[TowerTalk] 40m add- on spikes question

[Barry Kirkwood]

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?
73
Barry
  

end
Barry Kirkwood PhD ZL1DD
Signal Hill Homestay
66 Cory Road
Palm Beach
Waiheke Island 1240
NEW ZEALAND
ph/fax 64-9-372-5161
www.waiheke.co.nz/signal.htm