[TowerTalk] Fwd: (80 Meter yagi question) Cu <=> Ag

[Bob K6UJ]

Since rf flows on the skin of the tube, I don't understand why silver plated copper 
wouldn't be better than just copper.But what do I know, hihi
BobK6UJ
      From: Hans Hammarquist via TowerTalk <towertalk at contesting.com>
 To: towertalk at contesting.com 
 Sent: Thursday, October 12, 2017 1:26 PM
 Subject: [TowerTalk] Fwd: (80 Meter yagi question) Cu <=> Ag
   

 I saw somewhere that, unless you have solid, not electro-plated, silver you gain nothing plating silver on copper. Electroplated silver have lower conductivity than OFHC copper.


Looks like polished copper is the way to go. I like the durability of Al though. Is polished and varnished copper the best?



Go figure,


Hans - N2JFS

 

 

-----Original Message-----
From: Jim Thomson <jim.thom at telus.net>
To: towertalk <towertalk at contesting.com>
Sent: Thu, 12 Oct 2017 15:29
Subject: [TowerTalk] 80 Meter yagi question


##I did notice that stuff like  RG-303  with its silver plating, which is over the copper bonding..which is over the steel core..... on software, 
appears to flat line about 9.2 mhz and below... power wise.  My guess is, the  skin depth is deep enough such that the current is now into the steel core. 
RG-400  doesnt have that issue,  nor does RG-142.  RG-304 also has a steel core..same issues. 

##  But what the heck do I know,.. I just experiment.  Besides,  copper tuning is cheap at any home depot or supply house.  Then I silver plate it
with the cool-amp goop...just so it looks nice.  Bare copper drives me nuts, I lose sleep over it, looks un finished to me. 

Later.... Jim  VE7RF  

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