Hi Chris,
Thanks for your comment. When the filter is part of the new BITX80/20
I will have to match the filter in the trcvr again. With you I wonder
how it will be, special because the filter is used in two directions.
I will drop the pictures by that time in the group.
73
Ruud.
PE2BS
--- In BITX20@..., "vdberghak" <vdberghak@z...> wrote:
Very nice shape, nice experiment too.
Like to mentioned, matching is important. I wonder how the shape
looks
when it is part of the BITX but I am sure you will add it.
Chris.
--- In BITX20@..., "Ruud Jongeling" <pe2bs@t...> wrote:
Hi fellow BITX-ers,
About one or two months ago I promised to report of my ladder
filter
experiment on 9MHz. I just dropped the files with shape-pictures
in
the
Files box. See the folder "Ladder Crystal Filter Design".
There is also an Excel file that can be used for your own
experiments.
To give you a short summary: it can be done but without measuring
the
shape it is a bit of lotery, like Max said in earlier messages.
73
Ruud
PE2BS
