<html> <body> I'll second Avery on this.  When doing large pitch raises you will hear lots of beats, leaking from adjacent strings and sympathetically resonating from the  damped & undamped strings etc. When an individual string beats prominently you may have seating problems at the v-bar, a kink in the wire, or a lack of seating on the bridge.  There is a beat suppressor sold for uprights which essentially allows you to "level" strings by pushing them where they bend over the v-bar and a brass drift or a maple hammer shank can be used to seat strings on the bridge around the bridge pins. Utilization of ear plugs can help shut out a lot of exteraneous noise and make picking out the beats you are working with easier. Good luck, Andrew At 06:33 PM 9/25/2004 -0500, you wrote: <blockquote type=cite class=cite cite>Mark, If you're raising the piano 100 cents, is it possible you're hearing extremely different pitches leaking through the muted string(s)? I'd suggest pull everything up to pitch without much regard for clean unisons, false beats, etc. At least then you'll know it's a false beat problem. :-) Warning: you may need to pull it up more than once if you're not over-pulling to compensate for the pitch drop, which "might" not be a good idea on an old upright. At least, the first time. Avery At 05:28 PM 9/25/04, you wrote: <blockquote type=cite class=cite cite>Greetings...   New tuner here...   I am currently taking the Randy Potter Piano Tech Course. I am in the section of learning temperaments. A couple problems have arisen that I am sure you generous folks could help me with.   While working in the mid-section of the piano, I encounter this.. I have all the necessary outside strings muted and when I go to tune certain strings, one string sounds as if it is two strings with very wide beats. Although I know it is only one string. This phenomenon only happens in the mid-section.   I must therefore get under the piano and mute off that particular string between the bridge and the hammer. Sometimes this works, other times it doesn't do so well. I am wondering, could I have strings that need seating or something else, or just plain worn out.   Suggestions???   It is a Hackley upright. ~1945 and I am raising it ~ 100 cents     Also, any tips on how to hear beats more accurately???     Thank you in advance   Mark</blockquote></blockquote></body> </html>