XPost: alt.ham-radio   
   From: kg6baj@gvcity.ampr.org   
      
   Why don't you try calling Grass Valley Group (AKA Tektronix) here in   
   the Nevada City / Grass Valley, Calif. area Phone 530-478-3000 ??   
      
   Address if needed is:   
      
   Grass Valley Group   
   400 Providence Mine Road   
   Nevada City, Ca. 95959   
      
      
      
      
      
      
   >R:100608/1311Z @:KG6BAJ.#NCA.CA.USA.NOAM #:12368 [Grass Valley] InterGate   
   >   
   >** NEWSGROUP: alt.electronics,alt.ham-radio   
   >** FROM     : katamasouth@hotmail.com (Terry)   
   >   
   >   
   >   
   >I attempted to straighten the shafts of a dual pot and managed to snap   
   >the outer shaft (for the front pot) right where it enteres the bushing   
   >rendering it unrepairable. DUMB DUMB DUMB   
   >   
   >The pot is Tektronix PN 311-1393-00 AKA Clarostat PN CM39702   
   >   
   >It's the INTENSITY/FOCUS control on a Tektronix USM-281C.   
   >   
   >There are two pots: 5K in the front (with a snapped outer shaft) and   
   >5M in the back. The 5M is separated by an inch or so from the front by   
   >a dielectric tube for it's elevated some 6 kV.   
   >   
   >I realigned the scope and it's extremely stable and accurate and I had   
   >planned to use it on the bench. Fortunately I snapped the shaft with   
   >intesity set just about right. However, for some "very snappy"   
   >measurements, a little more brightness on the screen sure would help!   
   >   
   >I have chased down all the Google sources for both PNs and no joy. One   
   >outfit in Canada had the pot on its website but it had been sold   
   >before I could get there! Drat!   
   >   
   >Any help would be most appreciated. Anyone out there with a dead   
   >USM-281C willing to strip out the pot? I will pass your palm with   
   >silver!   
   >   
   >TIA--   
   >   
   >Terry--WB4FXD   
   >Edenton, NC   
   >   
   >   
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   >   
      
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