Can we configure link based IPMP in private connectivity in Oracle RAC Post: 302771045

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Operating Systems Solaris Can we configure link based IPMP in private connectivity in Oracle RAC Post 302771045 by DGPickett on Tuesday 19th of February 2013 11:56:00 AM

02-19-2013

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Actually, it will take about 3.2 seconds on average coax, because it does not propagate at full light speed.

When at Honeywell, the IRS bought additional one microsecond cycle core memory for their H-2050 from Cambridge Memories. Somehow someone made some parallel interface cables with slower dialectrics or different effective conducter diameters: slow coax! While they did not exceed cable length, the timing was too late. As my friend Jasper Farrington told them, 9 nanoseconds late is still late. Late means broken.

The ARRL Handbook I perused throught my youth ARRL Handbook 2013 had interesting tables on how much to shorten an antenna from the nominal quarter wave length for different conductor diameters and such. Interestingly, a quarter wave whip over a ground plane is 75 ohms like many flavors of coax, and a half wave antenna with the ends connected together is 300 ohms, so you can make a nice antenna from 300 ohm flat lead, shorting the ends and attaching the 300 ohm feed in the middle, or sometimes a little off middle to widen the banwidth for shorter and longer half waves. You see this on a lot of FM sets, where the 100 MHZ into 300 million meters per second gives you a 1.5 meter antenna, but a bit shorter as the propagation is a bit slow. These work on VHF tv as well, as FM is adjacent to channel 6, which many FM radios can hear at the bottom.

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LEARN ABOUT OSX

first

FIRST(1)						      General Commands Manual							  FIRST(1)

NAME

       first - Yagi-Uda project quick antenna builder

SYNOPSIS

       first filename  elements f_min f_design f_max f_step diameter

DESCRIPTION

       The  program  first  is	one  of  a  number of executable programs that forms part of a set of programs, collectively known as the Yagi-Uda
       project , which were designed for analysis and optimisation of Yagi-Uda antennas.  first is used to define an antenna quickly, if  you  are
       not  interested	in  analysing a specific design (in which case use input ) but need to get a design that is half-way reasonable so that it
       may be optimised. It is much faster in use (since its not interactive) than input The design methodology that first is  the  DL6WU  antenna
       designs,  which	are  valid  for  10  or more elements, although first will calculate for any number of elements. DL6WU reccomends a folded
       dipole, but the designs here are for a simple dipole, since I don't yet know how to calculate the self  and  mutual  impedances	of  folded
       dipoles.

LIMITATIONS

       Filenames, including full path, can't exceed 90 characters.

       Does not take into account the variation of impedance of a dipole with change in wavelength/diameter of elements.

FILES

       filename 	 Yagi description, created by first.
       filename.out	 Binary data file, created by yagi.
       filename.dat	 Performance of antenna, created by output.
       filename.gai	 Gain of antenna, created by output.

       The  DOS  .EXE files as distributed require a 387 maths coprocessor to be present and will not run without it. A 486, Pentium, and I assume
       later processors of this series will run it without any extra hardware.

PLATFORMS

       Both DOS and and Unix versions have been built. The DOS version as distributed requires a 386 PC with a 387 maths coprocessor. The DOS ver-
       sion is no longer being developed, so the DOS executables included with the distribution are not upto date with the current source code.

AUTHORS

       Dr.  David  Kirkby  G8WRB  (david.kirkby@onetel.net).   with  help  with  the  conversion  to  the DOS/PC enviroment from Dr. Joe Mack NA3T
       (mack@fcrfv2.ncifcrf.gov)

SEE ALSO

       input(1), output(1), yagi(1), optimise(1).

BUGS

       Bugs should be reported to: David Kirkby G8WRB (david.kirkby@onetel.net).  Bugs tend actually to be fixed if they can be isolated, so it is
       in your interest to report them in such a way that they can be easily reproduced.

       If the input file is edited manually and done incorrectly, there can be unpredictable results.

       Options are not checked for sensible numbers. A negative length can be entered!

Version 1.10							  Fri Dec  2 1994							  FIRST(1)