[Elecraft] KPA1500 RFI on 10 Meters

[K9MA]

Hi Pete,

It did help to put a couple ferrites on the PS control cable. It's now 
barely perceptible, but that's with an urban noise level. It's 
definitely coming in via the antenna, something over 100 ft away.

73,
Scott K9MA


On 12/14/2019 21:03, N4ZR wrote:
> I just tried that with my KPA-1500, Scott, and could not hear any 
> change.  Another one of those RFI gremlins!
>
> 73, Pete N4ZR
> Check out the Reverse Beacon Network
> at <http://reversebeacon.net>, now
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>
> On 12/14/2019 4:43 PM, K9MA wrote:
>> I guess it just shows how little I've been on 10, but I've had the 
>> KPA1500 for over a year now, and I just noticed that when I turn it 
>> on, my noise floor on 10 goes up about 3 dB. (And that's from an 
>> urban noise floor.) It's pretty flat over much of the band, not 
>> typical switching supply noise. Has anyone else experienced this and 
>> found a cure? (Other than using the old amp tube.)
>>
>> 73,
>>
>> Scott K9MA
>>
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-- 
Scott  K9MA

k9ma at sdellington.us