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

[Michael Carey]

Ray Wells wrote:
> 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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>>>>
>>>>
>>>>    
>>>>      
>>>>
>>>>         
>>> 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
>>> _______________________________________________
>>> Ozaprs mailing list
>>> Ozaprs at aprs.net.au
>>> http://aprs.net.au/mailman/listinfo/ozaprs
>>>
>>>  
>>>    
>>>
>>>       
>> 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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>
>   
If you could send me an KISS only EPROM image file, that would be great. 
I also tried MFJ 1720b firmware and it also works quite OK.
Michael.
VK5ZEA
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