[TowerTalk] Feedline (choke) question

Wes Stewart n7ws at yahoo.com
Tue Sep 30 18:45:55 EDT 2025


 Ok.  So this happens anytime you have an open ended coax.
Wes  N7WS
    On Tuesday, September 30, 2025 at 02:29:58 PM MST, Jack Brindle <jackbrindle at me.com> wrote:  
 
 No. All connectors that connect the inner and outer edges of the shield. Purely from skin effect.
73,Jack, W6FB


On Sep 30, 2025, at 4:22 PM, Wes Stewart <n7ws at yahoo.com> wrote:
 I'm trying to understand the mechanism for this. Are you suggesting that this is unique to UHF connectors due to the serrations? 
Wes  N7WS

    On Tuesday, September 30, 2025 at 01:52:55 PM MST, Jack Brindle via TowerTalk <towertalk at contesting.com> wrote:  
 
 The problem is in the way you connect it. If you use a PL-259, then you mix the outer and inner currents at the connector, thus “polluting” the signal going into the radio. But then the same thing will happen if you add a choke with connectors.

  

  


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