On 5/18/2020 11:38 AM, Josh Fiden wrote:
These SS-30M supplies have been around a long time. Do others report RFI
problems?
Josh, Bob, and all,
I have no experience with Astron SMPS, and have seen nothing. I do,
however, own several no-name switchers advertised as quiet that are
quite
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 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
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.
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
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
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.
73
Josh W6XU
Sent from my mobile device
> On May 17, 2020, at 7:43 PM, Jim Brown
On 5/17/2020 3:48 PM, Josh Fiden wrote:
Running 6m EME, a demanding application, I’ve seen no RFI.
Does your EME array point at the shack?
73, Jim K9YC
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Almost nothing lasts or works forever. Usually electrolytic caps dry out,
their MFD value decreases. Very easy and inexpensive repair.
Bob, K4TAX
Sent from my iPhone
> On May 17, 2020, at 7:58 PM, Michael Walker wrote:
>
> I had 2 of them and they both went noisy after 15 years.
>
> I
I had 2 of them and they both went noisy after 15 years.
I suspect they have a re-capping in their future, but right now, they are
in my electronics junk pile.
Mike va3mw
On Sun, May 17, 2020 at 6:50 PM Josh Fiden wrote:
> Have there been any design changes to SS-30M?
>
> I have a pair that
Have there been any design changes to SS-30M?
I have a pair that I’ve been using for 15+ years. Running 6m EME, a demanding
application, I’ve seen no RFI. Unlike some laptop adapters & monitors that have
come and gone. If they haven’t changed them, I’ve had good success.
73
Josh W6XU
Sent
On 5/17/2020 2:27 PM, Bob McGraw K4TAX wrote:
> I have 2 of the Astron SS-30M supplies on my desk for my 2 stations. I
> have observed no evidence of RFI issues. I find them to be very
> reliable power supplies.
I have an Astron SS-50M and the only noise is the fan - no RFI.
73 de K2ASP -
I have 2 of the Astron SS-30M supplies on my desk for my 2 stations. I
have observed no evidence of RFI issues. I find them to be very
reliable power supplies.
73
Bob, K4TAX
On 5/17/2020 4:23 PM, Tony wrote:
All:
Has anyone tested the latest Astron switching power supplies for
noise?
All:
Has anyone tested the latest Astron switching power supplies for noise?
The reviews I've read say that they produce no RFI.
Thinking about the Astron SS-30M for the K3S which is rated at 25 amps
continuous duty.
Tony
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