[Milsurplus] Antenna wire

[mstangelo at comcast.net]

I don't know but the insulation helps in minimize stretch. My longest wire at antenna at home is an 80 meter dipole. When I constructed and installed it I measured the SWR and Impedance parameters with a VNA.  I measure parameters it after storms and every spring and it hasn't changed; I believe most of the stretch is in the initial installation.

My wires used for portable operation are not under much stress.

My first antenna was solid copperweld after the first winter it had oxidized and had rust marks. Never used phospher bronze but I stay with insulated wire.

Mike N2MS

 
> On 09/30/2023 10:30 AM EDT Glenn Little WB4UIV <glennmaillist at bellsouth.net> wrote:
> 
> 
> How much does the soft drawn stranded copper stretch?
>  When you put tension on stranded wire it will stretch as the strands tighten up.
>  Soft drawn copper stretches due to its makeup.
>  The reason the phosphor bronze is used is it does not stretch.
>  I guess soft drawn copper could work for portable antennas if its length is checked periodically.
>  
>  Soft drawn copper is definitely easier to work with.
>  
>  73
>  Glenn
>  WB4UIV