On 12/16/2019 10:41 AM, email@example.com wrote:
I have an issue with my HF radio in my 2019 5th wheel camp trailer. I
have a 100 watt HF radio which I have turned it down to 90 watts out.
Every time I key up
In the ham world, "key down" means you're transmitting a CW carrier.
"Key up" means you're receiving.
and transmit I hear noise coming from the
What is the full name/description of the thing you are calling a
"converter?" Is it a 12VDC to 120VAC INVERTER? Such a device is
I have flipped all the 110volt ac breakers off and pulled
all the 12 volt dc fuses out. I still hear the noise.
Yep, as long as it's running, it will put noise on any wires connected
to it, like the 12V bus.
I have put 2 mix
31 snap-on beads on the 12 volt dc lines (2 on both) coming from the
battery to the converter. I put them at the converter. I still hear
Not surprising -- just snapping them on won't do anything at all except
a bit on 2M. To be effective on HF, multiple turns must be wound through
the #31 core. Study http://k9yc.com/KillingReceiveNoise.pdf and
I am using a screwdriver antenna.
Any ideas what I need to do to make the converter stop making noise
when I transmit? The noise sounds like relays clicking.
Since we don't know what the "converter" is, it's hard to say. :) Where
do you hear the noise -- is it coming through a speaker or headphones,
or some audible noise from inside the "converter?"
73, Jim K9YC
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