开云体育

Jack,

So what BCI filter do you like best?
Can you show us a response curve that you know goes with that particular filter.
Are filters with the small axial leaded inductors suitable for in-line with the uBitx antenna,
or do you only use those for a receiver?
What kind of caps do you use (I'd think 100v NPO)?

Digging around through old posts, I found that you had recommended several different AM BCI filters:

In this one your post shows little axial leaded inductors, the article has some big toroids, no idea if it is the same filter design (in pf and uH):
? ?/g/BITX20/message/39613

This one looks like the same values as the above article, but the graph is totally different (and I have no idea what the Y axis is):
? ??/g/BITX20/message/72920

This one has the same graph as the above article, but has totally different values:
? ??/g/BITX20/message/67270

There may be others, that was just what I found in 3 or 4 minutes.

I had just recommended that last one to VU3ONX, in part because of the graph,?
and because using T50-6 toroids seemed like a good idea on a 10w uBitx.
On the other hand, those inductors should choke off most of the 3.5+MHz energy so perhaps
the smaller axial leaded guys are fine.

Jerry, KE7ER?