the good software we now have. Of course back then when I would talk about it the would ask me if I have been smoking th

[digitalradio] Estimating multipath delays using Hellschreiber

2010-01-27 Thread Tony
All, I've been studying Hellschreiber screenshots to estimate multipath delay. Delayed echoes via the ionosphere show up in the pixels that make up the vertical part of each Hell mode character i.e., letters appear as though they were printed twice with one slightly above the other. The locat