Richard,
The problem could still be in the power cord or wall cube. You might try
to determine what voltage(s) is/are supplied by the wall cube to the modem.
I would then rig a battery pack and connect it to the modem with absolutely
the shortest cable that you can. Use beads on the cable if possible. If it
works, then you know the cube is being hammered and will require filtering,
probably on its AC line input side. If this still doesn't do it, then I
would suggest that it is time to call the manufacturer. Remember, sadly,
that equipment made to FCC specs has to pass no RF immunity requirement.
You don't mention your RF power level or proximity of antennas to the
shack. Those could be factors to consider, especially if isolating the
modem power does not fix the problem.
Good luck.
"Richard Zalewski" <w7zr@citlink.net>@contesting.com on 09/07/2002 12:32:10
PM
Sent by: rfi-admin@contesting.com
To: "RFI" <rfi@contesting.com>
cc:
Subject: [RFI] RFI and Speed Stream 5667 DSL Modem
Any one out there using a Speed Stream 5667 DSL Modem or similar external
modem by Efficient Networks? Having a bear of a time keeping RF that
unsyncs the modem
out even at low power.
I never had the problem with an internal DSL modem. So I do not think it
is
a problem with the telco line.
Here is what I have done so far:
1. Ferrite beads on all leads to modem. (The correct kind and lots of
turns)
2. Physically moved the modem around
3. Covered the modem in aluminum foil
4. Removed the Ethernet cable from the modem so it is only the power cube
and the telco DSL line
5. Substituted power cubes
6. Inverted the power cube in the AC mains outlet
Any one with more ideas? (Other than junking the modem)
Dick W7ZR
Price Reduced!!
Beach Vacation or Retirement Home
Visit www.w7zr.com for details
_______________________________________________
RFI mailing list
RFI@contesting.com
http://lists.contesting.com/mailman/listinfo/rfi
|