[CQ-Contest] Bandpass filter

Joe nss at mwt.net
Wed Jul 4 08:43:06 PDT 2012

Kinda like a transformer,,

The Original Rolling Ball Clock
Idle Tyme
On 7/4/2012 8:39 AM, Tom W8JI wrote:
>> The specific coupling is going to vary with a ton of factors.  But I am
>> sure the C31 is going to be a pretty rough case.  5B4AGN measured coupling
>> between the separate feed configurations and found -12db from 15 driven to
>> 20 receive.  Other combos had greater losses.
> Undesired power levels are **generally** worse from a higher frequency
> element to a lower frequency element, rather than the other way around. The
> wider the spread the greater the difference. My 15M puts 15M energy to my
> 40's much better than the 40M puts 40M energy into the 15M.
> 73 Tom
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