# Simulcast buffer value issue
**URL:** https://community.allstarlink.org/t/simulcast-buffer-value-issue/13998
**Category:** AllStarLink
**Created:** [February 13, 2018, 9:43am UTC](https://community.allstarlink.org/t/simulcast-buffer-value-issue/13998 "2018-02-13T09:43:42Z")
**Posts on this page:** 8
**Page:** 2
### Author:  [@ARS\_W5OMR](https://community.allstarlink.org/u/ARS_W5OMR)
#### Post date: [February 22, 2018, 2:43pm UTC](https://community.allstarlink.org/t/simulcast-buffer-value-issue/13998/21 "2018-02-22T14:43:09Z")
That’s probably a latency in the audio section of the PC being used.
A buddy had the same issues while operating his HF station, remote. After a few minutes, the latency grew and grew… He used WWV (he lives in West Central OK) as a time base…
His solution was to get a more “robust” (read: Turtle Beach) sound card. This was in his desktop at the house.
It might not be a software problem, as much as a Hardware issue.
I don’t remember if you said this was on an RTCM or not but I know one is involved.
I believe I would check more on all audio devices involved.
> **···**
>
> On Feb 22, 2018 12:11 AM, “Hayden Honeywood” [haydenph91@gmail.com](mailto:haydenph91@gmail.com) wrote:
>
> > * * *
> >
> > App\_rpt-users mailing list
> >
> > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> >
> > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> >
> > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> >
> > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> I’ve made a YouTube video with clips from a single conversation I had this morning on the repeater. The audio was recorded on my dashcam.
>
> As can be heard in the video, when I start the conversation, the audio delay is nil, or very little when unkeying. However, by the time I’m finished (I think the conversation lasted about 20 minutes) the audio delay is out to 4 or 5 words!
>
> We were both using the same repeater. We have a repeater linked in from another location. I’ve noticed when talking to someone via that method, the audio delay issue does not build up so quickly.
>
> Hopefully this explains a bit better the issue I’m having.
>
> [https://youtu.be/KG3GgaHVWbI](https://youtu.be/KG3GgaHVWbI)
>
> Regards
>
> Hayden VK7HH
---
### Author:  [@Ve7lyd](https://community.allstarlink.org/u/Ve7lyd)
#### Post date: [February 22, 2018, 3:44pm UTC](https://community.allstarlink.org/t/simulcast-buffer-value-issue/13998/22 "2018-02-22T15:44:40Z")
Ya,
To me this seems like a server horsepower related problem. Using RTCM’s I don’t think the soundcard is used at all, its all handled by the cpu.
I use this guy (Quad Core Atom) on 5 of my deployments and it has enough hardware to run a 5rx and 2tx system:
[http://asrock.pc.cdn.bitgravity.com/Download/e-catalog/iBOX-210.pdf](http://asrock.pc.cdn.bitgravity.com/Download/e-catalog/iBOX-210.pdf)
Cheers,
Jesse
> **···**
>
> On Feb 22, 2018 12:11 AM, “Hayden Honeywood” [haydenph91@gmail.com](mailto:haydenph91@gmail.com) wrote:
>
> > * * *
> >
> > App\_rpt-users mailing list
> >
> > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> >
> > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> >
> > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> >
> > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> I’ve made a YouTube video with clips from a single conversation I had this morning on the repeater. The audio was recorded on my dashcam.
>
> As can be heard in the video, when I start the conversation, the audio delay is nil, or very little when unkeying. However, by the time I’m finished (I think the conversation lasted about 20 minutes) the audio delay is out to 4 or 5 words!
>
> We were both using the same repeater. We have a repeater linked in from another location. I’ve noticed when talking to someone via that method, the audio delay issue does not build up so quickly.
>
> Hopefully this explains a bit better the issue I’m having.
>
> [https://youtu.be/KG3GgaHVWbI](https://youtu.be/KG3GgaHVWbI)
>
> Regards
>
> Hayden VK7HH
---
### Author:  [@Sam](https://community.allstarlink.org/u/Sam)
#### Post date: [February 22, 2018, 3:44pm UTC](https://community.allstarlink.org/t/simulcast-buffer-value-issue/13998/23 "2018-02-22T15:44:48Z")
I have been battling a similar issue with 3 RTCM units in mixed mode, not voted, miles apart on different frequencies.
It’s not a sound card issue. The sound card doesn’t come into play on a voted system.
What seemed to fix mine, was to move the buflen command into the node stanza in voter.conf. I haven’t confirmed it yet but it seems to be the case.
Not even sure if that is even an issue on voted systems but I thought I’d put in my whole two cents.
Sam
k8sn
> **···**
>
> On Feb 22, 2018 09:43, “ARS W5OMR” [ars.w5omr@gmail.com](mailto:ars.w5omr@gmail.com) wrote:
>
> > That’s probably a latency in the audio section of the PC being used.
>
> > A buddy had the same issues while operating his HF station, remote. After a few minutes, the latency grew and grew… He used WWV (he lives in West Central OK) as a time base…
>
> >
>
> > His solution was to get a more “robust” (read: Turtle Beach) sound card. This was in his desktop at the house.
>
> >
>
> > It might not be a software problem, as much as a Hardware issue.
>
> >
>
> > I don’t remember if you said this was on an RTCM or not but I know one is involved.
>
> >
>
> > I believe I would check more on all audio devices involved.
>
> >
>
> > * * *
> >
> > App\_rpt-users mailing list
> >
> > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> >
> > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> >
> > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> >
> > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> On Feb 22, 2018 12:11 AM, “Hayden Honeywood” [haydenph91@gmail.com](mailto:haydenph91@gmail.com) wrote:
>
> > * * *
> >
> > App\_rpt-users mailing list
> >
> > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> >
> > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> >
> > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> >
> > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> I’ve made a YouTube video with clips from a single conversation I had this morning on the repeater. The audio was recorded on my dashcam.
>
> As can be heard in the video, when I start the conversation, the audio delay is nil, or very little when unkeying. However, by the time I’m finished (I think the conversation lasted about 20 minutes) the audio delay is out to 4 or 5 words!
>
> We were both using the same repeater. We have a repeater linked in from another location. I’ve noticed when talking to someone via that method, the audio delay issue does not build up so quickly.
>
> Hopefully this explains a bit better the issue I’m having.
>
> [https://youtu.be/KG3GgaHVWbI](https://youtu.be/KG3GgaHVWbI)
>
> Regards
>
> Hayden VK7HH
---
### Author:  [@Ve7lyd](https://community.allstarlink.org/u/Ve7lyd)
#### Post date: [February 22, 2018, 3:47pm UTC](https://community.allstarlink.org/t/simulcast-buffer-value-issue/13998/24 "2018-02-22T15:47:37Z")
I should add to my last post that I use a dual NIC server. One RTCM is connected directly to the server to provide timing only. The other NIC ties to the network with the other RTCM’s that have radios attached.
Cheers,
Jesse
> **···**
>
> On Feb 22, 2018 12:11 AM, “Hayden Honeywood” [haydenph91@gmail.com](mailto:haydenph91@gmail.com) wrote:
>
> > * * *
> >
> > App\_rpt-users mailing list
> >
> > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> >
> > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> >
> > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> >
> > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> I’ve made a YouTube video with clips from a single conversation I had this morning on the repeater. The audio was recorded on my dashcam.
>
> As can be heard in the video, when I start the conversation, the audio delay is nil, or very little when unkeying. However, by the time I’m finished (I think the conversation lasted about 20 minutes) the audio delay is out to 4 or 5 words!
>
> We were both using the same repeater. We have a repeater linked in from another location. I’ve noticed when talking to someone via that method, the audio delay issue does not build up so quickly.
>
> Hopefully this explains a bit better the issue I’m having.
>
> [https://youtu.be/KG3GgaHVWbI](https://youtu.be/KG3GgaHVWbI)
>
> Regards
>
> Hayden VK7HH
---
### Author:  [@Kc2irv](https://community.allstarlink.org/u/Kc2irv)
#### Post date: [February 22, 2018, 3:52pm UTC](https://community.allstarlink.org/t/simulcast-buffer-value-issue/13998/25 "2018-02-22T15:52:12Z")
I do not think server horsepower is the issue. I am running three TX/RX simulcast sites off of a Pi3 and when I look at the system resources used it isn’t working very hard.
> **···**
>
> On Thu, Feb 22, 2018 at 10:47 AM, Jesse Lloyd [ve7lyd@gmail.com](mailto:ve7lyd@gmail.com) wrote:
>
> > I should add to my last post that I use a dual NIC server. One RTCM is connected directly to the server to provide timing only. The other NIC ties to the network with the other RTCM’s that have radios attached.
> >
> > Cheers,
> > Jesse
>
> > On Feb 22, 2018, at 6:43 AM, ARS W5OMR [ars.w5omr@gmail.com](mailto:ars.w5omr@gmail.com) wrote:
>
> > > That’s probably a latency in the audio section of the PC being used.
>
> > > A buddy had the same issues while operating his HF station, remote. After a few minutes, the latency grew and grew… He used WWV (he lives in West Central OK) as a time base…
>
> > >
>
> > > His solution was to get a more “robust” (read: Turtle Beach) sound card. This was in his desktop at the house.
>
> > >
>
> > > It might not be a software problem, as much as a Hardware issue.
>
> > >
>
> > > I don’t remember if you said this was on an RTCM or not but I know one is involved.
>
> > >
>
> > > I believe I would check more on all audio devices involved.
>
> > >
>
> > > * * *
> > >
> > > App\_rpt-users mailing list
> > > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> > > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> > >
> > > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> > > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> > * * *
> >
> > App\_rpt-users mailing list
> >
> > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> >
> > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> >
> > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> >
> > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> On Feb 22, 2018 12:11 AM, “Hayden Honeywood” [haydenph91@gmail.com](mailto:haydenph91@gmail.com) wrote:
>
> > * * *
> >
> > App\_rpt-users mailing list
> >
> > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> >
> > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> >
> > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> >
> > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> I’ve made a YouTube video with clips from a single conversation I had this morning on the repeater. The audio was recorded on my dashcam.
>
> As can be heard in the video, when I start the conversation, the audio delay is nil, or very little when unkeying. However, by the time I’m finished (I think the conversation lasted about 20 minutes) the audio delay is out to 4 or 5 words!
>
> We were both using the same repeater. We have a repeater linked in from another location. I’ve noticed when talking to someone via that method, the audio delay issue does not build up so quickly.
>
> Hopefully this explains a bit better the issue I’m having.
>
> [https://youtu.be/KG3GgaHVWbI](https://youtu.be/KG3GgaHVWbI)
>
> Regards
>
> Hayden VK7HH
---
### Author:  [@Sam](https://community.allstarlink.org/u/Sam)
#### Post date: [February 22, 2018, 4:48pm UTC](https://community.allstarlink.org/t/simulcast-buffer-value-issue/13998/26 "2018-02-22T16:48:24Z")
DIAL or Hamvoip?
> **···**
>
> On Feb 22, 2018 10:52, “Joe Moskalski” [kc2irv@gmail.com](mailto:kc2irv@gmail.com) wrote:
>
> > I do not think server horsepower is the issue. I am running three TX/RX simulcast sites off of a Pi3 and when I look at the system resources used it isn’t working very hard.
>
> > * * *
> >
> > App\_rpt-users mailing list
> >
> > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> >
> > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> >
> > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> >
> > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> On Thu, Feb 22, 2018 at 10:47 AM, Jesse Lloyd [ve7lyd@gmail.com](mailto:ve7lyd@gmail.com) wrote:
>
> > I should add to my last post that I use a dual NIC server. One RTCM is connected directly to the server to provide timing only. The other NIC ties to the network with the other RTCM’s that have radios attached.
> >
> > Cheers,
> > Jesse
>
> > On Feb 22, 2018, at 6:43 AM, ARS W5OMR [ars.w5omr@gmail.com](mailto:ars.w5omr@gmail.com) wrote:
>
> > > That’s probably a latency in the audio section of the PC being used.
>
> > > A buddy had the same issues while operating his HF station, remote. After a few minutes, the latency grew and grew… He used WWV (he lives in West Central OK) as a time base…
>
> > >
>
> > > His solution was to get a more “robust” (read: Turtle Beach) sound card. This was in his desktop at the house.
>
> > >
>
> > > It might not be a software problem, as much as a Hardware issue.
>
> > >
>
> > > I don’t remember if you said this was on an RTCM or not but I know one is involved.
>
> > >
>
> > > I believe I would check more on all audio devices involved.
>
> > >
>
> > > * * *
> > >
> > > App\_rpt-users mailing list
> > > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> > > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> > >
> > > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> > > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> > * * *
> >
> > App\_rpt-users mailing list
> >
> > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> >
> > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> >
> > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> >
> > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> On Feb 22, 2018 12:11 AM, “Hayden Honeywood” [haydenph91@gmail.com](mailto:haydenph91@gmail.com) wrote:
>
> > * * *
> >
> > App\_rpt-users mailing list
> >
> > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> >
> > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> >
> > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> >
> > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> I’ve made a YouTube video with clips from a single conversation I had this morning on the repeater. The audio was recorded on my dashcam.
>
> As can be heard in the video, when I start the conversation, the audio delay is nil, or very little when unkeying. However, by the time I’m finished (I think the conversation lasted about 20 minutes) the audio delay is out to 4 or 5 words!
>
> We were both using the same repeater. We have a repeater linked in from another location. I’ve noticed when talking to someone via that method, the audio delay issue does not build up so quickly.
>
> Hopefully this explains a bit better the issue I’m having.
>
> [https://youtu.be/KG3GgaHVWbI](https://youtu.be/KG3GgaHVWbI)
>
> Regards
>
> Hayden VK7HH
---
### Author:  [@Kc2irv](https://community.allstarlink.org/u/Kc2irv)
#### Post date: [February 22, 2018, 4:52pm UTC](https://community.allstarlink.org/t/simulcast-buffer-value-issue/13998/27 "2018-02-22T16:52:16Z")
Hamvoip
> **···**
>
> On Feb 22, 2018 11:48 AM, “Sam Nabkey” [sam.nabkey@gmail.com](mailto:sam.nabkey@gmail.com) wrote:
>
> > DIAL or Hamvoip?
>
> > * * *
> >
> > App\_rpt-users mailing list
> >
> > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> >
> > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> >
> > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> >
> > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> On Feb 22, 2018 10:52, “Joe Moskalski” [kc2irv@gmail.com](mailto:kc2irv@gmail.com) wrote:
>
> > I do not think server horsepower is the issue. I am running three TX/RX simulcast sites off of a Pi3 and when I look at the system resources used it isn’t working very hard.
>
> > * * *
> >
> > App\_rpt-users mailing list
> >
> > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> >
> > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> >
> > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> >
> > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> On Thu, Feb 22, 2018 at 10:47 AM, Jesse Lloyd [ve7lyd@gmail.com](mailto:ve7lyd@gmail.com) wrote:
>
> > I should add to my last post that I use a dual NIC server. One RTCM is connected directly to the server to provide timing only. The other NIC ties to the network with the other RTCM’s that have radios attached.
> >
> > Cheers,
> > Jesse
>
> > On Feb 22, 2018, at 6:43 AM, ARS W5OMR [ars.w5omr@gmail.com](mailto:ars.w5omr@gmail.com) wrote:
>
> > > That’s probably a latency in the audio section of the PC being used.
>
> > > A buddy had the same issues while operating his HF station, remote. After a few minutes, the latency grew and grew… He used WWV (he lives in West Central OK) as a time base…
>
> > >
>
> > > His solution was to get a more “robust” (read: Turtle Beach) sound card. This was in his desktop at the house.
>
> > >
>
> > > It might not be a software problem, as much as a Hardware issue.
>
> > >
>
> > > I don’t remember if you said this was on an RTCM or not but I know one is involved.
>
> > >
>
> > > I believe I would check more on all audio devices involved.
>
> > >
>
> > > * * *
> > >
> > > App\_rpt-users mailing list
> > > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> > > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> > >
> > > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> > > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> > * * *
> >
> > App\_rpt-users mailing list
> >
> > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> >
> > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> >
> > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> >
> > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> On Feb 22, 2018 12:11 AM, “Hayden Honeywood” [haydenph91@gmail.com](mailto:haydenph91@gmail.com) wrote:
>
> > * * *
> >
> > App\_rpt-users mailing list
> >
> > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> >
> > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> >
> > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> >
> > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> I’ve made a YouTube video with clips from a single conversation I had this morning on the repeater. The audio was recorded on my dashcam.
>
> As can be heard in the video, when I start the conversation, the audio delay is nil, or very little when unkeying. However, by the time I’m finished (I think the conversation lasted about 20 minutes) the audio delay is out to 4 or 5 words!
>
> We were both using the same repeater. We have a repeater linked in from another location. I’ve noticed when talking to someone via that method, the audio delay issue does not build up so quickly.
>
> Hopefully this explains a bit better the issue I’m having.
>
> [https://youtu.be/KG3GgaHVWbI](https://youtu.be/KG3GgaHVWbI)
>
> Regards
>
> Hayden VK7HH
---
### Author:  [@Sam](https://community.allstarlink.org/u/Sam)
#### Post date: [February 22, 2018, 6:22pm UTC](https://community.allstarlink.org/t/simulcast-buffer-value-issue/13998/28 "2018-02-22T18:22:46Z")
Seems it works a bit better… I came from Hamvoip back to DIAL.
> **···**
>
> On Feb 22, 2018 11:52, “Joe Moskalski” [kc2irv@gmail.com](mailto:kc2irv@gmail.com) wrote:
>
> > Hamvoip
>
> > * * *
> >
> > App\_rpt-users mailing list
> >
> > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> >
> > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> >
> > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> >
> > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> On Feb 22, 2018 11:48 AM, “Sam Nabkey” [sam.nabkey@gmail.com](mailto:sam.nabkey@gmail.com) wrote:
>
> > DIAL or Hamvoip?
>
> > * * *
> >
> > App\_rpt-users mailing list
> >
> > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> >
> > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> >
> > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> >
> > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> On Feb 22, 2018 10:52, “Joe Moskalski” [kc2irv@gmail.com](mailto:kc2irv@gmail.com) wrote:
>
> > I do not think server horsepower is the issue. I am running three TX/RX simulcast sites off of a Pi3 and when I look at the system resources used it isn’t working very hard.
>
> > * * *
> >
> > App\_rpt-users mailing list
> >
> > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> >
> > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> >
> > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> >
> > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> On Thu, Feb 22, 2018 at 10:47 AM, Jesse Lloyd [ve7lyd@gmail.com](mailto:ve7lyd@gmail.com) wrote:
>
> > I should add to my last post that I use a dual NIC server. One RTCM is connected directly to the server to provide timing only. The other NIC ties to the network with the other RTCM’s that have radios attached.
> >
> > Cheers,
> > Jesse
>
> > On Feb 22, 2018, at 6:43 AM, ARS W5OMR [ars.w5omr@gmail.com](mailto:ars.w5omr@gmail.com) wrote:
>
> > > That’s probably a latency in the audio section of the PC being used.
>
> > > A buddy had the same issues while operating his HF station, remote. After a few minutes, the latency grew and grew… He used WWV (he lives in West Central OK) as a time base…
>
> > >
>
> > > His solution was to get a more “robust” (read: Turtle Beach) sound card. This was in his desktop at the house.
>
> > >
>
> > > It might not be a software problem, as much as a Hardware issue.
>
> > >
>
> > > I don’t remember if you said this was on an RTCM or not but I know one is involved.
>
> > >
>
> > > I believe I would check more on all audio devices involved.
>
> > >
>
> > > * * *
> > >
> > > App\_rpt-users mailing list
> > > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> > > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> > >
> > > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> > > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> > * * *
> >
> > App\_rpt-users mailing list
> >
> > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> >
> > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> >
> > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> >
> > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> On Feb 22, 2018 12:11 AM, “Hayden Honeywood” [haydenph91@gmail.com](mailto:haydenph91@gmail.com) wrote:
>
> > * * *
> >
> > App\_rpt-users mailing list
> >
> > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)
> >
> > [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)
> >
> > To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the “Unsubscribe or edit options button”
> >
> > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> I’ve made a YouTube video with clips from a single conversation I had this morning on the repeater. The audio was recorded on my dashcam.
>
> As can be heard in the video, when I start the conversation, the audio delay is nil, or very little when unkeying. However, by the time I’m finished (I think the conversation lasted about 20 minutes) the audio delay is out to 4 or 5 words!
>
> We were both using the same repeater. We have a repeater linked in from another location. I’ve noticed when talking to someone via that method, the audio delay issue does not build up so quickly.
>
> Hopefully this explains a bit better the issue I’m having.
>
> [https://youtu.be/KG3GgaHVWbI](https://youtu.be/KG3GgaHVWbI)
>
> Regards
>
> Hayden VK7HH
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