[TowerTalk] Old Force 12 C3-SS info needed

[Stan Stockton]

Eric,

I think at minimum I would replace whatever you are using for a balun with something new and up to date from an engineering standpoint.  There aren’t any 20 year old balun designs, whether a coil of coax or something using ferrite,  you would want to use on a new antenna going up today.  

JK antennas has taken this antenna design and made changes to improve the performance using computer modeling which is better than whatever method was used to design the original antenna.  There would be no question in my mind about which design would provide better results, particularly SWR curves.  I would find out exactly what modifications are needed to duplicate the JK antenna design.

Here is what you should expect with those changes.

https://jkantennas.com/c3s-jk.html

73… Stan, K5GO (ZF9CW)

> On Sep 22, 2021, at 6:54 PM, Eric Rosenberg <ericrosenberg.dc at gmail.com> wrote:
> 
> The element and boom to mast clamps on my 20 year old Force 12 C3-SS are very rusty and need to be replaced.
> 
> Nowhere in the construction/instruction manual do I see where size size is specified.
> 
> Does anyone have that information?
> 
> For that matter, if anyone has suggestions on what mods/fixes I should make on this antenna, which hasn't been touched since I put it up a long time ago, please pass them along.
> 
> Thanks & 73,
> 
> Eric W3DQ
> Washington, DC
> _______________________________________________
> 
> 
> 
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk