[ct-user] Problems using CT with Network Cards: Messages missed

[J. Pablo Garcia]

During last WW SSB Contest we have used for first time at EA4ML (Multi
Station) the CT version 9.26 networking with LAN Networks (using the UTP
interface and a 8 ports HUB)

Before the contests it seemed it worked fine; we made several Contest
simulations and it was OK.
However when the Contest began, without changing any thing at software
parameters or any hardware, we noticed that around 30% of the contacts on
the 40 mtrs band, were not passing to the other 5 computers. In adition,
some QSO's (most times was ok) that was mofified at any computer, were not
updating to the others. or some computers was updated but others not. Some
Cluster Spots were not passing to some computers (aleatory), and some
Network messages (Alt-G) were also missed.


Previous the contest the 6 Networks cards were checked with Windows 95 and
the Microsoft Network was running without any problem or delay. Also the
"TCP/IP Ping utility" was running fine, always the replay was received at <
1 ms.

Does anyone detect a similar problem running the CT with Network Cards?
Can  it be because the RFI?
Any experience like this?



CONFIGURATION USED
***************************************

Networks cards NE2000 compatible using RJ45 connector (UTP)
Last version used of the NETTSR Driver (K1TTT) (Beta 0.4???)

The configuration used was:

- CT version 9.26 at all computers

- Station for 20mtrs:
PC 386 + 4Mb RAM
COMTSR2 for support the Cluster Connexion
NE2000 Compatible Network card (Using the RJ45 connector)

- Station for 160mtrs:
PC 386 + 4Mb RAM
NE2000 Compatible Network card (Using the RJ45 connector)

- Station for 15mtrs:
PC 386 + 4Mb RAM
NE2000 Compatible Network card (Using the RJ45 connector)

- Station for 40mtrs:
PC 386 + 8Mb RAM
3COM ElnkII Network card (Using the BNC connector)

- Station for 10mtrs:
PC 386 + 4Mb RAM
NE2000 Compatible Network card (Using the RJ45 connector)

- Station for 80mtrs:
PC 386 + 4Mb RAM
NE2000 Compatible Network card (Using the RJ45 connector)

A Hub (D-Link: 8 TP's connectors + 1 BNC) was used for connect most the
Computers with the RJ-45, however the Station for 40 mtrs was using the
BNC - RG58 connector.


Thanks in advance

Pablo - EA4TX

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J. Pablo Garcia
EA4TX
C/ Fresno 67
28529 Rivas-vaciamadrid
MADRID - ESPAŅA (SPAIN)

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EA4ML Multi/Multi Contest Group Member

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e-mail: ea4tx@arrakis.es
Web: http://www.arrakis.es/~ea4tx

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