Subj : Re: Storage
To : Roy Witt
From : Ed Vance
Date : Wed Jul 02 2014 04:11 pm
07-01-14 13:08 Roy Witt wrote to Ed Vance about Storage
RW> @MSGID: <
[email protected]>
Howdy! Roy,
-snip-
EV>> . = Low Tone
RW>> Dit - high tone
EV>> - = High Tone
RW>> Dah - low tone
EV> I didn't know of a FSK CW Standard when I chose what Tone for the
EV> Morse Code Elements.
EV> I saw Your line of CW as a period being lower in elevation than the
EV> hyphen was, so I assigned the Tones as they looked to me on my
EV> screen.
RW> I used the way they would sound vs what they looked like.
I used Audio Frequency Shift Morse Code on HF SSB to ID my station.
On HF SSB I listened to a W1AW RTTY broadcast and adjusted the Mark and
Space Pots on my 'Rube Goldberg' Audio RTTY Demodulator until the two
LEDs lit up and I could see Text being printed on my TV set screen.
Then, while still in RX Mode, IIRC I would adjust the Pots for the Mark
and Space Tones on my 'Rube Goldberg' Audio Frequency Shift Oscillator
to light up the LED for Mark on the Demodulator with the Key UP, and
the LED for Space with the Key DOWN.
When the W1AW broadcast was over I switch to TX and typed a line for
CQ , my Call Sign and typed K at the end and got answered by someone
and had my first HF RTTY QSO.
I have no idea what frequency I had set the Pots on the AFSK Osc for,
I just matched the tones of what worked to receive the W1AW broadcast.
At least the Shift was 850 cps and to me that is all that mattered.
IIRC the lower tone is used for the Space and the higher tone is Mark.
-snip-
EV> The Plastic? (Phenolic?, Bakelite?) Base the Key was mounted on
EV> allowed the Knob on the Key Lever to extend over the operating table,
EV> instead of over the Base, and to use the Key to send CW I would have
EV> to hold the other end of the Key down so it wouldn't flip up and down
EV> when I was sending CW.
RW> I fixed that problem by mounting the key to a 1/2" thick brass
RW> plate with rubber feet.
EV> I learned of a 'Tip' to reverse the Base so the Knob would be over
EV> some of the Base and I wouldn't have to hold the Key down when I used
EV> it, the 'Tip' IIRC was printed in a A.R.R.L. Book called "Hints and
EV> Kinks".
RW> You could have done as I did, but instead use old wheel weights
RW> (lead and antimony) to make yourself a mounting plate.
I'm a cheap LID Roy, Brass cost $$$$$$ , using a screwdriver to loosen
the two screws holding the key to the base, and to tighten them back
just cost me a little energy. <GRIN>
73
NNNN
... Old MacDonald had a computer with an EIA I/O
--- MultiMail/MS-DOS v0.49
--- SBBSecho 2.12-Linux
* Origin: telnet &
http://cco.ath.cx - Dial-Up: 502-875-8938 (1:2320/105.1)
