Paul,
I think you started off speaking about crystal oscillators, but you just
mentioned a sweep generator. Can you tell us a little more about your
application??

Joe
W3JDR

"Paul Burridge" wrote in message
...
On Tue, 24 Feb 2004 12:30:12 -0700, Jim Thompson
wrote:

Aha! I just noted from Paul's post that "my" oscillator is called a
two-transistor Butler. Wonder when that was conceived? I've been
using the my direct-coupled version for 40 years.

Interesting. This is the type I've decided to build as the basis for
my next sweep generator attempt, since it's claimed the config is more
amenable to being pulled than most others (although I won't be
attempting to pull it anything like as much as my first abortive
attempt using a Cmos-based inverter). Do you find it's a reliable and
stable design, Jim? I assume if it wasn't you wouldn't still be using
it!
--

The BBC: Licensed at public expense to spread lies.

On Wed, 25 Feb 2004 12:39:46 GMT, "W3JDR" wrote:

Paul,
I think you started off speaking about crystal oscillators, but you just
mentioned a sweep generator. Can you tell us a little more about your
application??

Certainly. I've just finished roughing out the block diagram, actually
and will try to post it later for some constructive criticism. It's
basically just to sweep a half-meg segment in the 40Mhz band for the
purpose of testing filters to improve rx selectivity in R/C
applications..
--

The BBC: Licensed at public expense to spread lies.

Paul,
You might want to check out what I built to do that sort of job with great
precision:
http://mysite.verizon.net/jdrocci/

Joe
W3JDR


"Paul Burridge" wrote in message
...
On Wed, 25 Feb 2004 12:39:46 GMT, "W3JDR" wrote:

Paul,
I think you started off speaking about crystal oscillators, but you just
mentioned a sweep generator. Can you tell us a little more about your
application??

Certainly. I've just finished roughing out the block diagram, actually
and will try to post it later for some constructive criticism. It's
basically just to sweep a half-meg segment in the 40Mhz band for the
purpose of testing filters to improve rx selectivity in R/C
applications..
--

The BBC: Licensed at public expense to spread lies.

Paul,
You might want to check out what I built to do that sort of job with great
precision:
http://mysite.verizon.net/jdrocci/

Joe
W3JDR


"Paul Burridge" wrote in message
...
On Wed, 25 Feb 2004 12:39:46 GMT, "W3JDR" wrote:

Paul,
I think you started off speaking about crystal oscillators, but you just
mentioned a sweep generator. Can you tell us a little more about your
application??

Certainly. I've just finished roughing out the block diagram, actually
and will try to post it later for some constructive criticism. It's
basically just to sweep a half-meg segment in the 40Mhz band for the
purpose of testing filters to improve rx selectivity in R/C
applications..
--

The BBC: Licensed at public expense to spread lies.

On Wed, 25 Feb 2004 12:39:46 GMT, "W3JDR" wrote:

Paul,
I think you started off speaking about crystal oscillators, but you just
mentioned a sweep generator. Can you tell us a little more about your
application??

Certainly. I've just finished roughing out the block diagram, actually
and will try to post it later for some constructive criticism. It's
basically just to sweep a half-meg segment in the 40Mhz band for the
purpose of testing filters to improve rx selectivity in R/C
applications..
--

The BBC: Licensed at public expense to spread lies.