Dick,
You did not indicate if the feedback is in the internal K3 speaker or
an external speaker. I have no problem with my K3 using an ext. spkr
(but that is because it is unamplified 1950's era National 8-inch speaker).
I do get audio feedback with my KX3 because I am using cheap computer
speakers that are prone to RF rectification in the amplifier. I have
to run the speaker volume down if I operate 300w on HF or 6m. That
requires running the KX3 volume too high for my tastes (tends to
become distorted at the high end). I like running a combination
volume settings where the volume in the KX3 is set about 8-12.
So back to my point that cheap amplified speakers can be subject to
stray RF in the shack. My 300w amp is still open-air and not
enclosed in a cabinet (which would also help reduce feedback in my
wife's FM radio in her hobby room next to the shack). I bought her
the West Mountain speaker for her computer and it is totally free of
RF pickup; I'll be getting a pair for my KX3 sometime this
winter. Also buying an enclosure for the 300w amp including
bypassing of the dc and control lines.
But first checking monitor setting is a good idea. I've had that
happen a time or two going between CW and SSB.
73, Ed - KL7UW
----------------------------
From: Dick Brown <[email protected]>
To: "[email protected]" <[email protected]>
Subject: [Elecraft] Audio feedback
Message-ID: <[email protected]>
Content-Type: text/plain; charset=us-ascii
I am getting audio feedback via the speaker when I transmit on
K3. What's a way to solve this.
KT6X
73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
[email protected]
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