[UK-CONTEST] ADSL Modem RFI

[Steve White]

I use a Netgear DG834 ADSL modem / wireless router, which is reckoned to be 
one of the better models, but one whiff of 160m or 80m and it used to lock 
up instantly. Recently I bought one of these, fitted it onto the incoming 
master socket and ALL my lockup problems went away.
http://www.tamarshop.co.uk/index.php?main_page=product_info&cPath=109_108&products_id=363

As well as two sockets on the front and the telephone line terminals at the 
back, this faceplate also contains terminals on the back to extend the ADSL 
signal if you don't want to plug your modem/router into the master socket. I 
used a spare pair in the internal wiring of the house to take the ADSL 
signal through to the room where I have my modem/router. There I fitted a 
second telephone outlet socket, purely for ADSL. Into this second socket I 
plug a modified ADSL filter, just to use it as an adapter from the BT type 
socket to the ADSL modem type socket. I modified this filter for ADSL use 
only by opening up the case and removing the two inductors at the input of 
the telephony filter (the ADSL signal goes straight through these, with no 
filtering anyway). It works fine and doesn't look any different to a 
standard ADSL filter, so here's a tip... Mark the filter and socket "ADSL 
only", so that nobody will accidentally try to use either for a telephone.

Steve, G3ZVW

> Message: 1
> Date: Thu, 12 Nov 2009 08:43:31 -0000
> From: "Chris Tran GM3WOJ" <zl1ct1 at gm7v.com>
> Subject: [UK-CONTEST] ADSL modem RFI
> To: <uk-contest at contesting.com>
> Message-ID: <000301ca6397$0523e350$6601a8c0 at sempron>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> Hello uk-contesters
>
> I've searched the archives unsuccessfully - I am having trouble keeping 
> 160m
> and 80m RF out of our ADSL (WiFi) modem - I seem to think there was a 
> thread
> about this on this reflector within the last 2 years ?
>
> I've tried all the usual 'fixes' - probably the only real solution is to
> simplify our obsolete wired phone system which is behaving like an antenna
> within the house - but I would like to re-read the suggestions made
> previously.
>
> 73
> Chris   GM3WOJ/ZL1CT
>
>
>
>