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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=k8rra@ameritech.net href="mailto:k8rra@ameritech.net">George (Skip)
VerDuin</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=nos-bbs@lists.tapr.org
href="mailto:nos-bbs@lists.tapr.org">TAPR xNOS Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, August 11, 2006 10:40
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [nos-bbs] Collision
avoidance</DIV>
<DIV><BR></DIV>
<BLOCKQUOTE TYPE="CITE"><PRE> </PRE></BLOCKQUOTE>
<DIV>Actually - I don't mind the wait to get a 1/2 second opening to jump
into.<BR>My trouble is not waiting...<BR><BR>This is a side-light
information...<BR>I found some distressing frames I don't know how to produce
even if I tried.<BR>MAXFRAME allows packing multiple packets into a frame /
however / I see multiple repeats of the SAME packet in a frame.<BR>This smells
BAD to me. </DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> SKIP:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> 1/2 second is too short, that is shorter
than most SLOT times and TXD will allow,</FONT></DIV>
<DIV><FONT face=Arial size=2>as a matter of fact a lot of people use an actual
TXD greater than 1/2 second.</FONT></DIV>
<DIV><FONT face=Arial size=2>1/2 second between transmissions is way too
short, IN short, they</FONT></DIV>
<DIV><FONT face=Arial size=2>are "Hogging" the frequency using aggressive
timings. In other</FONT></DIV>
<DIV><FONT face=Arial size=2>words YOU have seen the light of day and are
going to use persist and slots.</FONT></DIV>
<DIV><FONT face=Arial size=2> If the time between thier tx is really that
short, they are using neither.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The repeat Packets. I have been complaining about
this for years with KISS. The</FONT></DIV>
<DIV><FONT face=Arial size=2>fault is not JNos or your Tnc, it is the fact
that the ax.25 protocol is seperated</FONT></DIV>
<DIV><FONT face=Arial size=2>from the tnc and resides in your computer. the
computer does not know that your</FONT></DIV>
<DIV><FONT face=Arial size=2>tnc has been waiting 5 seconds to transmit frame
number one, so IN</FONT></DIV>
<DIV><FONT face=Arial size=2>the computer the frack timer expires, and the
computer sends it again. your only solution</FONT></DIV>
<DIV><FONT face=Arial size=2>is to set a really high frack timer. this will
slow things down, but will stop</FONT></DIV>
<DIV><FONT face=Arial size=2>the DUP frames. I use KISS mainly on H.F. and the
wait times, at 300 baud,</FONT></DIV>
<DIV><FONT face=Arial size=2>between frames can be great, and we run into this
problem a lot. This problem</FONT></DIV>
<DIV><FONT face=Arial size=2>would also be solved if the TX'ing stations would
reduce maxframe and paclen.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>the problems you are running into with slots,
persist, and frack>kiss expiry are</FONT></DIV>
<DIV><FONT face=Arial size=2>all symptoms of an EXTREMELY busy frequency, or
if only a couple stations</FONT></DIV>
<DIV><FONT face=Arial size=2>are present, some rather rude Parms are in
place.</FONT></DIV>
<BLOCKQUOTE TYPE="CITE"><PRE>
</PRE></BLOCKQUOTE>
<DIV>I see no evidence of duplication thus FRACK may be OK... </DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Look up ^^^^^ you said you are seeing multiple
dupes in the same</FONT></DIV>
<DIV><FONT face=Arial size=2>"Frame". A frame and a "Packet" are the
same thing. the multiple</FONT></DIV>
<DIV><FONT face=Arial size=2>packets you are seeing sent to the tnc is a
matter of</FONT></DIV>
<DIV><FONT face=Arial size=2>the kiss protocol. if you have maxF set greater
to one,</FONT></DIV>
<DIV><FONT face=Arial size=2>say, rudely, to four, then your jnos, in KISS<
will send four</FONT></DIV>
<DIV><FONT face=Arial size=2>Frames in one Burst to the tnc. If you are seeing
more than one</FONT></DIV>
<DIV><FONT face=Arial size=2>of the same "frame" </FONT><FONT face=Arial
size=2>or "Packet" in the same burst then the frack timer is</FONT></DIV>
<DIV><FONT face=Arial size=2>indeed too short for the channel </FONT><FONT
face=Arial size=2>conditions. Channel conditions depending</FONT></DIV>
<DIV><FONT face=Arial size=2>on how many folks or how polite </FONT><FONT
face=Arial size=2>the channel users are being.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> Only trying to help so please don't tell me
to "remove the bananna" this time :-) :-)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Steven N1OHX</FONT></DIV>
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