[OZAPRS] Re: 40m Traffic & TX DELAY

[Ray Wells]

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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