Cable Builders: Any silver-coated center conductor coax you know of?

Discussion in 'Archived Threads 2001-2004' started by Bob McElfresh, May 13, 2002.

  1. Bob McElfresh

    Bob McElfresh Producer

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    Some of the cable vendors offers a silver-coated center-conductor coax. I thought Belden had something like this, but the keyword "Silver" in the Belden Cable Finder does not show any RG6-style cable.

    Is there a silver-coated coax that is popular among DIY cable builders? Whats the mfg and part number?
     
  2. Chu Gai

    Chu Gai Lead Actor

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    Not a cable builder, but perhaps the information below will be useful. These cables are typically used in DS-3 and -4 applications about which you can read on the web. CommScope's site has some information regarding the DS-3 and -4 applications that may suffice for most. I don't know if Canare or Gepco or any other players have similar stuff or are developing it also. I think they're targeting a different market niche.
    CommScope
    Part#73501M
    Impedence75 Ohm
    Capacitance17.5 pF/ft
    Velocity of Propogation:78%
    DCR:
    Conductor:39.5 Ohms/1000 ft.
    Shield:5.6 Ohm/1000 ft.
    SRL:30 dB Min. (15-95 MHz) 100% Sweep Tested
    Down 6.79 db/100 ft. @200 MHz
    Center Conductor:26 AWG silver plated solid copper
    Dielectric:Foamed PE
    Shield:Foil: Al/Polyester Tape
    100% Coverage
    Braid:38 AWG Tinned Copper
    92% Coverage
    Jacket:Gray PVC
    Part#:734S1
    Impedence75 Ohm
    Capacitance17 pF/ft
    Velocity of Propogation:80%
    DCR:
    Conductor:11.0 Ohms/1000 ft.
    SRL:30 dB Min. (5-95 MHz) 100% Sweep Tested
    Down 3.44 db/100 ft. @200 MHz
    Center Conductor:20 AWG silver plated solid copper
    Dielectric:Foamed PE
    Shield:Foil: Al/Polyester Tape
    100% Coverage
    Braid:34 AWG Tinned Copper
    80% Coverage
    Jacket:Gray PVC
    They make other types of silver coated copper too, some 50 ohm stranded stuff
    Belden735A1
    Belden734D1
    Similar specifications to the CommScope. You'll see minor variations in the shielding, small stuff in the velocity of propogation, but for all intents and purposes, we're talking equivalents.
    Helix/Hitemp www.drakausa.com
    You'll find information on their 734 and 735 series of cables...also largely interchangeable with the above. I believe they deal with sales representatives so I guess if you really had a hankering for their product, you'd need to contact them to see where its available.
    Generally speaking I'd look towards contacting the individual companies by phone (toll free #'s can be had at their websites) and speak to someone about where and in what kind of lengths one can obtain their product.
    Also for those who are into having cable assemblies made up (talking large quantities here now) numerous places will do that such as www.ekriscable.com with the benefit in many cases that we're dealing with 9000 certs and all that. These custom assemblers will work with people/companies to design cable assemblies to their specifications. Maybe even if the quantity is great enough, changing the braiding just a bit. Product differentiation and that search for "i've got something they don't have" thing you know. I'm sure BetterCables as others has contracted with somebody to OEM their stuff for them.
    Hope this helps to some degree.
     
  3. Kevin Coleman

    Kevin Coleman Second Unit

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    Hey guys,
    I found some of the Belden 734D1 for 115.00 for 500' shipped.
    Kevin C. [​IMG]
     
  4. Bob McElfresh

    Bob McElfresh Producer

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    Chu - thanks. [​IMG]
    Ok Kevin, where did you find it? You KNOW you want to tell us....
     
  5. Kevin Coleman

    Kevin Coleman Second Unit

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    Of course I will tell you guys.
    It is at Accu-tech
    They have to special order it but the guy I talked to called Belden and then called me back and said they had rolls of 500' in stock at Belden and he could ship one to me for 115.00. Now this is not 3 channel stuff but single channel. You would have to use some techflex to bundle three runs together but even doing that it still comes up a few cents a foot cheaper than Canare V3-5CFB.
    My only question is is how would this stuff perform as component video cable compared to the V3-5CFB? The specs don't seem much different.
    Kevin C. [​IMG]
     
  6. Bob McElfresh

    Bob McElfresh Producer

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  7. Chu Gai

    Chu Gai Lead Actor

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    I've also seen some Lucent cable out there. Considering that Lucent has taken a beating in its stock prices, there may be some inexpensive stuff out there from companies that Lucent fronted equipment for and then subsequently went belly-up.
     
  8. Phil A

    Phil A Producer

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    For crimp compatability questions, you can send an E-Mail to [email protected] They will answer questions for anything listed in their catalog which includes Canare and some of the Belden stuff. Canare used to have a chart somewhere on their website but it only covered a ltd. amt. of Belden stuff.
     

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