[Packet] Packet on 40/80 ?

[Richard Harrison]

More than 10 years ago ran a series of test on 40/80 packet that clearly
showed that 150 baud provided better throughput on HF than 300 baud.  It
does appear that the whole HF packet phase has now for the most part faded
out of fashion.   Enter Q15X25 -- had 2-3 contacts on 15 meters but nothing
since then.  Has there been any interest on this list in Q15X25?

Regards,

de Rich/N2JR

----- Original Message ----- 
From: "Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>
To: <packet@mailman.qth.net>
Sent: Sunday, September 07, 2003 10:32 AM
Subject: Re: [Packet] Packet on 40/80 ?


> HF packet has NEVER been great. The data speed (300 baud) is faster than
> the path stability and bits get massacred by varying paths. You always
> need to set retries to the maximum the TNC will do, the factory default
> of 4 is way too few. You need to set maxframe at 1 and keep packlen
> short (maybe 40 for HF) and you have a better chance.
>
> Pactor has always worked far better and always will. It was invented
> after experience with 300 baud packet proved so rotten. Pactor II does
> even better.
>
> 73, Jerry, K0CQ
> -- 
> Entire content copyright Dr. Gerald N. Johnson, electrical engineer.
> Reproduction by permission only.
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