On Sat, 7 Mar 2009 11:29:05 -0800 (PST), Roger Parsons wrote:
>Just to advise the group that a couple of other stations have had
>success with this filter. Nick, VE3FJ, also checked out its
>frequency response with the following results:
>1.85MHz -26dB
>3.65MHz -46dB
>7.24MHz -68dB
>14.13MHz -60dB
>21.0MHz -56dB
>28.5MHz -54dB
>Of course in theory the stop band attenuation should continue to
>increase with frequency, but in practice there will be strays
>across the filter that will cause a performance drop at higher
>frequencies.
Roger,
Exactly how was the response measured? What source and load
impedances?
73,
Jim K9YC
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