[Elecraft] (ot) noise reduction resources

[Fred Jensen]

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 I was trying to work TX5S.  I don't know what the carriers 
are from but they look like a steady CW carrier, not noise.

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73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

Robert Strickland via Elecraft wrote on 4/5/2024 12:59 PM:
> 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 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 words, I'm included a 
>> screen shot of my panadapter tuned to 15m [see below] with the 
>> "noise" spikes clearly pictured. I have not tried the house shut down 
>> with the radio operating off a battery. Other time demands, but will 
>> do so shortly. I'm sure that will be informative. Interesting that 
>> the spikes occur only in the vicinity of 15m. They gradually diminish 
>> outside 15m until they are completely gone by 20.000 and 22.000 MHz.
>> ...robert   KE2WY
>>
>>
>>
>>
>



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