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I'll try? to do it this weekend. Leon Robinson ?? K5JLR Political Correctness is a Political Disease. --- On Wed, 10/3/12, tubesnthings@... wrote: From: tubesnthings@... Subject: Re: [TekScopes] Tek 561A & Fairchild 766H/F To: TekScopes@... Cc: stvalnlbs@... Date: Wednesday, October 3, 2012, 7:33 PM ? Yes, Leon - I would be interested to see catalog pages. Have been looking for any kind of reference to this scope without much luck. It has been "red-tagged", apparently there is a bad tunnel diode in the time base... Not sure I'll ever fix it, but would like to know more. Has very unusual joystick-type trace positioning...wonder what for? Some kind of X-Y work? Panel layouts of the plug-ins resemble 3A72/3A1/3A2/3A6 and 3B3. Curious, to think that both scopes where used at the same facility. Tek for reference, Fairchild for economy and/or space savings by way of the smaller footprint of the cart? Or...?? Bernd ? In a message dated 10/3/2012 5:13:03 P.M. Pacific Daylight Time, leon-robinson@... writes: I can scan of the pages for the Fairchild mainframe and plugins from the 1964/65 catalog if you need them, sorry no manuals. Leon Robinson ?? K5JLR Political Correctness is a Political Disease. --- On Wed, 10/3/12, tubesnthings@... wrote: From: tubesnthings@... Subject: [TekScopes] Tek 561A & Fairchild 766H/F To: TekScopes@... Cc: stvalnlbs@... Date: Wednesday, October 3, 2012, 6:01 PM ? Tek 561A & Fairchild 766H/F, apparently lived at the same "R&D LAB". Plug-ins are mechanically?interchangeable and use interface connectors from the same manufacturer but with different pin count and orientation. The Fairchild is solid state, its cart lighter, smaller with crude tilt adjustment. The sheetmetal scope covers are textured and formed like Tek's. ?