Topband: BCB High Pass Filter

Eric NO3M no3m at
Thu Mar 3 13:54:07 EST 2016

Concur; the plug-in filters at the bottom right of the signal 
conditioner photo I sent earlier are homebrew BPFs based on W3NQN design 
criteria.  Ed published a two (2) part article in May / June 1998 QST 
that discusses the design background (available in ARRL QST archives).

The ones I built are on smaller cores than those cited in the article 
and likely those Jay sells, so windings were modified accordingly using 
W3NQN's design guidelines (and some correspondence).  Nonetheless, they 
work excellent.

73 Eric NO3M

On 03/03/2016 01:24 PM, Jim Brown wrote:
> On Thu,3/3/2016 10:12 AM, Jay Terleski wrote:
>> We sell allot of them.
>> Jay, WX0B
> The W3NQN-designed filters that Jay sells are excellent.
> 73, Jim K9YC

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