[OFARC] Filter project
Ralph
ke5hdf at sbcglobal.net
Sat Aug 5 16:29:50 EDT 2017
so far I have received 4 replies to my "survey" about doing the band
pass filter project
Add me to that list and we have 5 votes ...
Of those:
3 wanted to build filters for themselves
1 only wanted to build a set for the club
4 wanted to learn more about filters (but only 2 admitted it)
of the 4 wanting to build filters:
1 mentioned 20m as primary and 40m as secondary
1 stated 40m as primary and 20m as secondary
1 stated 40m as primary and 80m as secondary
1 stated no preference (the club normally uses a 20m and 40m
filter at field day, but could use others as well)
Since we are currently in a low of the current solar cycle (and it will
continue for 2-3 more years), 20M. 40M, and 80m filters would be the
most useful for now.
The only parts we need to order are the capacitors.
A preliminary check of parts at www.mouser.com for the 20m and 40m
filters, _for each filter_ ....capacitors will run $10-20 (plus
shipping), with other parts about $15 ....so approximately $40 after
shipping.
I will confirm part numbers and cost for all the filters and provide a
tighter estimate as soon as I can.
At the next club meeting, we can discuss how to proceed with the project
....
explain filter function and design at a meeting
show & tell some filters at a club meeting, describe how to construct
?????? club order and build OR each person order and build, then
we test them all at a club meeting?????
Ralph KE5HDF
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