Chuck,
Your answer is, "it depends".
Basically, the limiting factor is the quality of the two internet
providers being used plus the inherent latency in any kind of internet
situation.
You will have to add:
the internet latency between the two points (basically ping the other
router from the control location)
+ the latency inherent in the SIP connection between the two RRC's
(about 20 ms)
+ the latency you add to your RRC settings in the keyer and/or advanced
settings (which can be from zero to another 20-30 ms if needed)
The RemoteRig RRC gets around the sidetone and latency issue on the user
end by having its own internal keyer that provides your sidetone. It
then sends a command stream in its own protocol to the radio RRC where
in turn the radio RRC keys the transmitter. You have no apparent latency
from the user side, but obviously this advantage decreases as you
increase code speed. You can also key the RRC's keyer using a paddle,
which is otherwise difficult to do in a remote situation. You can also
key the RRC using an external keyer if you wish.
One of our users has used this system at about 40 wpm QSK and I work a
lot of DX at 30+ with no problem, but your mileage will vary.
73,
Mitch DJ0QN
On 19.09.2013 19:30, W5UXH wrote:
Apparently my mailman subscription disappeared, so this is a second attempt
to get this query out there:
Can anyone comment on the performance of the remote rig setup for higher
speed CW? If I use a keyboard keyer on the K3/0 end and CW+ QRQ mode, other
than the latency that of course is network dependent, can I expect the
performance to be close to that when operating the K3 directly?
On the K3/0 end I assume I would hear a local sidetone from the K3/0 and
there would not be a sidetone coming back from the remote end? Can I expect
the keying quality from the remote K3 to be the same as when operating the
K3 directly?
I would really like to hear from someone who actually operates QRQ speeds on
the order of 50+ WPM who has used this setup, but perhaps that is wishing
for too much.
But how about 30 wpm or so in a "QSK style" QSO?
Chuck, W5UXH
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Mitch Wolfson
DJØQN / K7DX
Neubiberger Str. 21, 85640 Putzbrunn
Skype: mitchwo - Home:+49 89 32152700 - Mobile:+49 172 8374436
Echolink: 3001 - IRLP: 5378
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