>Rich said:
>
>"The same person said that Ni-Cr alloys have less RF resistance as frequency
>increases. Do you believe this, Colin?"
>
>Rich, I do not know if that was said, or if the statement was in context.
>Since I did not study this in school, I will have to answer it for myself -
>assuming I have enough intellect to run a test and to understand what I
>observe.
>
>Once I complete a project I am working on, I can clean off my desk and build
>a test fixture to connect to my Tektronix 2710 Spectrum Analyzer with
>tracking generator. On the other hand, if my results are not consistent
>with what you want me to conclude, will you ridicule me because I did not
>take AC circuit - analysis at Cal Tech?
>
>I am not quite sure why this particular course is particularly relevant,
>though, since I presume that many of the existing amplifiers were designed
>by engineers who had taken this course, and they were all wrong, Since you
>were the first person to understand this stuff, it would seem that your
>textbooks and teachers, and those that preceeded you, should not be given
>much weight, anyway.
>
** General Electric engineer G. W. Fyler was apparently the first person
to write much about parasitics, (''Parasites in Transmitters'',
Institute of Radio Engineers journal. Sept. 1935). H. F. Dittrich was
apparently the second, ; *Tubes for R. F. Heating*; 1958
N.V. Phillips Gloeilaampenfabrieeken--Eindhoven, the Netherlands. Section
5.8, 'Parasitic Suppression Circuits' p.96.
F.. E. Handy experimentally determined that resistance-wire seemingly
worked well for building vhf parasitic suppressor inductors: "The
combination of both resistance and inductance is very effective in
limiting parasitic oscillations to a negligible value of current." (p.72,
1926 Radio Amateur Radio Handbook) Thus, I am a Johnny come lately.
cheers, Colin
>Once you set the standard that the basis for all knowledge on amplifiers is
>Rich Measures, then any other source must necessarily be wrong.
>
> Colin K7FM
- R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K,
www.vcnet.com/measures.
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