I am still looking for clean and complete paper copies of the following two GE Datafile Bulletins:
Datafile 10002-3, "Interference Analysis Worksheet" Datafile 10008-5, "Measuring FM Deviation by the Bessel Null Method" Datafile 10002-3 apparently was a loose page that was included with one of GE's most informative Bulletins, 10002-2, "Radio-Frequency Interference (RFI) in Two-Way FM Radio Systems." The bulletin is available for download from the GE Master Index, but it lacks the 10002-3 worksheet. I have the complete GE Datafile on microfiche, but the worksheet is not included. Please, if you have a hard copy of the 10002-3 worksheet, I'd like to borrow it long enough to make a high-resolution scan into PDF so that it can be added to the GE Master Index. Datafile 10008-5 was written by James J. Carrington and published by General Electric in November 1967. This is a 9-page document that provides an excellent tutorial about using the Bessel function to calibrate deviation meters. Please understand that this request is for a specific document, not for general information about the topic. I do have this document on microfiche, but the quality of the film images is below my standard for Web publication. Please check your "LBI stashes" to see if you have either or both of the above documents in hard copy. If so, please contact me directly at (mycall) at verizon.net. Thanks! 73, Eric Lemmon WB6FLY
