Yeah, 7075 is expensive stuff.
Gary
On December 22, 2020 7:59:42 PM Jonathan Guthrie via BVARC
<[email protected]> wrote:
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]> 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]>
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]> 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]
281-380-3811
K5VGM WI2XLJ
In a message dated 12/14/2020 8:37:10 PM Central Standard Time,
[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
From: BVARC <[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]>
Cc: Rick Hiller <[email protected]>; Mark Janzer <[email protected]>; KJ
Anderson <[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]> wrote:
Check out:
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]> 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]
KJ in Cypress
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--
Rick Hiller
e-mail: [email protected]
Cell: 832-474-3713
Physical: 9031 Troulon Drive
Houston, TX 77036
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-- Jonathan Guthrie
ARS KA8KPN
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