I have been working on getting my copy skills up from 40 WPM to 50 WPM using the RufzXP software. I recently maxed out at 44 WPM and my top score was in the 8,000 points range (still too many errors, but a 10,000+ score is within reach with effort). But what I am finding is that I become dyslexic at speeds in excess of 40 WPM. I run practice QSOs at 45-50 WPM with other software. QSO speed is a little easier to maintain because of familiarity of words and context. Fewer numbers come at you with conversational Morse. But with the RufzXP software it is all callsigns in a "contest" type format. You have only two opportunities to hear the call (F6 function key stroke allows a single repeat). Callsigns can be quite tricky at those speeds, especially long DX callsigns with a /QRP or /P at the end, and heaven forbid a /QRP/4 or something. But those score tons of points! Anyway, what I am finding is that at these higher speeds, I am hearing the first TWO characters fine, and the last one or two characters fine. So, a 1x2 or 2x1 US callsign like N4XX as an example is a piece of cake. I also do OK with 1x3 or 2x2 calls, but this is where a problem sometimes pops up, and longer calls even more so. I am doing my best to copy behind, which I think is the critical method at higher speeds. If I were to try to type while I copy, my mind would be too distracted and I'm sure to miss things. (That method does work OK if you are willing to use F6 a lot, because you can type all that you hear and fill in the rest the second go.) But I am especially finding that the middle characters on longer calls get backwards in my mind. I will hear WA9XLX for example, and pride myself that I copied it all as I was hearing it, but when it comes to replaying it in my mind (the copying behind part) I will not remember the 9 and maybe the X and L will be flip-flopped. I might mistake the nine for a 0, or I might flip it backwards and think I heard a 1, or I might even go as far as thinking I heard a FOUR. (4 because dididididah and dahdahdahdahdit are both 1-4 combinations). In other words, by the time I copied the entire transmission and even if I hear each individual element correctly, MY SHORT TERM MEMORY STORAGE isn't adequate. It seems my brain does a very quick dump of all the middle stuff in the callsign and only notes the beginning and end stuff. I have a theory on this. Being a ragchewer and not coming up in the "contester" ranks so much (only casually) I have learned to analyze code being sent to me, even at higher speeds, by pulling out the important stuff. If someone sent "I live in Philadelphia, PA" at 45-50 WPM, I might only hear "LV N PHLDLPHIA, PA but I get enough to realize what was said. If they sent "RIG HERE IS ICOM 746 PRO" I might get "RG HR 746 PRO" and know exactly what was said. My brain has been conditioned to pull out the important stuff. With callsigns, ALL of it is important, and very random (Well, there are patterns and prefixes that are known but that is only a little help). I wonder if anyone else has a similar problem and if there is a method for enhancing short term memory storage to prevent the "dumping" that I experience. I have a goal of 50+ WPM reliable copy. This isn't because contesters really operate at that speed (other than sending 599 and TEST sped up). It is just a personal goal of mine to break the plateau.