If I remember my structural design class properly, 6061 is the alloy, T6
is the treatment.
We mostly looked at 2024 and 7075.
On 12/21/20 1:28 AM, Gary Sitton via BVARC wrote:
Ron, this work hardens the wire and removes the normal annealing. This
can be done with most soft metals: copper, silver, brass, but not
aluminum which must heat tempered like 6061-T6.
Gary
On December 20, 2020 9:57:30 PM Rick Hiller via BVARC
<[email protected]> wrote:
Ron,
One way that I found to pre-stretch wire before putting it up is to
anneal it. Cut it to length or a bit longer. Tie one end to a fixed
point and then at the other end wrap it around a hammer handle a few
times then walk backward till the wire is tight. Then holding the
hammer to your chest, lean backward to stretch the wire...not enough
to break it but enough to stretch it and make it stay at this final
length. I built delta loops for many years out of solid copper wire
that I got surplus and did this with all of the installations and
they remained one size for a long time.
GL....rick W5RH
On Sun, Dec 20, 2020 at 3:02 PM Ron Bosch via BVARC <[email protected]
<mailto:[email protected]>> wrote:
Mark,
Assuming copper clad or copper wire, anything above 21 AWG is
fine for any freq greater than 160M from a skin effect
standpoint. After that it is all about tensile strength vs
ductility. Too ductile and it will sag. too brittle and it will
part. The first three HF antennas, including my 135' random, I
built were made from some 16 G PVC coated copper power wire I had
500' of from an outdoor power run for security cameras. They all
worked, but the wire stretches under strain, so about every month
I have to pull it tight. Eventually this will make it part. I
bought 500' of #14 stranded PVC coated wire from Palomar
Engineers because I fell in love with it after using 50' of it on
an end-fed coil loaded EmComm antenna I built. Once the outdoor
sprinkler power wire parts, I will rebuild the antennas with the
PE wire.
Ron
KE4DRF
On Sun, Dec 20, 2020 at 2:33 PM Mark Brantana via BVARC
<[email protected] <mailto:[email protected]>> wrote:
Is there some correlation for transmission power and
frequency vs wire gage required? Or is it essentially all
about structural stability?
Mark
N5PRD
On Dec 15, 2020, at 12:11 PM, john Parmalee via BVARC
<[email protected] <mailto:[email protected]>> wrote:
Consider #17 electric fence wire. Take two or three
strands and twist them together with one end clampied in a
vice or something and the other end in the chuck of a hand
drill. it will shrink so oversize.
It is chap,Find it at Tractor Supply or on line.
John Parmalee
[email protected] <mailto:[email protected]>
281-380-3811
K5VGM WI2XLJ
In a message dated 12/14/2020 8:37:10 PM Central Standard
Time, [email protected] <mailto:[email protected]> writes:
This is link to wire I got and I am VERY impressed with
these guys for help. It is stranded and insulated.
https://palomar-engineers.com/tech-support/tech-topics/ferrite-tutorials/search?keyword=antenna%20wire
<https://palomar-engineers.com/tech-support/tech-topics/ferrite-tutorials/search?keyword=antenna%20wire>
*From:* BVARC <[email protected]
<mailto:[email protected]>> *On Behalf Of *Rick
Hiller via BVARC
*Sent:* Monday, December 14, 2020 8:13 PM
*To:* BRAZOS VALLEY AMATEUR RADIO CLUB <[email protected]
<mailto:[email protected]>>
*Cc:* Rick Hiller <[email protected]
<mailto:[email protected]>>; Mark Janzer
<[email protected] <mailto:[email protected]>>; KJ Anderson
<[email protected] <mailto:[email protected]>>
*Subject:* Re: [BVARC] Antenna wire?
I’d lean toward insulated. Keeps inter-strand noise at
a minimum. 135 feet—- 14 awg stranded at min. Alpha
Delta uses 14 solid for their fan dipoles. So either
way works, depending on how it is deployed.
Wireman, DX Eng and others.
GL. Rick. RH
Sent from my i-Thingamajig
On Dec 14, 2020, at 7:31 PM, Mark Janzer via BVARC
<[email protected] <mailto:[email protected]>> wrote:
Check out:
https://thewireman.com/product-category/antenna-materials/antenna-wire/
<https://thewireman.com/product-category/antenna-materials/antenna-wire/>
Flex weave is nice.
On Dec 14, 2020, at 4:31 PM, KJ Anderson via
BVARC <[email protected] <mailto:[email protected]>>
wrote:
I need input. I want to build an additional 40M
EFHW, I’m wondering if the group has input or
guidance on the best kind of wire to use for the
long wire? It appears that the antenna
manufacturers are happy to sell me “high-grade
antenna wire” that is nothing more than regular
14AWG wire I could get literally anywhere for
much less; my question is- has anyone tried
anything more exotic? Is there a flavor of wire
that works better/worse for antennas?
I appreciate you all.
~~~~~~~~~~~~~~~~~~~~~~
73 de KJ5EMP
[email protected] <mailto:[email protected]>
KJ in Cypress
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*/e-mail: [email protected] <mailto:[email protected]>/*
*/Cell: 832-474-3713/*
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*/ Houston, TX 77036/*
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ARS KA8KPN
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