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1 watt Morse transmitter - Schematic only, no circuit description
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2 Way Morse Practice Set - (electronic schematic / circuit added
2/05) |
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2-way Morse practice set - amateur radio construction projects….
[from Peter Parker's website] |
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30-Meter QRP Transmitter for Morse Code - This transmitters'
intended purpose is for morse-code only in 30 meter band (Tony van
Roon's 10Mhz)....[Tony van Roon's circuit] |
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A two-way Morse practice set - amateur radio construction
projects…. [from Peter Parker's website] |
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Analogue Electronic Key - This circuit uses two comparator that
are combined in what is called a window comparator, i.e. resistors R2, R5,
and R10 determine a voltage window within which the voltage
applied....[Published in Elecktor July/August 2010] |
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AVR Beacon Super Keyer - The keyer will send both "Normal" and "DX
mode" Feld-Hell, at the standard 122.5 bits/second, as well as half-speed,
quarter-speed and eigth-speed. The slower speeds are less affected by
multi-path,... |
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Code Practice Oscillator - Scroll to specific circuit. Above is the
schematic for a simple Morse code practice oscillator. This circuit was
originally built with 2N3904 transistors, however many different NPN transistors could
be substituted as required. (design idea added 08/08/08) |
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CW Beacon Keyer - (electronic schematic / circuit added 4/02) |
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CW Tone Keyer - Recently, I received email from an amateur wishing to key
his transmitter from the tone output of a Morse Code generator program. Although it is
possible to connect to a COM port on the back of a PC using a diode-transistor
configuration, this results in another precious COM port being used up. The tone keyer
is an ideal alternative and works very well. [Radio Amateur Society of Norwich] |
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Easy FM Keyer - Many no code Technician class amateurs who are struggling to
learn 5 WPM code simply do not have any avenue to get the necessary on the air
practice. Figure 1 is a simple circuit which will generate a 700 Hz tone into any FM
transceiver allowing an amateur to practice CW with another amateur on a 2 meter
simplex frequency....[Radio Amateur Society of Norwich] |
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Easy Morse Code Keyer - For those amateurs who are planning to learn their
code and upgrade, some type of on the air experience is virtually essential for the
higher code speeds. This means a paddle is needed as well as some type of keying
circuit to drive it. The circuit in figure 1 is based on the famous Curtis family of
morse keyer chips and has a proven record of dependability....[Radio Amateur Society
of Norwich] |
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Morse Adaptor for your VHF/UHF FM rig - Everyone knows that the best way to
practice Morse is to use it on the air. But how do you send Morse if you don’t
have a multimode HF or VHF transceiver? Well, you could hold a microphone up to
a code practice oscillator, and hold the PTT down while pressing the key, but it’s
very clumsy, and the transmitted tone is likely to be harsh. Clearly something
better is needed…. [from Peter Parker's website] |
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Morse Beacon - The beacon powers up in one of two states, depending on
whether it detects a serial lead on its serial port connection. If a serial lead is
detected then programming is permitted using a one way connection at 600 baud, 8 data
bits, no parity and one stop bit (this rather archaic choice of baud rate being
entirely down to the speed of the PIC’s EEPROM!) If no serial lead is....(added
04/04/04) |
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Morse Code Alarm Clock Modification - (Almost) Trivial application of an
AT90S2313 or ATtiny2313 in an alarm clock to change the alarm from "BEEP BEEP BEEP
BEEP BEEP BEEP BEEP BEEP...." to "WAKE UP" in Morse code. This was designed in
response to a request and is in daily use….... |
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Morse Code Beacon Keyer - This circuit stores a single morse code message as
bits in an EPROM chip, the message is sent to a relay which can key a CW transmitter.
The keyer can output either a one-shot message such as "CQ DX DE CALLSIGN", or a
continuous message. The continuous mode is useful for making beacons for low power (QRP)
and slow (QRSS) transmissions....[Designed by G. Forrest Cook] |
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Morse code display - Shematic only, no circuit description given [Jon Fick] |
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Morse Code Practice Keyer 2 - The speaker (LS1) can be any 8-ohm type up to
2-watts. Supply voltage for this circuit is up to 15 volts, but 12V is more desirable
if you choose to go with an adapter. If possible, try to use a mylar or polyester kind
of capacitor for C2… [Tony van Roon's circuit] |
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Morse Code Practice Oscillator - The speaker (LS) can be any 8-ohm type up
to 2-watts. C1 and C2 are ceramic capacitors. C3 is an electrolytic type. IC1 is a
CMOS MC1455P or equivalent. The cmos type consumes a lot less current when used with
the 9-volt battery, but if you don't want to spent the money then the LM555, NE555,
etc. are fine too and are pin-for-pin compatible with each other....[Tony van Roon's
circuit] |
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Morse Code Tutor - A program (23kb) written in C++. Morse code uses dot and
dash for communication. Still it is popularly used for communication is short wave
bands. The Archive contains program source code and executable.... |
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Morse Monitor - Electroinic circuit schematic…. [from Harry Lythall's
website] |
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Morse paddle keyer - Electroinic circuit design…. [from Harry Lythall's
website] |
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Morse practice oscillator - Schematic only, no circuit description
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PIC16F84 Based Morse Code Reader - (electronic schematic / circuit added
4/02) |
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PL Tone Encoder Board - If your local repeater has got you singing the PL
tone blues, then read on. For less than $10, an inexpensive PL tone generator can be
constructed that will bring new life into that old non-PL rig…. [Radio Amateur Society
of Norwich] |
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RF Actuated CW Monitor - amateur radio construction projects…. [from Peter
Parker's website] |
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Simple Morse Practice Oscillator Circuit - This will be my next homebrew
project, a morse practice oscillator circuit. 9W2AZV and I are going to build this as
we are preparing ourselves to perfect our Morse code sending/receiving skills. In the
spirit of amateur radio/ham, we will homewbrew….(schematic design added 08/08)
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Smooth Tone Clickless CW SideTone Generator - This circuit is about as good
as it gets for generating morse code tones. It may be used as a code practice
oscillator, a tone generator for a keyer, a sidetone oscillator for a CW transmitter
or an audio Modulated CW (MCW) generator for an FM transmitter or repeater....[G.
Forrest Cook] |
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Talking Morse Code Practice Computer - [Ken Staton's website] |
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Touch CPO - touch operated code practice oscillator using popular timer
IC555. Practice Morse code in a different way.... |
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Two Way Morse Practice Set - (electronic schematic / circuit added 2/05)
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Two-way Morse practice set - amateur radio construction projects….The system
consists of a pair of Morse practice oscillators connected by a piece of two-conductor
cable (Figure One). Pressing the key on one unit produces a sound in both units. The
receiving station can interrupt the sending station at any time by pressing their
key....[from Peter Parker's website] |
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