At 12:17 30-03-07, Marijan Miletic', S56A wrote:
>Zack, I learnt filters theory in 1960's and I know that 7 pole ones
>(Dunestar) are better than tapped 6 poles (W3NQN).
Mario --
This may be part of your misunderstanding about the Dunestar and W3NQN filters.
The Dunestar filters are NOT 7-pole but rather 3-pole designs.
This info is taken from the Dunestar website.
http://www.dunestar.com/model300.htm
CONSTRUCTION: The filters are 3-pole, top-C coupled.
Hi-Q capacitors and inductors are used for tuned circuits.
73 -- John W0UN
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