[OZAPRS] Higher beacon rate HF versus VHF?

David and Justine Olsen davejust at bigpond.net.au
Tue Mar 31 08:41:53 EST 2009


Andrew,

Good point, I was of course referring to 40m, when I was suggesting  
higher rates and fewer copies. I understand it would be difficult to  
have a "standard" that varies for bands, just suggesting that I am  
not sure you would get a lot of objections if your home station or  
igate beaconed more often than recommended.

David



On 31 Mar 2009, at 07:26, vk5ex.andrew at gmail wrote:

>
> Hi all,
>
>
> Re Davids comment below.
>
>> You sure? They can transmit all they like. Given the poor Rx  
>> success rate, they aren't going to cause a whole lot of problems  
>> if they  aren't heard by anyone.
>
> Id just like to clarify that we have a truley excellent access rate  
> on 30m nowadays. Looking at past logs for various Northern Flinders  
> trips and Innaminka trips Ive done over the past couple of years I  
> can say that posit to HF gate success rate would be very very close  
> to 100 percent. In fact just looking at one of my last track logs  
> on aprs.fi for a Flinders trip we did last month, the tracking was  
> excedingly good with only a couple of missed posits. I was running  
> a 5 minute beacon rate at about 20 watts on that trip. Probably a  
> bit quick for general use on 30m, but it gives a good indication of  
> how reliable 30m HF aprs is nowadays.
> So perhaps when we refer to poor RX success rates we need to  
> clarify that a bit more as to what bands we're talking about etc. !!
>
> Regards .. Andrew .. VK5EX
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