Special type of coax - need info

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Special type of coax - need info

Bill Clarke
30 years ago, when I was living in Fairfax County, VA, the TV cable was
shipped around on a double coax cable. It resembled lamp cord or zip
cord, and was two parallel coax lines with a webbing between them. I am
in need of the proper name for that cable, so I can search some out.

I used it as feed for a full size lazy 80 meter loop - about the same as
tuned feeders would be used. It worked very well on all bands -
providing lots of DX and a ton of local coverage also. Not a tri-bander
- but it beat the socks off other wires and verticals. I want to
duplicate that antenna this spring.

Thanks,

Bill W2BLC K-Line

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Re: Special type of coax - need info

AJ8MH-Radio.Joe.Hutchens
Search for: Belden 9077 Dual RG6 Coax

Joe
( www.aj8mh.com )

On 1/16/2018 2:55 PM, Bill wrote:

> 30 years ago, when I was living in Fairfax County, VA, the TV cable
> was shipped around on a double coax cable. It resembled lamp cord or
> zip cord, and was two parallel coax lines with a webbing between them.
> I am in need of the proper name for that cable, so I can search some out.
>
> I used it as feed for a full size lazy 80 meter loop - about the same
> as tuned feeders would be used. It worked very well on all bands -
> providing lots of DX and a ton of local coverage also. Not a
> tri-bander - but it beat the socks off other wires and verticals. I
> want to duplicate that antenna this spring.
>
> Thanks,
>
> Bill W2BLC K-Line
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

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Re: Special type of coax - need info

Dennis Moore
In reply to this post by Bill Clarke
Are you thinking of RG-6/U Twin Parallel Cable?

73, Dennis NJ6G


On 1/16/2018 11:55, Bill wrote:

> 30 years ago, when I was living in Fairfax County, VA, the TV cable
> was shipped around on a double coax cable. It resembled lamp cord or
> zip cord, and was two parallel coax lines with a webbing between them.
> I am in need of the proper name for that cable, so I can search some out.
>
> I used it as feed for a full size lazy 80 meter loop - about the same
> as tuned feeders would be used. It worked very well on all bands -
> providing lots of DX and a ton of local coverage also. Not a
> tri-bander - but it beat the socks off other wires and verticals. I
> want to duplicate that antenna this spring.
>
> Thanks,
>
> Bill W2BLC K-Line

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Re: Special type of coax - need info

Russ-2
....like Belden 9077?

https://catalog.belden.com/techdata/EN/9077_techdata.pdf

We used it when I worked for Palmer Cablevision in Naples, FL in the early 80's
13 channels on one, 13 on another with a switch on top of your TV...

Russ KD4JO

-----Original Message-----
From: [hidden email] [mailto:[hidden email]] On Behalf Of Dennis Moore
Sent: Tuesday, January 16, 2018 3:06 PM
To: [hidden email]
Subject: Re: [Elecraft] Special type of coax - need info

Are you thinking of RG-6/U Twin Parallel Cable?

73, Dennis NJ6G


On 1/16/2018 11:55, Bill wrote:

> 30 years ago, when I was living in Fairfax County, VA, the TV cable
> was shipped around on a double coax cable. It resembled lamp cord or
> zip cord, and was two parallel coax lines with a webbing between them.
> I am in need of the proper name for that cable, so I can search some out.
>
> I used it as feed for a full size lazy 80 meter loop - about the same
> as tuned feeders would be used. It worked very well on all bands -
> providing lots of DX and a ton of local coverage also. Not a
> tri-bander - but it beat the socks off other wires and verticals. I
> want to duplicate that antenna this spring.
>
> Thanks,
>
> Bill W2BLC K-Line

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Re: Special type of coax - need info

Lynn W. Taylor, WB6UUT-2
In reply to this post by Bill Clarke
I've seen the name "TwinAx" somewhere.  It was probably networking or
terminals, at least 30 years ago.

73 -- Lynn

On 1/16/2018 11:55 AM, Bill wrote:
> 30 years ago, when I was living in Fairfax County, VA, the TV cable was
> shipped around on a double coax cable.
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Re: Special type of coax - need info

David Christ
In reply to this post by Bill Clarke
Twinax under that name was a two conductor shielded coax like cable for balanced antennas.  The R-389 for instance had a connector for that kind of cable.
<https://www.prowireandcable.com/ib/belden-9207/9207/?gclid=EAIaIQobChMIl_Hb1q3d2AIVhj1pCh0MkAd5EAAYASAAEgJSKfD_BwE>

But are you sure you are not thnking about the cable for Token-Ring networks?  That was two pair for IBM networks of about 25 years ago.  Stiff and ugly to work with.

David K0LUM


> On Jan 16, 2018, at 2:26 PM, Lynn W. Taylor, WB6UUT <[hidden email]> wrote:
>
> I've seen the name "TwinAx" somewhere.  It was probably networking or terminals, at least 30 years ago.
>
> 73 -- Lynn
>
> On 1/16/2018 11:55 AM, Bill wrote:
>> 30 years ago, when I was living in Fairfax County, VA, the TV cable was shipped around on a double coax cable.
> ______________________________________________________________
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Re: Special type of coax - need info

Jim Brown-10
On 1/16/2018 12:53 PM, David Christ wrote:
> Twinax under that name was a two conductor shielded coax like cable for balanced antennas.  The R-389 for instance had a connector for that kind of cable.

I am NOT looking for TwinAX nor two coaxes wither their jackets bonded.
RG400 is what I'm looking for, and thanks to those who correctly read my
mind. :)

73, Jim K9YC

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Re: Special type of coax - need info

Bob McGraw - K4TAX
That is a coax with a double shield except the shields are each insulated.

Bob, K4TAX


Sent from my iPhone

> On Jan 16, 2018, at 3:09 PM, Jim Brown <[hidden email]> wrote:
>
>> On 1/16/2018 12:53 PM, David Christ wrote:
>> Twinax under that name was a two conductor shielded coax like cable for balanced antennas.  The R-389 for instance had a connector for that kind of cable.
>
> I am NOT looking for TwinAX nor two coaxes wither their jackets bonded. RG400 is what I'm looking for, and thanks to those who correctly read my mind. :)
>
> 73, Jim K9YC
>
> ______________________________________________________________
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> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>


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Re: Special type of coax - need info

Gary K9GS
In reply to this post by Bill Clarke
Dual or Siamese coax


73-Gary K9GSĀ 
-------- Original message --------From: Bill <[hidden email]> Date: 1/16/18  1:55 PM  (GMT-06:00) To: [hidden email] Subject: [Elecraft] Special type of coax - need info
30 years ago, when I was living in Fairfax County, VA, the TV cable was
shipped around on a double coax cable. It resembled lamp cord or zip
cord, and was two parallel coax lines with a webbing between them. I am
in need of the proper name for that cable, so I can search some out.

I used it as feed for a full size lazy 80 meter loop - about the same as
tuned feeders would be used. It worked very well on all bands -
providing lots of DX and a ton of local coverage also. Not a tri-bander
- but it beat the socks off other wires and verticals. I want to
duplicate that antenna this spring.

Thanks,

Bill W2BLC K-Line

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Re: Special type of coax - need info

Bill Clarke
In reply to this post by Bill Clarke
Thanks to all that replied. I was reminded that the shielding is
aluminum etc. I had forgotten that little detail over the years.

I do now recall that the cable I used did have copper - it was used
exclusively at the head-ends and was hard to get.

Hence, I think I will parallel some RG8X, use cable ties and Goop, and
make my own. That way I can make solid soldered connections for everything.

Gotta do things right the first time and have it last many years with no
further service.

Thanks for the reminder.

Bill W2BLC K-Line


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