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Subject:
From:
John Miller <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Thu, 9 Sep 2010 08:23:07 -0400
Content-Type:
text/plain
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text/plain (107 lines)
That's what I thought but wasn't 100% sure. That should do it for you 
though, it's certainly worth a try it won't hurt.
----- Original Message ----- 
From: "colin McDonald" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, September 09, 2010 12:37 AM
Subject: Re: Wireless router


> cat6 is usually what it goes by i think.
> or shielded cat5 perhaps.
> me thinks cat6 though.
> 73
> Colin, v a6BKX
> ----- Original Message ----- 
> From: "John Miller" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Wednesday, September 08, 2010 9:38 PM
> Subject: Re: Wireless router
>
>
>> have you tried shielded Ethernet cables between the box and router? I
>> forget
>> exactly what it's called but I have a run around here somewhere,  haven't
>> seen it since the move but I still have about 15 boxes I have yet to go
>> through too and at least 3 are computer stuff. There is shielded Ethernet
>> cable out there though if you can find it, that *should* fix your 
>> problem.
>> I
>> have a 12 foot run of it here somewhere but not sure where. I have Tivo
>> hooked to my router with no problems with regular Ethernet cat5 cable.
>> Something I had a while back though did have a similar problem and that's
>> what I did to fix it. I don't know much about those boxes, but there's 
>> got
>> to be a fix.
>> ----- Original Message ----- 
>> From: "colin McDonald" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Wednesday, September 08, 2010 11:19 PM
>> Subject: Re: Wireless router
>>
>>
>>> as far as RFI issues.
>>> well, here's my personal situation.
>>> I have a 2wire wireless router/modem as supplied by my internet 
>>> provider.
>>> range is excellent, and wireless speed is exactly the same as when
>>> connected
>>> directly to the LAN.
>>> however, after some investigation recently, I found that all my really
>>> bad
>>> noise issues on HF and VHF/UHF, in fact, pretty much any where my radio
>>> receives, was coming from the router.  I tried ferrite rings, different
>>> electrical outlets and on and on, but the noise occurs even on HT's in
>>> the
>>> apartment.
>>> After some more trouble shooting, I actually isolated the problem to my
>>> digital PVR TV box.  Disconnecting that got rid of the noise
>>> utterly...not
>>> a
>>> peep of noise on HF or VHF.  the noise basically sounds like carriers on
>>> FM
>>> and hetrodyn on HF.  So i'm not really sure if it is the router causing
>>> the
>>> noise when transfering data down the fairly long run of cat5 to the tv
>>> box,
>>> or the tv box itself.  I tried ferrite rings on the tv boxes power 
>>> chord,
>>> as
>>> well as the network cable it uses...no luck in even quieting the radio
>>> noise.
>>> I've got a 20FT run of cat5 going to a computer in the radio room, and
>>> when
>>> I disconnect this cable from the router, the noise gets reduced a
>>> little...unplugging the tv box gets rid of it completely.  My thoughts
>>> are
>>> that the tv box is to blame here and is putting some crazy amount of 
>>> data
>>> noise onto the cables and thus making the smaller run of cat5 going to
>>> the
>>> pc act as a radiater of sorts for the noise.  Any other cables attached
>>> to
>>> the LAN seem to do the same thing, act as radiators.
>>>
>>> Really not sure what to do here.
>>> The noise can get up to 40 over S9 on VHF, so bad in fact that I can't
>>> monitor simplex frequencies or repeaters that don't have PL tones.  On
>>> HF,
>>> the hetrodyn is S8 to S9.  it's in different places across the bands, so
>>> I
>>> can still receive signals, as long as they aren't on frequencies where
>>> the
>>> noise occurs.
>>> this is digital TV, meaning that it is supplied over the internet and
>>> distributed in the house to digital boxes on the LAN from the router.
>>> So, I guess if you have tv boxes that you'll be connecting to the 
>>> router,
>>> you'll have to watch out for this.
>>> when the tv box is disconnected, the wireless doesn't seem to make any
>>> noise
>>> at all on HF, VHF or UHF.
>>> i've tried moving antennas and rerouting feedlines, no luck there 
>>> either.
>>> 73
>>> Colin, V A6BKX
>>> ----- Original Message ----- 

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