Topband: BCB Filter (related to Antenna Analyzer question)

[Art]

As I said weeks earlier in this thread..my Par BCB filter works great. 
My BCB attenuation measurements are per his specs on my swept SA. The BC 
band falls off a cliff below 1800. Is it perfect? Of course not. Its a 
LC filter. Like Bill says, you have special needs? Call Dale.

73 Art

Bill Tippett wrote:
> On Wed, Oct 14, 2009 at 2:47 PM, Rick Karlquist <richard at karlquist.com>wrote:
>
>   
>> Bill Tippett wrote:
>>     
>>> VE9AA:
>>>
>>>       
>>>>          Consider a Par Electronics BCB filter, IMHO much better than
>>>>         
>>> the ICE 402:
>>>
>>> http://parelectronics.com/bcst-hpf.htm
>>>
>>>       
>> This has the same problem as the ICE filter.  An impressive
>> looking measured curve, but no guaranteed specs.  Having built
>> many filters, I can tell you that repeatability is a huge
>> issue in the case of a 160 BCB filter, now that you have to
>> reject 1700 (I have a local station there :-(.  You can always
>> tweak one by hand tuning to look very good.  How do I know
>> the one I purchase is going to look so good?
>>
>>     
>
> Contact the owner Dale Parfitt W4OP.  Dale can tweak the #3 null in the
> response shown to exactly reject 1700 kHz.  Poke around on his website...it
> might give you a little more confidence he knows what he's doing.  I believe
> he's very QRL with military contracts at the moment but he's generally
> responsive to emails.
>
> 73,  Bill  W4ZV
> _______________________________________________
> Topband mailing list
> Topband at contesting.com
> http://lists.contesting.com/mailman/listinfo/topband
>
>