| |
ZL1ANM > TECH 20.12.05 00:52l 37 Lines 1341 Bytes #999 (0) @ WW
BID : ZL1ANM122
Read: DL1LCA GUEST OE7FMI
Subj: re: A puzzling fault
Path: DB0FHN<DB0FOR<DB0SIF<DB0EA<DB0RES<DK0WUE<7M3TJZ<ZL2BAU<ZL1AB
Sent: 051219/2252Z @:ZL1AB.#11.NZL.OC #:32821 [AUCKLAND] FBB7.00i $:ZL1ANM122
From: ZL1ANM@ZL1AB.#11.NZL.OC
To : TECH@WW
>From: K0CQ@W0AK.#CIA.IA.USA.NA
>To : TECH@WW
>
>I have found through long experiments that unless a frequency is
>totally private with only two users that I get more throughput
>(as does bbs forwarding) if maxframe is set to 1 than when set to
>7. That's because when there are collisions they almost always
>are in the first frame and the protocol has no way of accepting
>the other 6 good frames and asking for the first only to be sent.
>The protocol can only reject that damaged frame and so all 7 get
>sent again.
Absolutely correct! With medium to heavy channel usage, uploading
to the BBS will probably be most efficient with Maxframe set to 1.
Unfortunately, many users including myself are using AGWPE in auto
mode, which starts at Max=7 and adjusts itself downwards to not
less than 3 according to channel congestion.
AGWPE revises the setting every 2 minutes, so if you start up AGWPE
and immediately try to upload a message, you can cause all kinds of
havoc on the channel for the first two minutes. The same applies if
you are in the habit (as I am) of turning down the receiver's audio
while typing a message, and then try to upload.
I guess I should experiment with non-auto mode and Max=1.
73 de Neil ZL1ANM
NBF 2.08
Read previous mail | Read next mail
| |
