Steve,
All older and some newer ones Logitech device's use 27mhz RF.I have the
same problem
with my microsoft wireless mouse on 10m.Placed the receiver somewhere else
did some
help but not when running the linear on 10m.
The newer wireless devices are starting to use 2.4Ghz band.
marc on4ma
----- Original Message -----
From: "Steve" <steveac@charter.net>
To: <cq-contest@contesting.com>
Sent: Sunday, January 29, 2006 10:49 PM
Subject: [CQ-Contest] Cordless keyboard / mouse
> I have a Logitech Cordless Freedom Navigator keyboard and mouse. I have
> tried several times over the past few years to use these devices on the
> PC at my radio desk. But they do not like it when I operate with high
> power on 160 or 10 meter CW. Operation on other bands doesn't seem to
> bother them.
>
> The mouse and keyboard are normally good for at least a few feet between
> them and the Logitech receiver. But when I operate on 160 or 10 meter CW
> I have to keep the keyboard and mouse within a couple of inches of the
> Logitech receiver, otherwise they won't work until the transmitter stops
> transmitting, at which point they are back to business as usual. This
> constraint prods me back to wired keyboard and mouse. After a while I
> tire of the cords and go back and try the cordless devices again, with
> the same results.
>
> Perhaps part of my problem lies in the use of open wire transmission
> line. The open wire terminates at my tuners within 4 or 5 feet of where
> the keyboard/mouse are located on my operating desk . . . a source of RF
> that might be of greater level than if I were using coax?
>
> Anyone know of cordless keyboards and mice that aren't susceptible to
> being desensitized by nearby strong RF fields? (I'm assuming
> desensitization is what's going on . . . educate me if there's a better
> description.)
>
> Thanks.
>
> Steve K8JQ
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