Ok, but the delay is not only on TX, but also on RX.
This problem is neither easy to explain nor fix, but there are solutions.
Look (or listen) to the audio of remoterig, and learn from them.
They have very good audio handlig of both SSB-audio and cw.
73 de SM2SXA

Yes, of course there are other solutions... but this should be fixed in ERS... I can run full sepctrum bandwidth, without any noticable delay, only audio is delayed by 2-3s ...

Weird:
If you you TX remote with monitor on, and release MOX too early, you hear the rest of your tx-audio on next MOX activation, even this is maybe 2-3 minutes later... so there is something in the buffer...

73 de Ernst
OE3IDE

My reference to remoterig was just to indicate that it is posdible to do high quality audio an even CW over an internet connection with moderate performance. I have run remoterig over cellphone network in rural areas, and it works very well. I did not in any way recommend to implement remoterig in eesdr, but just to tell that f remoterig can do it, it is possible for others to achieve the same performance. Eesdr have som job to do. 73 de SM2SXA

My guess it is some problem to do this with waterfall screen. Remoterig is working tranceivers without spectrum? Or maybe I am wrong. I think they find a solution for this. Flex radio? does that work with spectrum?
Sommarhälsn. från sm6usu Svante (just nu MM med sunsdr2 dx)

Yes, that works with Flex (on a level to work in a contest without issues). Also with ic-7300 and Kenwood remote...

I don´t think that the waterfal is the problem.
Commands to the rig and status from the rig, in remote operations, including waterfall, seems to respond quite ok.
Initialy the audio is also ok, but over time, say10 to 20 minutes of rceiving only, the audio is coming to the operators ears later and later, with more and more delay.
But the spectrum does not have that delay. You can see the spectrum from a QSO, when stations start and stop transmission, the audio comes after a long delay.
After half an hour of receivie only, the audio is delayed with several seconds.

Then, if PTT is activated for just briefly, the received audio is again coming in without delay.
So, when operating in receive mode, the delay is building up over time, but not for the waterfall or other status indicatiors.

I have not tried the TX audio for similar problems, but, i read that other operators report that when PTT is released, the transmitter stops sending before the last spoken word before PTT-release have been sent. The system should transmitt until the audio buffer is emptied. That indicates to me that there is isues in the TX handlig aswell.

73 de Sm2SXA /Urban

Hello guys,
I have the same problem as you have described. For me the biggest issue is the delay in TX. As most of you mentioned, after you stopped talking, you have to hold on the PTT for 2-3 s and then release it. This way you can even run contests (by the way I have the same problem with my Flex). For my Flex I implemented also Remoterig, so I run SmartSDR and in parallel I transfer the audio, PTT and some other stuff throught the RS232 ports. This works with the Flex. But I love my Sun!? So one solution for me is, not the best one, I used a Adruino to produce a variable switch off delay in my footswith. So I use the footswitch as normal, but the PTT stays the preset time still on. I know it is a workaround, but it is better then everything else so far using the Sun remotely. Otherwise I get alway confused using the Flex PTT, Sun PTT or my ICOM9700 PTT.
Now what I would love to do is, using the ERS, switch of the audio and run Remoterig in parallel with the ERS and using the RS232 ports for other stuff. My problem here, and that Question goes to Rome, when I am using ERS the Mic2 and the headphone at the physical radio is switched off. IS TEHRE ANY WAY TO ACTIVATE IT?!
If yes I would remove my Flex, but even the workarround works, it is quite anoiing to have the delay runing a contest.

I would love to hear from anyone a way to activate the Mic2 and the headphone plug at the radio using it remote.

And regarding the discussion about jitter or buffer, hell I have no idea and it is fare out of my knowledge.

73 de DB3FJ
Karsten

maybe add a function where the user can add a variable "hang" as in a delay.

I know that the flex guys solved the CW via remote to make a hangtime as people running CW and SSB with PA had lotz off issues.
With a hang time i.e the PA is not going on/off/on/off but stays in tx for a while until you are finished transmitting.

I've noticed some very strange delays using windows 10 and FT8 in remote operation. whereas audio delay can reach 2-3 seconds.
In Linux no issues and EESDR3 is on par with RemoterRg delays.
W7RH

Hi!

@Roman
Any plans to fix this? Can u replicate the issue?
Remote operation is one of THE benefits using SunSDR radios... its a pitty, that this does not work.

73 de Ernst
OE3IDE

Hello Ernst.
Loooong time ago we've confirmed the fact that SSB operation via ERS might have 2-3 second delays.
We plan to fix it in the next releases of the ERS.

Roman, thats good news! Thank you for the update.

73 de Ernst
OE3IDE

P.S.
Hope to meet you in Friedrichshafen 2024 ;-)