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Re: [IRCA] off grid noise

I recently discovered that I had two older ethernet adapters in line for my home network, the power supplies for which over the past year or so have apparently 'gone south' in terms of the noise they produce. Both are switching supplies, both 10+ years old and in continuous use, so that is to be expected. I'd had them so long that I didn't focus on the fact that they'd do this at some point.


Goes to show that you never know what's going to cause trouble.  2 years ago it was a relay on the old now-replaced furnace. Before that it was the detectors for the automatic garage doors.


All of this is without any appliances, etc. using the "internet of things", which I simply won't have unless there's no escape.


Russ Edmunds

WB2BJH

Blue Bell, PA

Grid FN20id

________________________________
From: IRCA <irca-bounces@xxxxxxxxxxxxxxxx> on behalf of Neil Kazaross <neilkaz58@xxxxxxxxx>
Sent: Monday, January 30, 2017 3:33:53 PM
To: Mailing list for the International Radio Club of America
Subject: Re: [IRCA] off grid noise

Interesting discussion guys. Too much noise comes from this supposed high
tech home of mine. There's probably lots I can do.  73 KAZ

On Mon, Jan 30, 2017 at 1:04 PM, Guy Atkins <dx@xxxxxxxxxxxxx> wrote:

> I'm thankful to Chuck for mentioning the Monster Power inverter that he
> found so low in RFI noise. My search for a low noise inverter began years
> ago when I was trying to use a Racal RA6790/GM in a DC-only DXpedition
> setting. Even with my so-called "medical grade, low RFI" inverter placed
> inside a metal can 50 feet from the receiver and with RF chokes on I/O
> leads, there was far too much interference. I gave up trying to find a low
> noise AC inverter.
>
> My current FDM-S2 is powered by USB, but there are other times on a
> DXpedition or around the house when a good inverter is handy to have.
>
> Anyway, thanks to Chuck's tip I snagged a new, unopened 300 watt Monster
> Power inverter, model MCPI-300 for my "make an offer" price of $16.00 on
> Ebay. Evidently someone didn't know the value of what they had, as these
> were $130 units before they were discontinued. Or, they were just clearing
> house and didn't care how low a price it might sell for.
>
> Guy Atkins
> Puyallup, WA
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