[SEDXC] NOISE OF THE DAY

[Scott Brown - KD4YDD]

Interesting...

I should really check mine in the house.

I have one directly above my shack, but have not noticed anything crazy as of yet. Knock on wood.

Thank for the info.

What was your baseline noise figure on 160 prior the issue Mike (K4PI)?

-Scott
KD4YDD

Sent from my iPhone

On Sep 18, 2012, at 8:12 PM, W5JR - Mike <w5jr.lists at att.net> wrote:

> I had a similar Comcast wall wart issue this past week when trying to work NH8S on 160m. This is a new Comcast. Ox since last season. I now leave it unplugged when working 160. Just like I have turn off the water for the touch on touch off faucet in the kitchen. 
> 
> tnx
> Mike
> 
> On Sep 18, 2012, at 6:30 PM, "Mike Greenway" <K4PI at BELLSOUTH.NET> wrote:
> 
>> I had noticed recently I had an abnormally high noise level, S7-8 and on some bands worse.. 30-40 DB over on 160 M.  Finally decided to try and find what was going on.  It did not sound line normal line noise and on the panadapter I could see some stationary peaks every 35 Khz or so.  Got a gel cel I have to run the K3 and powered the house down and the noise was gone.  Bringing each breaker back on I finally found it was one for the bedroom.  To make it short, it was the wall wart for the Comcast box at the TV in the bed room.  Replaced it with one I have of the same voltage and all is okay now.  I will get over to Comcast and change it out, but watch out for wall warts they can really cause some RFI.  I try to eliminate these things in the shack with a standard linear DC supply and stay away from all switchers.  73 Mike K4PI
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