CW with remote controlled Radio
The picture show TS-480 but CW features is the same for all setups
From v 1.44 the support for CW-operation in the system is considerable improved.
We have now inplemented a CW keyer in the Remoterig software to make CW operation possible even with longer Internet latencys and lot of Jitter. Earlier we where depending on using the Sidetone from the radio when operating CW. It was not very easy for the brain to handle the delayed sidetone
if the Internet latency was more than maybe 20-30 ms. With the keyer built in to the Remoterig box that problem is solved when the sidetone is generated locally in the box.
Besides the local sidetone there is also a function witch mutes the audio from the radio x ms after the dot or dash is sent (lf delay ms). This means that the sidetone generated from the radio will automatically be muted. Even if you can disable the sidetone in the radio there can be annoying clicks or other sounds that can be convenient to mute. The delay can be adjusted depending on the latency. A good start value is the same as the ping time between control and radio QTH.
Another important unique feature is a kind of adjustable Jitterbuffer for the the CW keyer at the radio end. This means that if you have a Internet connection where the latency is not constant, you can set a delay (in ms) before the keying of the radio is started. In this way the CW-keyer can reconstruct the transmission on the fly before it is sent. In this way the system will be much more tolerant against varying latencys (Jitter). It's the "key delay ms" in the Keyer Settings page". Longer delays gives
higher tolerans against jitter but the delay will also increase. Even if you have a good connection you could try with a low value. Remember that when you increase this value you must increase the "lf delay ms" value also with the same value if its used
Here you can listen to a CW transmission where the Jitter is random +- 10 ms
and here is the same transmission with the jitter correction activated ( "key delay ms" set to 50 ms).
http://www.remoterig.com/CW jitter with corr-100-10-50.wav
The CW keyer settings is done on the "Keyer Settings" page. The parameters are also described on the Common configs page.
If you want to control the the CW-speed via a Potentiometer you can mount one on the front of the RRC. You just need a linear pot. Value can be from 4,7 K up to 470K it's just act as a voltage divider. The pictures below is enough I think as instructions about how to install the Pot. The red wire is connected to 3V3 the black to GND the yellow is connected to the A/D input of the CPU.
If you don't want to use the PC-input leave those wires.
I made the input cable like this
Down below is a schematic describing how a interface to the PC can be done. There are lot of different solutions on the Internet, but this is very simple and can be implemented in the D-sub housing. No values are critical, just use what you have in the junkbox.
Below is the old way of direct keying described
But I recommend to use the way described above, if you use the RRC over the Internet, If you use them in a local LAN like setup you can use direct keying as described below.
|Cable from Paddle to RRC and from remote RRC to Radio.