[OZAPRS] Re: 40m Traffic & TX DELAY

[Ray Wells]

David,

I just looked at my configs and I have a value of 40mS on HF and 20mS on 
VHF. I can't recall how I arrived at those figures but they may have 
been recommendations (starting points?) from an old document from the 
father of KISS, Phil Karn, about the time the Ark was being built :-)

Given that you are not having any obvious problems with a value of 0, 
maybe a low, belts & braces values of say 10 or 20 might be appropriate.

Ray vk2tv

David and Justine Olsen wrote:
> MixW has a Tx tail setting, currently 0
>
> Do you have any recommendations for my soundcard setup with respect to 
> TxTail.
>
> David
>
> On 5 Apr 2009, at 06:01, Ray Wells wrote:
>
>> In my early days of running HF for the BBS I experienced some 
>> variable results that I attributed to TXD being marginal. Setting TXD 
>> to 450mS ironed out that problem and it remains the value I use with 
>> The Kenwood TS430, a Tracker Lynx and a couple of Codans.
>>
>> There is another setting which, although largely deprecated, can 
>> prove useful on HF, and that's TXTAIL, the purpose of which is to 
>> hold the TX up to ensure the data has cleared the radio. It's like 
>> TXD in reverse.
>>
>> It's certainly still available as an option with KISS TNC's in Linux 
>> kernel ax25, and my Baycom USCC> 4, four port internal card has it as 
>> well.
>>
>> Ray vk2tv
>>
>> Tony Hunt wrote:
>>> David. I dont know what others are running but I run 480mS .. I 
>>> messed about
>>> with TXDelay on 30m a while back with Tiny Trackers and found that 
>>> figures
>>> closer to 500mS seemed more reliable. I remember some earlier TNC2 
>>> firmware
>>> for VHF that came out with default Txdelays of 300mS . Surely its 
>>> going to
>>> be higher as a rule on HF !!
>>>
>>> I wonder what everyone is running as a rule?
>>>
>>> Of course it all depends on different radios your running etc etc.. 
>>> It also
>>> depends on different receivers that others are running and software and
>>> squelches etc. Those latter things are all out of your control..
>>>
>>> I picked some frames up from you on 40m early this morning around 
>>> the grey
>>> line at 0413 local. The same with ZL4TZE-4 at the same time. So Ive 
>>> got 8
>>> stations on the heard list so far.
>>>
>>> Tony Hunt  VK5AH
>>>
>>> ----- Original Message -----
>>>> Date: Sat, 4 Apr 2009 14:14:08 +1000
>>>> From: David and Justine Olsen <davejust at bigpond.net.au>
>>>> Subject: Re: [OZAPRS] 40m Traffic & TX DELAY
>>>> To: Australian APRS Users <ozaprs at aprs.net.au>
>>>> Message-ID: <5DF92CC8-3A97-461B-97F8-2B9C3E37F8F3 at bigpond.net.au>
>>>> Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed
>>>>
>>>> I have a very short packet, but my Tx delay is 300mS
>>>>
>>>>
>>>> David
>>>>
>>>
>>>
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>>>
>>
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