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Gerolf Ziegenhain 2015-07-08 21:33:02 +02:00
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irmc - Internet Relay Morse Code
IRMC stands for Internet Relay Morse Code and is an implementation of [MOIP](
It implements the [CWCom protocol](
as adopted by [MorseKOB](
You can try out the software in a [browser]( using Java.
![Screenshot on OSX](/doc/screenshot.png?raw=true "Screenshot")
# How to build?
## Install dependency: morse keyer library
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For the USB serial devices you need a PL2303 driver
(i.e. [PL2303_Serial-USB_on_OSX_Lion.pkg](
## Testing
./irmc 7890 2348 test
Or you may want to use tcpdump, i.e.:
sudo tcpdump -i all -vvvv "host"
# How to use:
`./irmc -h`
## Hardware interface options
# Hardware interface options
A good description on how to build different interfaces (telegraph key, sounder or both)
is given on the [MorseKOB Website](
Landline telegraphs use "closed circuits" for communications; if you have built one at home,
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[layout of pins](
Connecting the palm radio: keep an eye on the grounding :)
RS232 DB9 Function
DTR 4 Manual Key / paddle common
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# Changelog
* v0.3 [zip]( - commandline option cleanup
* v0.2 [zip]( - ported to debian wheezy and osx yosemite, DG6FL
* v0.1 [zip]( - original version, VE7FEB