[arm-allstar] Duplex setting

[John Simmons]

Steve,

Thanks for your informative reply. I am guilty of leaving out the fact 
that the VHF repeater is a split site.

I spent several hours this afternoon trying different configurations and 
found that if I set rxondelay to 100 on the VHF TX node that the 
ping-pong problem went away. I have the VHF RX node set to duplex=0 but 
the VHF transmit node set to duplex=1 so that I get the hang time and 
telemetry. I guess I learned a lot more from my experiments and doing 
things the hard way.

I come from a background of 27 years working in a commercial two-way 
shop designing and building custom systems, but this Allstar gig is a 
new one on me. I worked a lot with Zetron gear and learned to understand 
their oddball logic including all the config files in the Series 2000.

73,

-de John NI0K

"Steve Agee via ARM-allstar" wrote on 9/18/2019 6:16 PM:
> *Hi John,
>
> The part most folks do not understand is what happens when you do NOT 
> define it in your /etc/asterisk/rpt.conf file. So, when you do NOT 
> define it by adding a line, then it defaults to a value of "duplex=2". 
> This is a full duplex repeater situation. So, for your 1998 node, you 
> must add the line to tell it this is a simplex node. Since it is an RF 
> link to another repeater, you probably want to add "duplex=0" which 
> will force it to a half-duplex mode with no courtesy beeps, hang time, 
> and no cw or voice identifiers .... just like a true simplex 
> conversation would be. For node 50191, you don't need to do anything, 
> unless you want to somehow deviate from the normal full duplex 
> repeater situation. As for node 1999 .... well is this a voting 
> receiver or what? Never has made much sense to me to dedicate a node 
> to RX only or TX only, but there must be something else going on here 
> that you did not disclose earlier, perhaps a split site situation or 
> something similar.
>
> N5ZUA
> *
> On 9/18/2019 2:42 PM, "John Simmons via ARM-allstar" wrote:
>> Help, I'm lost! I know that the 'duplex' setting has been covered 
>> many times but I can't seem to get my system to work.
>>
>> What I have:
>> Node 1998: a UHF simplex transceiver for rf link to another repeater
>> Node 50191: VHF repeater transmitter
>> Node 1999: VHF repeater receiver
>>
>> No matter what permutation of the duplex setting I either get TX-RX 
>> ping-pong or no telemetry or hang time. Obviously I need zero 
>> hangtime on the link radio. I also want to have Allstar and Echolink 
>> on the VHF repeater.
>>
>> I understand duplex=0 provides zero hang time and no telemetry and 
>> that duplex=>0 provides both; however if I set them that way on any 
>> node then I get the ping-pong. Do I need to use rxondelay? If so 
>> where does it go in rpt.conf?
>>
>> -de John NI0K
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