[UK-CONTEST] Broadband Box - Maximising RF immunity

[David Ferrington, M0XDF]

Again (as per bottom of this trail), I resolved all my RFI problems in  
my ADSL by fitting a filter made by the K-Y filter company, see <https://www.merchantamerica.com/kyfilters/index.php?ba=view_category&category=1993 
 >.

That same filter is now in use by a friend (I now have cable modem)  
and doing the same excellent job.

-- 
73 de M0XDF

On 27 Mar 2009, at 11:45, ALEX LISTER wrote:

> Robin
> Re Interference problem
>
> INCREASE UR ADSL SPEED AND HELP WITH RFI
> Look at http://www.solwise.co.uk/adsl_splitters.htm
> There is lots other info on the Net. Some of it wrong of course !
>
> But Highly recommend that u :-
> Fit a decent quality PSTN/ADSL adjacent to point of entry into  
> property.
> Remember to put it adjacent to urservice provider socket NTL/BT
> This means u split the ADSL from the phone connections much better  
> than the external filter supplied by ISP,s for routers.
> So the phone line is now isolated from ADSL
> If that means you cannot fit ur router at this point of entry  
> suggest u wire from this new NTE  ADSL skt
> using RJ45. Or fit wireless router.
> Clean up all those old gash phone sockets do it and U will have a  
> neat installation and with luck a  FASTER ADSL Speed.
> Should help with RFI as the filter is essentially a low pass filter  
> for the telephony component.
> Rem do not break direct into service provider master socket as it.s  
> always obvious if aan installtion has not been completed by BT/NTL  
> persons.
> Bugger it up and u could get a very expensive bill.
>
> However if u have a modern NTE5 u can wire ur kit directly.NTL or BT.
>
> Or get me to do it at £25.00 per hour plus travel and board.!!
>
> Must sort a article some time for Radcomic.
>
>
> Alex Lister G8FCQ
> alexcom22 at btopenworld.com
> 0753 120 1640
>
>
>
> ----- Forwarded Message ----
> From: "Andy Cook, G4PIQ" <g4piq at btinternet.com>
> To: uk-contest at contesting.com
> Sent: Thursday, 26 March, 2009 8:15:51 PM
> Subject: Re: [UK-CONTEST] David G4ASR Broadband Box - Maximising RF  
> immunity
>
> I've said it before, but I still recommend trying the simple bell-wire
> disconection trick (documented at
> http://www.draytek.co.uk/support/kb_vigor_linefaults.html amongst  
> other
> places). It increased my line-sync rate from 4 Mb/s to 7.5 Mb/s and  
> changed
> a situation where I would knock out the DSL with 5W on 40m or 1W on  
> 80m to
> being completely immune to 100W. This is with a very rough end-fed  
> antenna
> close to the modem.
>
> 73,
>
> Andy, G4PIQ
>
>
>
> -----Original Message-----
> From: uk-contest-bounces at contesting.com
> [mailto:uk-contest-bounces at contesting.com] On Behalf Of Robin Thompson
> Sent: 26 March 2009 19:08
> To: uk-contest at contesting.com
> Subject: Re: [UK-CONTEST] David G4ASR Broadband Box - Maximising RF  
> immunity
>
>
> Looks like just what I need as well !
> I frequently knock out my adsl with RF - one of the snags of having  
> ends of
> dipoles terminating over the house and having long telephone cables  
> running
> all over the house! Are they available in the UK ?
>
> Robin
> G3TKF
>
>> -----Original Message-----
>> From: uk-contest-bounces at contesting.com [mailto:uk-contest-
>> bounces at contesting.com] On Behalf Of David Ferrington, M0XDF
>> Sent: 23 March 2009 16:50
>> To: David, G3YYD
>> Cc: uk-contest at contesting.com
>> Subject: Re: [UK-CONTEST] David G4ASR Broadband Box - Maximising RF
>> immunity
>>
>> Take a look at https://www.merchantamerica.com/kyfilters
>>
>> fantastic on ADSL - stopped all my RFI into the ADSL
>>
>> --
>> 73 de M0XDF
>>