Re: [IRCA] Broadband Cable Internet

[Mike Hawkins <michael.d.hawkins@xxxxxxxxx>]

I would also recommend that before you allow the installer to leave the
premises, you run through all the frequencies you intend to listen to and
make sure you don't have any noise issues anywhere.  When Comcast installed
my internet and TV boxes, I had serious noise issues on my radio.  Their
"expert" said it couldn't be because of their box because everything was
working.  Their "expert" had never heard of a bad solder joint.  Everything
had the conductivity it was supposed to, so it worked fine for his
purposes.  It also radiated RF garbage in a 6-foot radius.  He replaced the
box. I tested it. It worked. Don't let him leave without testing!

Mike Hawkins



On Mon, Sep 23, 2013 at 8:15 AM, Tim Hills <thills@xxxxxxxxxxxxx> wrote:

> 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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