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    Safecom Faceplate?

    This is a discussion on Safecom Faceplate? within the Cabling and faceplate help forums, part of the Sky Broadband help and support category; Has anyone got one of these http://safecom.cn/code/sub/category....11&subcatid=28 faceplates made by Safecom? Are they OK?...

    1. #1
      dgilbert2's Avatar
      dgilbert2 is offline Sky User Beta tester
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      Safecom Faceplate?

      Has anyone got one of these http://safecom.cn/code/sub/category....11&subcatid=28

      faceplates made by Safecom?

      Are they OK?


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    3. #2
      Keiran2K8's Avatar
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      It may just be me! But where is the cost??
      Personally iv never heard of the brand? Sorry!

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      dgilbert2's Avatar
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      @FibreOptic

      You can pick them up from Ebay traders for 3-4.

      They do get a mention on the AdslNation site here;

      http://www.adslnation.com/support/filters.php

      For the price, on paper they look OK??

    5. #4
      NewsreadeR's Avatar
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      I think the best person to ask for advice would be Darren from ADSL Nation, I am sure he will comment at some point
      ~ Never, ever, argue with an idiot. They'll drag you down to their level and beat you with experience ~

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      Im supprised the dont sell them themselves~!

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      Could be that they aint too good, and Darren dont want to sell an inferior product, we just don't know.

      Hopefully in the future we could get samples to try from different companies and then maybe do a review....

      HD would be good for me to try Sky
      ~ Never, ever, argue with an idiot. They'll drag you down to their level and beat you with experience ~

    8. #7
      Keiran2K8's Avatar
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      yeah! lol That is a good suggestion? Maybe in the future?

    9. #8
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      http://www.adslnation.com/support/filters.php

      Just spotted that the schematics at the bottom of the above page show a connection to pin 4 of the phone socket. I thought that pin 4 was "not used, but connected for neatness"?

      Confused

    10. #9
      adslnation's Avatar
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      The confusion re numbering is that there are two standards for numbering BT plugs. There is the BT version and the ISO standard, they are both mirror images of each other because one numbers the pins from the back of the plug and the other from the back of the socket.

      The BT numbering scheme that uses 2 3 & 5.

      We have spent a a small fortune amassing a big box of filters of all shapes and sizes and have done a great deal of testing. What we have found is there is no practical way to perform an academic test. We have spectrum analyzers etc to look at the theoretical performance and spent many hours looking at results both on a real line and using a signal generator. It is not unusual to see a filter that looks good on simulated tests but fails to perform adequately in real life.

      We obviously believe that our filters are the best but I think it is generally accepted that they are the best quality. The main reason they have that reputation is we started by selling other companies filters like Excelsus etc but found that although they met the BT SIN specifications in theoretical tests there would be quite a lot of situations where things wouldn't work properly. We decided to buy every filter we could find and do some real life tests to see what worked and what didn't. We then knew what to avoid and settled on our current filter in which the design that has some very radical deviations from the typical LC filter design. This design looks rather odd on the drawing board but really makes a difference when used in real world applications.

      We have continued to collect new filters and test them to see if anyone comes up with some interesting new twist on filter design. It has to be said though that there are very few filter designs. The main focus seems to be how can we make the filter cheaper by reducing the component count but still get acceptable results.

      I like taking things apart and finding out how they work and how to make them work better. I guess you can call it a bit of an obsession, I'm forever picking faults in things and saying if only they made this small change. I figured that we may as well make our findings available to everyone for anyone interested in the hope that it is useful. Obviously there will be some people who will look at it as a cynical way to promote our filters but the main reason for producing that page is just to show people that there are massive differences in filters and some are actually total junk. The filters shown are the most common ones, those not listed are often just re-badged versions of those listed.

      Safecom are well known for cheap and chearful so the brand is not exactly one to be associated with adslnation. It just so happens that the Safecom filter listed is not made by them and is scores reasonably well.

      Sorry such a long post, I hope it doesn't sound like trying to promote adslnation, not the intention.

    11. #10
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      @adslnation

      Many thanks for your detailed post clarifying the questions.

      I forgot about the pin numbering on the plug/socket itself - doh!

      You should be commended for not completely putting down a competitors product!

      One technical question for you, assuming everything else equal, in your experience does the adslnation filter give better ADSL performance or does it just improve the voice side?

      I suppose what I am trying to determine is whether some filters actually have a negative impact on the actual ADSL signal, even though the ADSL signal itself is connected direct to the modem.

      Sorry for the awkward questions

      thanks again.

     

     
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