Home » Public Forums » GMCnet » RG59 coax OFF TOPIC
| RG59 coax OFF TOPIC [message #222637] |
Mon, 16 September 2013 07:55  |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
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You HAM radio guys might know this. What is RG 59 used for? I came home from the Army 40+ years ago with a full, new in the box, spool (500'???). Still in the box.
Is it still any good?
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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| Re: [GMCnet] RG59 coax OFF TOPIC [message #222640 is a reply to message #222637] |
Mon, 16 September 2013 08:17  |
Robin Hood
Messages: 1078
Registered: April 2011
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RG59 is b-flat bog standard plain vanilla "TV cable." Yours is probably
actually milspec. 75 ohm impedance. You wouldn't want to use it for long
distances (up a high tower) at high frequencies. It's just fine for
anything you're likely to use it for. As far as I know, it doesn't degrade
with time.
On Mon, Sep 16, 2013 at 7:55 AM, Kerry Pinkerton <Pinkertonk@mchsi.com>wrote:
>
>
> You HAM radio guys might know this. What is RG 59 used for? I came home
> from the Army 40+ years ago with a full, new in the box, spool (500'???).
> Still in the box.
>
> Is it still any good?
>
>
> --
> Kerry Pinkerton
>
> North Alabama, near Huntsville,
>
> 77 Eleganza II, "The Lady", 403CI, also a 76 Eleganza being re-bodied as
> an Art Deco car hauler
> _______________________________________________
> GMCnet mailing list
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--
Robin Hood
Jackson, MS
2013 Subaru Outback "Top Flight"
1968 Pontiac Catalina "The Cheshire Cat"
1978 GMC Royale motorhome "Pinto Bean"
1977 GMC Palm Beach motorhome "Barn Queen"
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| Re: [GMCnet] RG59 coax OFF TOPIC [message #222641 is a reply to message #222637] |
Mon, 16 September 2013 08:18 |
emerystora
Messages: 4442
Registered: January 2004
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Not a Ham but I know.
RG-59 is a specific type of coaxial cable, often used for low-power video and RF signal connections. The cable has a characteristic impedance of 75 ohms. It is often used at baseband video frequencies, such as composite video. It may also be used for broadcast frequencies, but its high-frequency losses are too high to allow its use over long distances; in these applications use RG-6 or RG-11 instead.
RG-59 coaxial cable is commonly packed with consumer equipment, such as VCRs or digital cable/satellite receivers. Manufacturers tend to include only RG-59 cables because it costs less than RG-6 does. However, given the short lengths provided (usually 4–6 ft or 1.2–1.8 m), this is generally sufficient for its typical use.
I would say that it is sufficient for most home wiring use and is commonly sold in the Home Depot or Lowes type stores for that application.
Emery Stora
On Sep 16, 2013, at 7:55 AM, Kerry Pinkerton wrote:
>
>
> You HAM radio guys might know this. What is RG 59 used for? I came home from the Army 40+ years ago with a full, new in the box, spool (500'???). Still in the box.
>
> Is it still any good?
>
>
> --
> Kerry Pinkerton
>
> North Alabama, near Huntsville,
>
> 77 Eleganza II, "The Lady", 403CI, also a 76 Eleganza being re-bodied as an Art Deco car hauler
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] RG59 coax OFF TOPIC [message #222643 is a reply to message #222637] |
Mon, 16 September 2013 08:46 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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RG-59 has a characteristic impedance of approximately 72-75 Ohms. It has relatively low power handling capacity (maybe 300 Watts or so, maximum). That is the same impedance used for cable TV installations, but I believe there are newer cables that have less loss. It is also used to interconnect many types of electronic equipment.
Current amateur (and CB) equipment has been designed for 50 Ohm cable, but there are many uses for RG-59. There are many places where the mismatch between 50 and 75 Ohm cables and devices is not a critical deal, especially for short runs of the cable.
If your cable has been stored indoors in reasonable temperatures all these years, it should still be good. Some of the hams here on the list might be interested in some or all of that lot.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ~ TZE166V101966 ~ ~ ~ ~
~ ~ ~ '76 ex-Palm Beach ~ ~ ~
~~ k2gkk + hotmail dot com ~~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
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> To: gmclist@temp.gmcnet.org
> From: Pinkertonk@MCHSI.com
> Date: Mon, 16 Sep 2013 07:55:10 -0500
> Subject: [GMCnet] RG59 coax OFF TOPIC
>
>
>
> You HAM radio guys might know this. What is RG 59 used for? I came home from the Army 40+ years ago with a full, new in the box, spool (500'???). Still in the box.
>
> Is it still any good?
>
> --
> Kerry Pinkerton
>
> North Alabama, near Huntsville,
>
> 77 Eleganza II, "The Lady", 403CI, also a 76 Eleganza being re-bodied as an Art Deco car hauler
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| Re: [GMCnet] RG59 coax OFF TOPIC [message #222646 is a reply to message #222643] |
Mon, 16 September 2013 09:00 |
Don A
Messages: 895
Registered: October 2008
Location: Dallas, TX
Karma: 0
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Might also point out, twist on connectors and crimp on's are availlable at electronics stores, Radio Shacks and some Home Depots. Cut the insulation off down to the solid center wire about 3/8" back, then strip off the thin outer insulation down to the wire mesh back another 3/8" or so. Twist on a couple of connectors (kind of hard to twist) and you have a extension cable for your TV signal.
Don Adams Dallas, TX
'76 26' Glenbrook, '90 Sidekick
rebuilt by R Archer, powered by J Bounds, Koba
[IMG]http://www.gmcmhphotos.com/photos/data/6109/G2.jpg[/IMG]
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| Re: [GMCnet] RG59 coax OFF TOPIC [message #222652 is a reply to message #222641] |
Mon, 16 September 2013 09:45 |
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http://en.wikipedia.org/wiki/RG-59
-----Original Message-----
From: On Behalf Of Emery Stora
Sent: Monday, September 16, 2013 8:18 AM
Not a Ham but I know.
RG-59 is a specific type of coaxial cable, often used for low-power video
and RF signal connections. The cable has a characteristic impedance of 75
ohms. It is often used at baseband video frequencies, such as composite
video. It may also be used for broadcast frequencies, but its
high-frequency losses are too high to allow its use over long distances; in
these applications use RG-6 or RG-11 instead.
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bdub
bdub.net
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| Re: RG59 coax OFF TOPIC [message #222655 is a reply to message #222637] |
Mon, 16 September 2013 10:06 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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I believe it is also used for CB cable when twin antennas are used but not single antennas.
Roy Keen
Minden,NV
76 X Glenbrook
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| Re: RG59 coax OFF TOPIC [message #222656 is a reply to message #222637] |
Mon, 16 September 2013 10:14 |
lqqkatjon
Messages: 2324
Registered: October 2010
Location: St. Cloud, MN
Karma: 5
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kerry,
as someone who contracts installers to Telephone and Cable TV companies.
RG-59 used to be the standard for wiring homes for Cable TV.
however since I have been in this industry since 2001, the standard is pretty much a slightly thicker cable, rg-6.
We will still utilize some RG-59, when we hook up a house. however, it needs to be in good shape, and good ends installed.
there are many types of ends... some good and some bad.
but all new installs, will always be installed with RG-6. and if there is any signal problems, the old rg-59 is usually at fault, and is changed out.
in other words to utilize rg-59, in the cable TV world, it is a last resort.
I do not think it has much value.
if you need some fittings. I would be happy to trade for a tool tray.
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
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| Re: [GMCnet] RG59 coax OFF TOPIC [message #222658 is a reply to message #222637] |
Mon, 16 September 2013 10:25 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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It's 75 Ohm coaxial cable. Video distribution and most cable feeds are the main unses.
--johnny
--------------------------------------------
On Mon, 9/16/13, Kerry Pinkerton <Pinkertonk@MCHSI.com> wrote:
Subject: [GMCnet] RG59 coax OFF TOPIC
To: gmclist@temp.gmcnet.org
Date: Monday, September 16, 2013, 12:55 PM
You HAM radio guys might know this. What is RG 59 used
for? I came home from the Army 40+ years ago with a
full, new in the box, spool (500'???). Still in the
box.
Is it still any good?
--
Kerry Pinkerton
North Alabama, near Huntsville,
77 Eleganza II, "The Lady", 403CI, also a 76 Eleganza being
re-bodied as an Art Deco car hauler
_______________________________________________
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Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] RG59 coax OFF TOPIC [message #222663 is a reply to message #222655] |
Mon, 16 September 2013 10:34 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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a splitter made from it is fairly common. Takes some tees (be sure you get 75Ohm tees and connectors), some measured line lengths, and a 50Ohm load. I use them tio feed two transmitters from a single exciter in main/backup mode. Save a relay and a bunch of failures.
n.b. Your CB will work bettr with 1 109" satinless whip than it will with two something shorter with loading coils in.
--johnny
--------------------------------------------
On Mon, 9/16/13, roy@gmcnet.org <roy@gmcnet.org> wrote:
Subject: Re: [GMCnet] RG59 coax OFF TOPIC
To: gmclist@temp.gmcnet.org
Date: Monday, September 16, 2013, 3:06 PM
I believe it is also used for CB cable when twin antennas
are used but not single antennas.
--
Roy Keen
Minden,NV
76 X Glenbrook
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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] RG59 coax OFF TOPIC [message #222668 is a reply to message #222655] |
Mon, 16 September 2013 10:48 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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A specific length of RG-59 will transform the impedance of a 50 Ohm antenna up to 100 Ohms. Then two of these antenna/feedline combos can be connected together (parallel) at a "Tee" fitting and the resultant impedance is now 50 Ohms which matches the usual 50 Ohm cable and transmitters.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ~ TZE166V101966 ~ ~ ~ ~
~ ~ ~ '76 ex-Palm Beach ~ ~ ~
~~ k2gkk + hotmail dot com ~~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
______________
*[ ]~~~[][ ][|\
*--OO--[]---O-*
> To: gmclist@temp.gmcnet.org
> From: roy@gmcnet.org; keen@gmcnet.org; Minden@gmcnet.org; roynpaula@charter.net
> Date: Mon, 16 Sep 2013 10:06:49 -0500
> Subject: Re: [GMCnet] RG59 coax OFF TOPIC
>
> I believe it is also used for CB cable when twin antennas are used but not single antennas.
> --
> Roy Keen
> Minden,NV
> 76 X Glenbrook
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