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[TowerTalk] 40m add- on spikes question

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Subject: [TowerTalk] 40m add- on spikes question
From: (Joe Reisert)
Date: Fri May 23 16:41:11 2003

On the Cushcraft 40 meter add on kit, they are definitely traps tuned to 20 


Joe, W1JR

At 02:55 PM 5/19/2003 +1200, Barry Kirkwood wrote:
>I am curious about the design of the 40m add on spikes attached to the 
>driven elements of some tribanders.
>Do  they use  20m parallel traps, ie coil and capcitor , or are they 
>"Lattin traps" ie simply a loading coil which acts as an rf choke to keep 
>the 20m energy out of the spike?
>Barry Kirkwood PhD ZL1DD
>Signal Hill Homestay
>66 Cory Road
>Palm Beach
>Waiheke Island 1240
>ph/fax 64-9-372-5161
>See:  for "Self Supporting Towers", "Wireless 
>Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with 
>any questions and ask for Sherman, W2FLA.
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