[Elecraft] New Astron Switching PS RFI?

[John Stengrevics]

Has anyone encountered noise on 50 MHz with the Elecraft/Powerwerx power supply for the K3S?

Thanks & 73,

John
WA1EAZ

> On May 18, 2020, at 2:51 PM, K9FD <merv.k9fd at gmail.com> wrote:
> 
> I had two of them and both had RFI,  on 12 meter band,  it was a broadband noise of
> S2 or so.   If your noise level is higher than S3 then you may not even notice it as it
> was noise similar to the noise floor, as wide as the band.
> Had other "spots" on other bands that had hash but not too bad.
> Have tried many switchers and every one I have had put noise someplace,  if you mention
> that on this reflector all you get is a tirade of people with S5 to S6 band noise levels
> screaming they hear nothing,  they are correct they hear nothing.
> Elecraft even admits the switcher they sell has noise.
> I have a very very low external noise level at this QTH, so linear supplies are the only way
> I am sure to be free of noise, birdies, and crap internally. YMMV
> Merv K9FD
>> EME on 6m,  terrestrial on 2 & 432 with antennas directly above the shack. Noise floor very low (usually) so anything added very apparent. I haven’t noticed anything at HF.
>> 
>> The only problems I’ve had at HF were a particular model of Samsung monitor, and PGE powerlines where HV ran on the old ceramic insulators. K6TU’s recommendation to file complaints with PUC was effective in getting those replaced.
>> 
>> These SS-30M supplies have been around a long time. Do others report RFI problems?
>> 
>> 73
>> Josh W6XU
>> 
>> Sent from my mobile device
>> 
>>> On May 18, 2020, at 10:30 AM, Jim Brown <jim at audiosystemsgroup.com> wrote:
>>> 
>>> Sounds like it's quiet on the bands where you do EME. What bands are those?  Anything on HF?
>>> 
>>> 73, Jim K9YC
>>> 
>>>> On 5/17/2020 9:47 PM, Josh Fiden wrote:
>>>> Only when the moon’s at the same heading!
>>>> Shack is E of array which is on about 25’ of Rohn 45, so bottom antennas are quite low.
>>>> House is SE and I have to turn off fluorescent lights and washing machine.
>>> ______________________________________________________________
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:Elecraft at mailman.qth.net
>>> 
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to josh at voodoolab.com
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to merv.k9fd at gmail.com
> 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to jstengrevics at comcast.net