Where to buy coax cable
 

I need to purchase some good coax cable and some connectors.
Can someone suggest the best place to get these items from?
I am open to any and all suggestions.
TIA

Walt

--
Posted via a free Usenet account from http://www.teranews.com

Where to buy coax cable
 

"Walt" wrote in message
.. .
I need to purchase some good coax cable and some connectors.
Can someone suggest the best place to get these items from?
I am open to any and all suggestions.
TIA

Walt

What type of coax and what is it going to be used for ?

Here is where I got 500 feet from a while back. Bury-flex. It might be
overkill for some applications, but I was using most of it on 50 mhz and up.

http://www.davisrf.com/ham1/coax.htm

Another place is :

http://thewireman.com/index.shtml

I usually pick up coax from him at the hamfests.

Where to buy coax cable
 

Ralph Mowery wrote:


"Walt" wrote in message
.. .
I need to purchase some good coax cable and some connectors.
Can someone suggest the best place to get these items from?
I am open to any and all suggestions.
TIA

Walt

What type of coax and what is it going to be used for ?

I will be running high power to a couple of phased verticals.
Don't need to be buried I guess.


Here is where I got 500 feet from a while back. Bury-flex. It might be
overkill for some applications, but I was using most of it on 50 mhz and
up.

http://www.davisrf.com/ham1/coax.htm

Another place is :

http://thewireman.com/index.shtml

I usually pick up coax from him at the hamfests.

--
Only a FOOL would believe in the FOLLY of Global Warming
Al Gore's movie IS an opinion (or more accurately a political device), and
there's very little 'scientific evidence' in it.
http://www.nytimes.com/2008/01/06/us...DH52pB43B/S+vg
http://www.boston.com/bostonglobe/ed...al_warming_go/
http://www.bloomberg.com/apps/news?p...Gr8&refer=muse
http://www.newstatesman.com/200712190004
http://www.msnbc.msn.com/id/19619301/
http://www.dailymail.co.uk/pages/liv...page_id=181 1
http://www.telegraph.co.uk/earth/mai...climate104.xml

Where to buy coax cable
 

I highly recommend The Wireman, http://thewireman.com.

Roy Lewallen, W7EL

Walt wrote:
I need to purchase some good coax cable and some connectors.
Can someone suggest the best place to get these items from?
I am open to any and all suggestions.
TIA

Walt

Where to buy coax cable
 

Try :
http://www.air802.com/product.php?pr...cat=433&page=1

This is LMR-400 equivalent and is cheaper.

Good folks and quick delivery.
73
-Bob
AD7OT

Where to buy coax cable
 

"hayseed" wrote in message
m...
Try :
http://www.air802.com/product.php?pr...cat=433&page=1

This is LMR-400 equivalent and is cheaper.

Good folks and quick delivery.
73
-Bob
AD7OT

While it is probably not an issue for many, this and the lmr-400 has a
center conductor that is aluminum covered in copper. I just like the 100%
copper for the center conductor.

I don' t think the origional post was about a rotator on a tower, but the
stranded seems to be the perferred coax for that. I did have some of the
origional 9913 up with a rotator for about 10 years before I moved. It
seemed ok, but I like the stranded center conductor and fully filled center
dialectric.

For anything below 30 mhz and low power the rg-8x is ok. I am running some
on 40 and 80 meters but with only 700 watts. This is just about the max for
that coax , especially if sstv or rtty is being used .

A good grade of any of the rg-8 size has low enough loss below 30 mhz and
the weather proffing is more of the issue.

Where to buy coax cable
 

Ralph Mowery wrote:
While it is probably not an issue for many, this and the lmr-400 has a
center conductor that is aluminum covered in copper.

How do they avoid the dissimilar metal problem? If I
need to connect copper to aluminum, can I use that
center conductor with copper on one end and copper
scraped off the other end to avoid the dissimilar
metal problems?
--
73, Cecil http://www.w5dxp.com

Where to buy coax cable
 

Walt wrote:

I need to purchase some good coax cable and some connectors.
Can someone suggest the best place to get these items from?
I am open to any and all suggestions.
TIA

Walt

www.thewireman.com

its the best place on the net at relatively good prices.

--
Sometimes, you just gotta come right out and say whats on your mind and be
damned those who would ridicule you for it!

Where to buy coax cable
 

"Ralph Mowery" wrote in
:

http://www.davisrf.com/ham1/coax.htm

Greg's notes on Buryflex at http://www.seed-solutions.com/gregordy/Amateur%
20Radio/Experimentation/buryflex.htm are also interesting.

Owen

Where to buy coax cable
 

In article ,
Cecil Moore wrote:

How do they avoid the dissimilar metal problem? If I
need to connect copper to aluminum, can I use that
center conductor with copper on one end and copper
scraped off the other end to avoid the dissimilar
metal problems?

My understanding is that the copper/aluminum issue is only a problem
in the presence of oxygen and an electrolyte. A bond between the
metals, which excludes these factors doesn't have galvanic corrosion
problems. There's apparently a high-pressure crimping system which
creates a cold weld between aluminum and copper wire which is
considered permanent and corrosion-free. I suspect that for LMR-400
and similar cables, the copper layer is deposited on the aluminum via
electrolysis.

LMR-400 is usually terminated to an N connector, using a pressure
crimper to attach the center pin... soldering is also used sometimes.
The recommended connectors come with heat-shrink tubing to seal the
coax-to-connnector junction. When properly assembled, these
connectors are moistureproof. The copper/aluminum junctions should
thus be well sealed away from anything which would cause them to
corrode.

LMR-400 does have another characteristic which some people feel make
it unsuitable for certain applications - its foil-and-braid shield.
It's nigh-on impossible to guarantee a good electrical bond to the
foil itself, since it's aluminum and cannot be soldered easily... you
have to depend on the pressure of the crimp, and on contact between
the foil and the braid. People who build repeaters seem to consider
this construction prone to become noisy over time.. Allegedly,
current flow between the braid and shield can create micro-arcing and
increases the transmitter's broadband-noise output, especially if the
cable is moving e.g. due to wind hitting the tower. This can
apparently result in enough broadband noise at the repeater's input
frequency to cause desense problems or scratching sounds when the
cable moves.

This doesn't seem to be a significant issue for simplex applications,
though.

--
Dave Platt AE6EO
Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!

Where to buy coax cable
 

Owen Duffy wrote:
"Ralph Mowery" wrote in
:

http://www.davisrf.com/ham1/coax.htm

Greg's notes on Buryflex at http://www.seed-solutions.com/gregordy/Amateur%
20Radio/Experimentation/buryflex.htm are also interesting.

I have a 100 foot piece of Davis Bury-Flex I bought new and measured on
a network analyzer. At around 200 MHz and above, it acts very strangely.
The loss is 3 or more dB/100 feet above its spec. But if I take its
natural two foot or so diameter coil and flex it a bit, the attenuation
increases another couple of dB and stays there. When I check again some
days later, I find that it's returned to its lower but still way out of
spec value. It seems to be ok for HF, but I sure wouldn't use it above 2
meters. The genuine LMR400 I have is within its spec and doesn't exhibit
this strange behavior when flexing.

Roy Lewallen, W7EL

Where to buy coax cable
 

"Roy Lewallen" wrote in message
...
Owen Duffy wrote:
"Ralph Mowery" wrote in
:
http://www.davisrf.com/ham1/coax.htm

Greg's notes on Buryflex at
http://www.seed-solutions.com/gregordy/Amateur%
20Radio/Experimentation/buryflex.htm are also interesting.

I have a 100 foot piece of Davis Bury-Flex I bought new and measured on a
network analyzer. At around 200 MHz and above, it acts very strangely. The
loss is 3 or more dB/100 feet above its spec. But if I take its natural
two foot or so diameter coil and flex it a bit, the attenuation increases
another couple of dB and stays there. When I check again some days later,
I find that it's returned to its lower but still way out of spec value. It
seems to be ok for HF, but I sure wouldn't use it above 2 meters. The
genuine LMR400 I have is within its spec and doesn't exhibit this strange
behavior when flexing.

Roy Lewallen, W7EL

That is interisting. I bought 500 feet and cut it into 4 lengths from about
120 to 140 feet each. They were then rolled into coils about 2 or 3 feet in
diameter. Two of them had pl 259 plugs on them and the other two had N
connectors installed. I did not use any high teck equipment, just about 100
watts at 440 mhz, a bird wattmeter, and a good dummy load. The losses in
each piece was within the specificiations of the coax. The same meter was
moved from one end to the other to see how much power was lost.
This was done mainly to see if the connectors were installed correctly as
it would have been difficult to change it out after the antennas were
installed.
It has been up almost a year. Wish I could pull it down and recheck it to
see if it was acting up.

Where to buy coax cable
 

On Jan 27, 12:40 pm, "Walt" wrote:
I need to purchase some good coax cable and some connectors.
Can someone suggest the best place to get these items from?
I am open to any and all suggestions.
TIA

I heartily agree with Roy and Eric. The Wireman is as good as coax
suppliers get. Followed very closely by Davis RF.

Walt

Brian w3rv

Where to buy coax cable
 

Have been buying for many years and have always used "The Wireman"
http://thewireman.com/index.shtml
Fair prices, fast shipping. If something is not on hand they let you know.
Not connected in any way with them, just a satisfied customer.

K7SAM