I have successfully used standard 50 Ohm type N connectors on 75 Ohm CATV
coax. I purchased some brass tubing from a hobby shop that fit the ID of the
center pin of the 50 Ohm connector and sweat soldered a short piece to the
copper clad center conductor on the coax. With this modification the normal 50
Ohm connectors fit the 75 Ohm cable and work just fine.
73 - Jim W5ZIT
--- On Fri, 5/8/09, N3QAM <n3...@comcast.net> wrote:
From: N3QAM <n3...@comcast.net>
Subject: Re: [Repeater-Builder] Re: Identify a coax and possible connector
vendor
To: Repeater-Builder@yahoogroups.com
Date: Friday, May 8, 2009, 9:45 AM
There is a whole write up on the net
somewhere on how to use the 75 ohm hardline connectors and covert them to a
n conector or pl-259 with pics . If you need any let me know as i am a
line tech for a cable company . Unfotunetly it will be hard for me to core the
cable for you to install the connectors unless you are close by. If you get to
that point , i would suggest going to the local office of your cable company (
not a payment center but one that the line techs and construction department
works out of) and ask them if they can core them for you. The connetors
installs
differently than say a PL-259 would and are either a 2 piece or a 3
piece.
The coring tool actually cores out the dialetric
and leaves the center conductor exposed with the shield. i do not have any here
at the house to take pictures of it , nor be at work for the next month (
due to a back surgery).
But feel free to contact me if you have any further
questions.
Keith
N3QAM
----- Original Message -----
From:
pontotochs
To: Repeater-Builder@ yahoogroups. com
Sent: Friday, May 08, 2009 10:35 AM
Subject: [Repeater-Builder] Re: Identify
a coax and possible connector vendor
Thanks to N3QAM and Ben. You guys nailed it with the P3 500 from
China.
I also appreciate Ben's tip on how to use a
PL259.
Regards,
Rick, N5RB
--- In Repeater-Builder@ yahoogroups. com,
"N3QAM" <n3...@...> wrote:
>
> like 500 p3 or
variant
>
> ----- Original Message -----
> From: N3QAM
> To: Repeater-Builder@ yahoogroups. com
> Sent: Thursday, May 07, 2009 8:18 PM
> Subject: Re:
[Repeater-Builder] Identify a coax and possible connector vendor
>
>
>
>
>
>
> sounds like some 75 ohm
cable self support
> ----- Original Message -----
> From:
pontotochs
> To: Repeater-Builder@ yahoogroups. com
> Sent: Thursday, May 07, 2009 8:16 PM
> Subject:
[Repeater-Builder] Identify a coax and possible connector vendor
>
>
> Hi,
> One of the ham repeater owners in the area has
acquired a coax that I can't identify. No markings on the jacket. It has a
nominal jacket diameter of 0.58 inches (it looks to be the 'standard' black
PE), it has a solid aluminum shield (0.51" OD), about 0.028" thick. The
dielectric looks to be the PE foam. The center conductor is copper over
aluminum with a 0.11" OD (about #10 gauge). It looks to be 50 ohm based on a
rough calculation.
>
> The interesting thing about this cable is
that it has a messenger wire molded to the outside of the jacket. It is about
# 10 gauge steel. It is not wrapped around the coax, just to one side, about
0.2 inches away. When I say molded, I mean that messenger wire and coax have
the same black insulator jacket with a rib of the same material between
them.
>
> I am looking for a source of connectors for this cable,
so any help identifying it would be appreciated.
>
> Thanks for
your help in advance,
> Rick, N5RB
>
