Re: Sugar Pop Morse Code

---------

From: R. D. Keys (rdkeys@csemail)
Date: Tue Sep 27 1994 - 16:40:20 EDT


>
> In message <9409271346.AA108854@csemail.cropsci.ncsu.edu> R. D. Keys writes:
> > >
> > > Here's the American Morse Code (as opposed to International or
> > > sometimes called Continental Code).
> > >
> Etc.
>
> Maybe someone can enlighten me since I've never heard American Morse.
> That is the same as was used in the telegraph lines in the early West,
> right? In the movies all you get is a series of clicks. My question is,
> how did you distinguish a dash? Did you hear a buzz when the sounder
> was down - or did you just infer a dash if you didn't get two clicks
> close together?

As I interpret it, the sounder, when properly set up in a sounding chamber
like the little half-clamshell things mounted on the pivoting arms or on
the thing that looks kinda like a half-clamshell on a lamp pedestle or
candlestick pillar, makes a sort of ringing click sound. If your ear
listens carefully, your mind fills in the ``tone sound'' as the sounding
chamber is ringing. The sounder itself has a tremendous mass of metal
that will carry a ring for a fairly long time. The sounder is mounted
on little brass points that helps to isolate it from the sounding chamber
so that it will ring longer.

If you want a real trip back into time, hook up your key through a
relay (used to do the keying) and a battery loop through a real morse
sounder in the sounding chamber. It REALLY gives one an 'OT feeling!

Your mind basically makes up the spacing fill, after a few minutes of
hearing the thing work.

>
> That's always bothered me because you sometimes see movies/etc where people
> communicate by knocking on walls and so forth. I know the "prisoner's code"
> used in Vietnam was based on a table of letters rather than individual
> dash/dots. You'd rap on the wall with a x,y coordinate in the table, which
> would give you a letter (ie, 4 raps pause 3 raps indicates row 4, column 3).

The movies are one thing, but the reality is that walls make pretty good
sounding boards just like a morse sounder. To see what I mean, mount a
keying relay on the wall about 2-3 inches off a stud and see how well the
wall rings when the relay clatters. An old car generator cutout or horn
relay works quite well, when adjusted correctly as a keying relay that
will make quite an imitation of a morse sounder, when mounted on a
board or the table or the wall.

>
>
> THANKS & 73 de WB5KXH
>
> ======= round up the usual disclaimers! =========
> Bob Wier - wier@merlin.etsu.edu
> keeper of the Adobe Photoshop, Icom Radio
> Motorola HC11, and Overland Trails mailing lists
>
>

Chuck K5FO or any of the other OF's want to fill further?

I only know what my sounder ``sounds like''. It is the one with the
clamshell mounted on a rotating/pivoting wall bracket of cast iron.
I don't know what the proper terminology for the thing is (:+{{.....

Bob
NA4G


Search QRP-L Archives

[ QRP-L Archive | ]
[ 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 ]

---------

This archive was generated by hypermail 2b29 on Fri Jun 02 2000 - 11:27:01 EDT

kd4ab@kd4ab.org