In article ,
Robert Kubichek wrote:

No, a 604 is a wired router, I would suspect it is a poorly wired or bad cable
that is a multiple wavelength of that particular frequency... I use the 604
( non print server ) and 614 ( print server ) routers with no problems at all.

There may be multiple revisions of the 604, with significantly
different internals. I've had similar RFI problems with some routers
and WAPs, and have concluded that some of them use buck-mode voltage
regulators (DC-to-DC converters) which put out strong harmonics of
their switching frequencies. Similar devices from the same
manufacturer, a year or two newer or older, don't have these emission
problems... I believe that the voltage converters in the trouble-free
units probably incorporate a "spread spectrum" modulator on their
switching oscillator, and thus emit a broad-but-low level of RF hash
rather than discrete birdies.

--
Dave Platt AE6EO
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