[App_rpt-users] Simulcast buffer value issue

Joe Moskalski kc2irv at gmail.com
Thu Feb 22 15:52:12 UTC 2018


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 at 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 at 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.
>
>
> On Feb 22, 2018 12:11 AM, "Hayden Honeywood" <haydenph91 at gmail.com> wrote:
>
>> 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
>>
>> Regards
>> Hayden VK7HH
>>
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