[TowerTalk] 80M antenna wire size

[jimlux]

On 1/3/20 5:05 PM, David Gilbert wrote:
> 
> I did the EZNEC model again using perfect ground.  The ground losses 
> were indeed a couple of dB lower in every case, but if anything the 
> differential between the various versions (#18 copper versus #20 copper 
> versus #18 Copperweld) became narrower and therefore even less 
> consequential.
> 
> And as you say, EZNEC tries to account for skin depth anyway ... which 
> by the way is of course less at 80m (N2TK's situation) than 160m. 

at 4MHz in copper, 1.3 mils (goes as sqrt(f)),


  The
> Copperweld spec sheet says that there is about 4 mils of copper on #18 
> Copperweld wire.

3 skin depths, 95% of the current is in the copper.