Re: ax25 pakcet problem: any ideas?

From: Tomi Manninen (uxv@roskapostia.tunk.net)
Date: Fri Dec 27 2002 - 22:14:33 EET

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    On Fri, 27 Dec 2002 cqwyq.mratoc@harrow.ac.uk wrote:

    > OK, I shoudl check this. Worth nothing that other transmissions (ax25) do
    > work, and also, va3am was able to connect fine. So perhaps the problem is
    > more likely to be on the va3mvw side. Not sure what to look for but
    > that's where my efforts will now concentrate.

    Ok,

    That would seem like the txdelay at VA3OAK is enough for it's TX chain but
    unfortunately on a shared channel you will have to go by the weakest link.
    It might be that the TX-to-RX switching delay of the TRX or the synch
    delay of the TNC at VA3MVW might be too long.

    Then agin, the problem might be something else just as well...

    /Tomi

    > On Fri, 27 Dec
    > 2002, Tomi Manninen wrote:
    >
    > > On Fri, 27 Dec 2002 terhi.victor@logonet.com wrote:
    > >
    > > > But when I open by bbs, the first
    > > > packet is 255 characters long, and is never heard, The next packets are
    > > > shorter and are always heard.
    > >
    > > This is just a guess, but the lenght of the packet might not be the issue.
    > > It could be that the txdelay at VA3OAK is too short, thereby distroying
    > > the start of the packet. That would cause behaviour like this. (I'm
    > > assuming both packets are sent in one go.)
    > >
    > >
    >
    >

    -- 
    Tomi Manninen           Internet:  hke@jyu.fi
    OH2BNS                  AX.25:     terhi.victor@logonet.com
    KP20ME04                Amprnet:   kmeyaqa.fmlghivrb@charter.com
    

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