FWIW: I see that regularly, in short bursts. Midday, just watching 80
while otherwise occupied, those multiple very narrow carriers come up
for anywhere from a few seconds to a minute or two, and then disappear.
Oddly, but thankfully, I'm not plagued with SMPS type noise ... well,
except when
Jim,
Nice reference!
kurtt WB9FMC
On 4/5/24 16:11, Jim Brown wrote:
On 4/5/2024 12:59 PM, Robert Strickland via Elecraft wrote:
The screen shot of the noise is posted on QRZ.com. This link will get
you there.
https://forums.qrz.com/index.php?threads/noise-reduction-resources.908913/
Robert,
Hum... About every 3 kc... Do they drift? I'd say that the
"pull-the-plug" method of troubleshooting might yield interesting
results. Maybe a washing machine or dryer or some other appliance. At
least, that'd be my uneducated guess! Hope you find it!
kurtt WB9FMC
On 4/5/24 1
On 4/5/2024 12:59 PM, Robert Strickland via Elecraft wrote:
The screen shot of the noise is posted on QRZ.com. This link will get
you there.
https://forums.qrz.com/index.php?threads/noise-reduction-resources.908913/
The thin vertical lines look like they're coming from some piece of
electron
The screen shot of the noise is posted on QRZ.com. This link will get
you there.
https://forums.qrz.com/index.php?threads/noise-reduction-resources.908913/
On 4/2/2024 20:36, Robert Strickland via Elecraft wrote:
Thanks to those answering my request for noise reduction
sources/sites. Several p
Elecraft's own list is for support of ALL their products. Some guys
wanted a list dedicated to the K3, so started their own. That's the
groups.io list. There's another groups.io list dedicated to the K4.
Elecraft is NOT doing censorship, it's simply a text only list, because
they started it 2
Jim...
How am I to understand the inclusion [screen shot] in the message from
Jim W7RY on 4/3/24 concerning a micro controller in the K2? His message
involves groups.io which may explain the difference. I still don't
understand the relationship between the groups.io list and the Elecraft
list
Robert,
May I suggest QRZ.com, where they /do/ allow images... {'-)
k WB9FMC
On 4/2/24 15:36, Robert Strickland via Elecraft wrote:
Thanks to those answering my request for noise reduction
sources/sites. Several pointed out the distinction between heterodynes
originating in the receiv
On 4/3/2024 6:44 PM, Robert Strickland via Elecraft wrote:
Jim, does that include attachments?
No attachments. Elecraft started this reflector at least 25 years ago.
That's how reflectors were in those days, and many of the old ones still
exist. There are several hosted at contesting.com that
Jim, does that include attachments?
...robert KE2WY
On 4/2/2024 22:09, Jim Brown wrote:
On 4/2/2024 1:45 PM, Robert Strickland via Elecraft wrote:
let;s try again w/ pic.
This reflector is plain text only. It rejects everything else,
including formatted text.
73, Jim K9YC
__
On 4/2/2024 1:45 PM, Robert Strickland via Elecraft wrote:
let;s try again w/ pic.
This reflector is plain text only. It rejects everything else, including
formatted text.
73, Jim K9YC
__
Elecraft mailing list
Home: http://mailman.q
You can re-post as many times as you like but this stone-age reflector will
discard any images you attempt to share.
One solution is the put the image file in drop box, or similar, and share the
link.
Andy, k3wyc
__
Elecraft mailing l
let;s try again w/ pic.
On 4/2/2024 20:36, Robert Strickland via Elecraft wrote:
Thanks to those answering my request for noise reduction
sources/sites. Several pointed out the distinction between heterodynes
originating in the receiver and noise external to the receiver. I was
careless in the
Thanks to those answering my request for noise reduction sources/sites.
Several pointed out the distinction between heterodynes originating in
the receiver and noise external to the receiver. I was careless in the
wording of my original post for which I apologize. Since a picture is
worth many
Hi Robert,
You've used the term 'receiver noise', but specifically
mentioned heterodynes and harmonics as being of
concern. All receivers, Elecraft not excluded, have
internal spurious signals generated in the VFO and
BFO circuits as well as clocks for digital circuits in the
radio. The best way
I'd appreciate any info on sites/resources to help with receiver noise
mitigation. I'm especially interested in identifying the source of
heterodynes and harmonics that appear on some bands but not others. 15m
seems to be particularly vulnerable. I'm familiar with W9YC's papers on
this topic [v
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