[aprssig] Persist and Slottime for Digi?
Henk de Groot
henk.de.groot at hetnet.nl
Sat Apr 2 12:56:30 CST 2005
Greg Noneman schreef:
> You didn't mention what type of TNC you were using. For TNC2 units
> (including UIDIGI firmware), if PPERSIST is ON, than PERSIST should be
> set to 255 and SLOTTIME should be set to 0. DWAIT should also be set to
> 0. For KPC 3 units, the same applies, but the more relevant parameter
> is UIDWAIT, which must be set to OFF. A UIDWAIT setting of OFF disables
> and any delays (DWAIT, SLOTTIME) for packets covered by the UIDIGI,
> UIFLOOD or UITRACE.
PERSIST/Slottime setting also applies to KISS (there are KISS frames for
Setting on linux depends on the kind of hardware, for kiss for example you
have "kissparms", for BayCom/BayPac "sethdlc", for YAM modem "yamcfg" etc.
For users of DIGI_NED under DOS, the settings are in AX25_MAC.INI but I
changed the default settings as I deliver them in the package to 255/0 a
few releases ago.
I think with AGWPE there is a problem, I don't think you can influence the
channel access parameters since AGWPE manages them. This is from memory, I
may be wrong.
Beware when using a Kenwood TNC (maybe also Alico?). When using
PPERSIST=ON or KISS then beware that PERSIST=255 completely shuts down
transmission, instead PERSIST should be set to 0 (Kenwood/Tasco
implemented it the wrong way arround). When you use DIGI_NED with TNC type
THD7 then AX25_MAC makes the correction for you so you can still set 255
in the ax25_mac.ini file.
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