5                            9600 BAUD PARAMETERS
                             ~~~~~~~~~~~~~~~~~~~~
   As you'd expect, the parameters we all know and love at 1200 baud don't 
work very well at 9600 baud.  These are what we've found work well at 9600.

5.1        AX.25 PARAMETERS

TXDelay         between 8 and 15 - set for best throughput
RESPtime        100 mS seems to have better results than 0
FRack           8 seconds on a busy channel; but never less than 5 seconds
PERSIST         128/users; if it's a pretty clean channel, 64 is nice; if   
                it's busy, guesstimate the average number of users and      
                divide 128 by this number, i.e. 4 users = 128/4 = 32
SLOTTIME        20
MAXFrame        If the channel is great, 7; average, 3; rough, 1
RETry           15
CHeck           300 seconds

5.2        TCP/IP PARAMETERS
           ~~~~~~~~~~~~~~~~~
   My 9600 baud interface is called "96"; here are params from my files.

par 96 1 8
par 96 2 64
par 96 3 20
par 96 4 2
ax25 maxframe 3
ax25 paclen 256
ax25 pthresh 64
ax25 retry 15
ax25 t1 8000
ax25 t2 1000
ax25 t3 300000
ax25 t4 900000
mode 96 datagram
ax25 persist 96 256 5 128 15 60

   Some of these parameters are specific to pe1chl NET, so don't get an 
ulcer if your version barfs on them.


6          HELP

   If you have a radio you'd like to use for 9600 baud, but don't know
where to find the "magic points", send me 2 copies of the schematics - one
for me, and one for you (block diagrams are nice but not absolutely
required), and a stamped, addressed return mailer.  I'll get out my red
"test grading" marker and mark the points where you'll find raw RXA and
TXA.

   Some of these mods are tested, and some aren't, but should work fine.  
These are non-destructive (yup - you can still use it for whatever it was
used for before), and are generally a simple matter of tacking 2 caps to
easily accessible spots on the PCB, adding the 2 resistors, attaching 2
pieces of mini shielded cable, and bringing the 2 connections out.

 Yours,
  _ _ _             __
 ' ) ) )   /       /  )        _/_
  / / / o /_  _   /    . . __  /  o _
 / ' (_<_/ <_(/_ (__/ (_/_/ (_<__<_/_)_
 
 Packet: WD6EHR@n6yn.#soca.ca.usa    WD6EHR@WD6EHR.ampr.org [44.16.0.21]
 Internet: WD6EHR.ampr.org!WD6EHR@puffin.UUCP      Compu$erve 73240,3523
 WD6EHR-3 netrom switch   WD6EHR-6 conference bridge  WD6EHR-8 mbox/info
 145.36- 1200/9600 baud duplex repeater <----> 439.025 - both @9600 baud
 7921 Wilkinson Avenue; North Hollywood CA USA 91605-2210 (818) 765-2857