[TowerTalk] feedpoint choke for inv L

[Jim Brown]

Yes. I'm just finishing a major project to update my recommendations for 
chokes. Go with 18 turns of RG400 on a 2.4-in #31 core. That should 
provide around 10K ohms of resistive choking Z on 160M. It will NOT be 
good on any other band.

Be careful to wind the turns sequentially. If you wind very carefully, 
17 turns will fit on the first layer. The additional turn should overlay 
the start of the winding.

18 turns of a pair of #12 Teflon provides slightly lower choking Z. Only 
15 turns will fit on the first layer.

73, Jim K9YC

On 11/17/2018 6:40 PM, Jamie WW3S wrote:
> I have an Inv L for 160, currently fed with a bulkhead SO-239 attached to a radial plate.....is there some sort of Balun/feedpoint choke that may work better?