Re: [IRCA] Broadband Cable Internet

[Tim Hills <thills@xxxxxxxxxxxxx>]

Patric:

The box in the yard isn't likely to cause any interference, you could 
probably run the cable directly to your radio and not get any noticeable 
noise. The line amps and filters on the cable systems (usually) have a 
pretty sharp cutoff below ~50MHz. Watch out for possible DC voltage if 
you try this at home ;) Once it's installed it will probably be grounded 
to the electrical ground. I switched the grounding block from electrical 
to Earth even though it wasn't causing a problem just to prevent future 
mystery noises.

The majority of the noise I found with cable internet was coming from 
the switching type wall-wart. I found the same for the router and hubs.

Some of our local thrift stores have boxes of old wall-warts and I 
managed to round up enough with the same voltage ratings and equal or 
higher current that are transformer based. Look for the big, heavy ones. 
If it wouldn't hurt to get whacked in the head with it isn't transformer 
based unless it's very small.

You can also check them with an Ohmmeter. If the meter reads <100 Ohms 
and stays steady it's transformer based, if it shows "open" or increases 
over time then it's a switching supply.

If your not going wireless make sure you have good quality CAT5e or CAT6 
cables, you'll have better network speed if you have more than a 10' or 
so run anyway. My wireless router is dead silent from 100KHz to 30MHz 
and I'd avoid using the USB network interface if it has one.

If your going from dialup to high-speed I think you'll be happy with the 
$ and effort as well spent.

Tim Hills
Sioux Falls, SD

On 9/23/2013 3:20, Patrick Martin wrote:
>   I thought before Charter gets here this week to install the Broadband,
> I would try one more experiment. So I ran a wire across the yard to my
> neighbors broadband box in the yard. A couple wraps around the box and
> then run it through the mtching transformer to the R8. I disconnected
> the SW EWE briefly and used that coax. Again, no noise noted that I
> could tell. I ran across the MW band and I could not find anything, so I
> am still hoping no issues, but at this point it doesn't sound like any.
>
> 73,
>
> Patrick
>
> Patrick Martin
> Seaside OR
> KGED QSL Manager


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