[Elecraft] What's wrong with Serial - my continuing RANT

[Don Wilhelm]

Folks,

This revalation about the RJ-45 jack being used and defined for use as an
RS-232 connector amplifies my point.  It is not reasonable to expect that
every RJ-45 jack is an RS-232 connector.  We know that they are used for
Ethernet connectors, Yaesu uses them for microphone connectors, they are
ofter used in telephone systems, etc. - so just by looking at the jack, it
is not possible to identify its use and pinout.

Similarly, the DE9 connector on a piece of equipment does not provide any
assurance that it is a serial port, let alone one conforming to the RS-232
standard.  Again, the K2 DE-9 connector is clearly labeled "AUX I/O".

73,
Don W3FPR


> -----Original Message-----
>
> The latest copy of the spec I had was EIA-232-F.  It did not
> specify the 8 pin modular connector.  EIA-561 covers the 8
> position modular plug when using it in an EIA-232 compatible
> system.  RJ-45 (Registered Jack) is defined in FCC part 68 and is
> a whole other ball of wax!
>
>