[OZAPRS] UI-View, Tiny2 TNC and collisions!

[Ray Wells]

Michael Carey wrote:

>Ray Wells wrote:
>  
>
>>Michael Carey wrote:
>>
>>  
>>    
>>
>>>Hi Everybody,
>>>I run UI-View at home as an I-Gate (VK5ZEA) for the Port Lincoln/Lower 
>>>Eyre Peninsula area.
>>>The TNC is a Paccomm Tiny2 and the radio is a Tait T2000 series. I'm 
>>>using KISS mode, and I've also tried operating it with the AGW Packet 
>>>Engine as well.
>>>I've recently noticed (might have been doing it all along, I'm not
sure) 
>>>that this station will happily transmit over other stations without 
>>>hesitation. Even on an open squelch, which causes the DCD LED to 
>>>illuminate, command UI-View to transmit a beacon and the Tiny2 will 
>>>dutifully key up the radio and transmit. Of course, this is not very 
>>>nice and I would like to prevent it.
>>>What could be done about this, where is the carrier detect control done

>>>with a KISS TNC situation? Is this an issue with the TNC, with UI-View,

>>>KISS? I made sure that the two Eyre Peninsula digi's have hardware 
>>>carrier detect lines connected to stop them from stomping on other 
>>>stations. I would like the regions I-Gate to observe the same courtesy!
:-)
>>>Any ideas?
>>>Michael.
>>>VK5ZEA
>>>
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>>>Ozaprs at aprs.net.au
>>>http://aprs.net.au/mailman/listinfo/ozaprs
>>>
>>> 
>>>
>>>    
>>>      
>>>
>>Hi Michael,
>>
>>My experience is that the KISS implementation in the standard TAPR EPROM

>>is terrible, with the symptoms you describe being just one of a number 
>>of timing problems.
>>
>>The KISS only EPROM from TAPR doesn't suffer these problems, in my 
>>experience. I have four TNC's here running KISS only EPROMs.
>>
>>Ray vk2tv
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>>Ozaprs at aprs.net.au
>>http://aprs.net.au/mailman/listinfo/ozaprs
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>>  
>>    
>>
>Thanks for the head up Ray. I have a EPROM out of a Paccomm EWM, an 
>"industrial" version of the Tiny2. This had a cut back AX25 firmware 
>with no messaging and other frills. I put this in the Tiny2 and now 
>there is no issue. Looks like the KISS implementation in the original 
>firmware was a little flakey.
>I also re-programmed the radio to prevent transmit over a signal, double 
>measures!
>Regards,
>Michael.
>VK5ZEA
>
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>  
>
Hi Michael,

I'm not the only person to identify the problem with the standard EPROM.

I have the KISS only image if you need it.

Cheers .. Ray vk2tv
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