[App_rpt-users] RTCM Mix-station RSSI Indication

Sam Skolfield kj6qfs at gmail.com
Wed Jan 10 23:50:35 EST 2018


Woah, I've been missing out then! My mixminus  rig has never showed
anything other than 0 or 255! Wonder what I'm missing...

On Wed, Jan 10, 2018 at 8:08 PM Tim Sawyer <tisawyer at gmail.com> wrote:

> It's true that RSSI is not relevant to the operation of mix mode. But the
> RSSI reading should work exactly as it does for voted mode. The noise
> squelch circuit is the same in either mode. With a near binary RSSI (as
> Kevin described) I'd be concerned the discriminator audio has a poor noise
> component or that something is wrong with the RTCM.
>
> I run both voted and mix RTCMs on different repeaters and the RSSI behaves
> exactly the same on all.
>
> On Tue, Jan 9, 2018 at 10:52 PM, Chuck Henderson <
> rpt2 at chuck.midlandsnetworking.com> wrote:
>
>> If it is in mix mode rather than voter mode then RSSI has no meaning.  If
>> the signal opens the squelch it will mix in with the best voted node.  It
>> is not intended to listen on the same frequency since it has no GPS timing
>> to align the audio samples with the other nodes.
>>
>> On Tue, Jan 9, 2018 at 7:22 PM, Kevin Babich <kevin.babich at gmail.com>
>> wrote:
>>
>>> Hello,
>>>
>>>
>>>
>>> I have an RTCM operational as a Mix-station in an environment with other
>>> RTCM’s in voting configuration.  The Mix-station RSSI does not appear to
>>> represent the actual signal level as a very binary 0 or 255 value is
>>> displayed, irrespective of signal level.
>>>
>>>
>>>
>>> I understand a fix for this has been made.  As such, can someone please
>>> direct me to the location which I might locate it?
>>>
>>>
>>>
>>> Best,
>>>
>>>
>>>
>>> KJB
>>>
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>>
>>
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>
>
>
> --
> Tim WD6AWP
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-- 
KJ6QFS
Sam Skolfield
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