Re: [amsat-bb] coax types

[Bob Nielsen <nielsen@xxxxxxxxxxxx>]

There is a PTFE coax which is approximately the same size as RG-174/U
(or possibly slightly smaller).  I have used it in the past, but forget
the designator.  I expect it would be in the Times Wire and Cable and
other catalogs.  As I recall, it was single shielded and had a stranded
silver-plated copper center conductor.

Another good alternative to RG-142 is RG-400, which is the same size,
but has a stranded center conductor and is somewhat more flexible.

Bob

On Fri, Feb 04, 2000 at 03:43:10PM -0500, Santillo, John wrote:
> RG-174 has a solid Polyethylene (PE) dielectric.  PTFE coax type is a RG-141
> or 
> RG-142.  They are also double shielded and about twice as thick as the 
> RG-174.  
> 
> Most of the PTFE coax cables are double shielded and I assume Symek
> wants to reduce the possibility of RF emissions from the cable.  
> 
> RG-214 is a common coax cable but it's a solid PE 
> and double shielded but it's pretty hefty stuff.
> 
> 73
> 
> John
> N2HMM
> 
>  > -----Original Message-----
>  > From:	Mike West [SMTP:wl7bqm@gci.net]
>  > Sent:	Friday, February 04, 2000 2:14 PM
>  > To:	amsat-bb@AMSAT.Org
>  > Subject:	[amsat-bb] coax types
>  > 
>  > Question for the coax experts.
>  > 
>  > I'm installing a Symek IFD board into a FT-736R. They call for 50 ohm PTFE
>  > insulated coax cables. I can't find a thing on (PTFE). Is that anything
>  > like
>  > RG-174 ???
>  > 
>  > Thanks, mike WL7BQM
>  > 
>  > 
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-- 
Bob Nielsen, N7XY (RN2)                    nielsen@primenet.com
Tucson, AZ DM42nh  QRP-L #1985             http://www.primenet.com/~nielsen
 
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