On 6/5/2016 5:03 AM, Joel Black wrote:
I’m pretty sure I can bond the KX3, PX3, and MFJ-4125 but I don’t
have a *clue* how to bond the iMac. It’s a late 2012 27” iMac. It’s
an all-in-one with *no* external screws. It’s the model with the
“pregnant” bulge in the back. However, if it means I have
Get a big clamp-on ferrite and wrap the power cord through it as many times as
will fit. Do that as close as you can to the back of the iMac. The iMac has a
three-conductor power cord, so try and get all of the power cords for your
equipment to a single power strip. This is a start at bonding t
much noise comes from and iMac from the USB cables, beads will greatly
reduce the noise... Fred
On 6/5/16 9:35 AM, John wrote:
> Can’t do that - with the iMac the power supply is built in…it’s an
> all-in-one.
>
>
>
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> On 5 Jun 2016, at 2:42 PM, Buck via Elecraft wrote:
>
> Here is the author
Can’t do that - with the iMac the power supply is built in…it’s an all-in-one.
On 5 Jun 2016, at 2:42 PM, Buck via Elecraft wrote:
Here is the authority on the issue. http://audiosystemsgroup.com/RFI-Ham.pdf
Have you put ferrite on the cables from the iMac and the switching power supply?
Y
Joel,
Good progress.
Yes, the roofing filter is not usable with the 8kHz shift engaged. This
is not a firmware problem, it is a hardware problem. Think of it this
way - the "IF" for the KX3 is at baseband (audio frequency range), and
that is where the roofing filter works - in other words, i
Here is the authority on the issue. http://audiosystemsgroup.com/RFI-Ham.pdf
Have you put ferrite on the cables from the iMac and the switching power
supply?
You've used "star" grounding around the KX3. Try bonding everything to
everything - you want to provide a low-impedance parallel path
I figured out most of my problems with all the spikes on the PX3 - the
switching P/S in my iMac. To a lesser extent, I can hear the MFJ-4125 switching
P/S I use to power the KX3 and PX3. I cannot remember if I tried looking at the
spectrum using the Astron RS-35 as a power source and plugging in
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