I posted the note below on the 3830 list in my report on results CQWW160.
Today I investigated the problem and discovered the problem existed on 80&40M
as well
where I use an OCF Dipole with a 4:1 balun and separate home brew toroid
choke. On
160 I Use a backyard Inv L with 30 radials of Random lengths and a ferrite bead
choke.
The Gateway Router is installed in the wiring closet near the shack where the
AC
entrance and breaker panel is located. All the CAT5 wiring for the house also
terminates in this
Central point for connection to the router. I used the SPEEDTEST.NET site to
monitor the
High speed line as I adjusted the power in these antennas. On all three of
these bands the line would
Crash at 100 w output. The crash on 80&40 was dramatic whereas on 160 the line
( router) would stop
And then try to recover indicating that the impact of the RF was greater on
80&40.
Upon investigation I found that the output power cord to the router had been
wedged in behind some AC
Power 12/2 wires coming out of the panel. Just on spec I rerouted the cable
away from the panel
And the AC wires. To my great surprise upon testing with rig at 100w I
discovered that on 160 m
The line crash had stopped! With the amp on, the line would crash at about
300w. So on 160m some kind of
common mode currents we're induced into the router power cable just by its
proximity to the
Household C wires! By the way on 80&40 the dramatic line crashes did not stop
by the
Change in location of the power cable. (OCF dipole used on these bands)
To cut to the conclusion I proceeded to use all the 2" toroids (#31 material) I
had on hand plus some
#43 snap on beads to isolate as many AC power cords as possible in the
shack....in particular
The AC lInes to the rig and amp and the router power block. Guess I should
have done this
previously. The greatest impact was realized I when I used three toroids in a
stack and would the
CAT5 cable from the high speed line modular jack to the router with a many
turns as possible.
The line does not crash now at power levels of 500-600w on the three low bands.
Common mode
Currents were entering the router over its power cable an also the high speed
line CAT5 cable.
I need to place toroids on the drops feeding the TV's and the shack PC as well.
I pass it this experience on in the event that it might help others
encountering similar issues.
I have read K9YC's excellent paper several times and have it to be a very
valuable and practical
Guide.
73 Frank
VO1HP
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Limited optg time - self-imposed for domestic bliss! It seems my new
IPTV wireless router (Brand: 2Wire, Inc. 3800HGV-B Gateway)
does not like the ACOM 1010 running at full power. It would crash during
every exchange causing loss of TV and internet access. Sometimes it might
recover between Q's depending. Only after my XYL had retired for the evening
on Sat could I really get into the contest. Further investigation needed to see
if I
can mitigate the problem.
Sent from an iPad2
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UR RST IS ... ... ..9 QSB QSB - hw? BK
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