ON5MJ wrote:

Thank you again all OM for your interesting replies.

This one from Ken could be worth the effort of investigation. I also thank
Bob who replied me personnally.

Did somebody try to replace a roller coil by a serie made of a tapped coil
and a variable capacitor ?

73 de Jacques - ON5MJ


You could do that, but again, if you have enough other adjustments you
can probably make the fine adjustments on the caps.

My first antenna tuner, which I used for several months, was just an
L-network with a tapped coil (with an alligator clip) and a variable
cap. By reversing the direction of the thing and dinking around it
always worked for me -- and since it was on an open piece of aluminum I
could hear, smell and see when I was putting too much RF into it for the
little broadcast tuning cap!

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

......and now I understand your approach to DSP

"Tim Wescott" wrote in message
...
My first antenna tuner, which I used for several months, was just an
L-network with a tapped coil (with an alligator clip) and a variable
cap. By reversing the direction of the thing and dinking around it
always worked for me -- and since it was on an open piece of aluminum I
could hear, smell and see when I was putting too much RF into it for the
little broadcast tuning cap!

Airy R. Bean wrote:

.....and now I understand your approach to DSP

"Tim Wescott" wrote in message
...

My first antenna tuner, which I used for several months, was just an
L-network with a tapped coil (with an alligator clip) and a variable
cap. By reversing the direction of the thing and dinking around it
always worked for me -- and since it was on an open piece of aluminum I
could hear, smell and see when I was putting too much RF into it for the
little broadcast tuning cap!



Why thank you. That's very nice.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

I can assure you that it is not. However, if it makes you feel
better then please deceive yourself on that matter as you undoubtedly
do upon the religious beliefs of DSP.

"Tim Wescott" wrote in message
...
Airy R. Bean wrote:
.....and now I understand your approach to DSP
"Tim Wescott" wrote in message
...
My first antenna tuner, which I used for several months, was just an
L-network with a tapped coil (with an alligator clip) and a variable
cap. By reversing the direction of the thing and dinking around it
always worked for me -- and since it was on an open piece of aluminum I
could hear, smell and see when I was putting too much RF into it for the
little broadcast tuning cap!
Why thank you. That's very nice.

Airy R. Bean wrote:

I can assure you that it is not. However, if it makes you feel
better then please deceive yourself on that matter as you undoubtedly
do upon the religious beliefs of DSP.

I will! Particularly since when _I_ build a system with DSP it
generally works exactly as I've predicted it will. If I'm deceived,
then so is God -- are you saying that God is deceived by how DSP works?

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Who is God?

"Generally" works "exactly"? You seem to be somewhat confused.

"Tim Wescott" wrote in message
...
Airy R. Bean wrote:
I can assure you that it is not. However, if it makes you feel
better then please deceive yourself on that matter as you undoubtedly
do upon the religious beliefs of DSP.
I will! Particularly since when _I_ build a system with DSP it
generally works exactly as I've predicted it will. If I'm deceived,
then so is God -- are you saying that God is deceived by how DSP works?