Depending on whether the circuit is designed for overtone oscillation or
harmonic generation, how perfect the overtone crystals are, and how the
circuit is tuned, I'd expect either:
1) No oscillation
2) Very close to 100.1 MHz
3) Very close to 100.3 MHz

What did you experience?

Joe
W3JDR


"Asimov" wrote in message
...
"John Fields" bravely wrote to "All" (28 Feb 05 14:34:30)
--- on the heady topic of " Using non-overtone crystal in overtone
mode?"

JF From: John Fields
JF sci.electronics.components:12029 rec.radio.amateur.homebrew:8635

JF Check out "Chladni patterns" if you're interested.

I've done some putzing with crystals. What frequency say would a
100.3MHz xtal in series with a 100.1Mhz xtal settle on? 100.2Hz?

A*s*i*m*o*v

... It's kind of fun to do the impossible... -Walt Disney

"W3JDR" bravely wrote to "All" (01 Mar 05 10:34:17)
--- on the heady topic of " Using non-overtone crystal in overtone mode?"

It did oscillate. I was some really oddball frequency inbetween but as
I recall it was neither the mean nor any other obvious relation. I
suppose it was where their response curves complimented but I'm not
sure. Did it only for curiosity's sake to see if it they could be used
for filtering but tried making them oscillate for fun. I know, simple
pleasures... ;-)

A*s*i*m*o*v


W3 Reply-To: "W3JDR"
W3 Xref: aeinews rec.radio.amateur.homebrew:8665

W3 Depending on whether the circuit is designed for overtone oscillation
W3 or harmonic generation, how perfect the overtone crystals are, and how
W3 the circuit is tuned, I'd expect either:
W3 1) No oscillation
W3 2) Very close to 100.1 MHz
W3 3) Very close to 100.3 MHz

W3 What did you experience?

W3 Joe
W3 W3JDR


W3 "Asimov" wrote in
W3 message ...
"John Fields" bravely wrote to "All" (28 Feb 05 14:34:30)
--- on the heady topic of " Using non-overtone crystal in overtone
mode?"

JF From: John Fields
JF sci.electronics.components:12029 rec.radio.amateur.homebrew:8635

JF Check out "Chladni patterns" if you're interested.

I've done some putzing with crystals. What frequency say would a
100.3MHz xtal in series with a 100.1Mhz xtal settle on? 100.2Hz?


.... All things are possible. Except skiing through a revolving door.

Was it crystal-locked, or free-running....did it change frequency when you
tuned the circuit? If it wasn't crystal locked, then the experiment wasn't
too meaningful

Joe
W3JDR

"Asimov" wrote in message
...
"W3JDR" bravely wrote to "All" (01 Mar 05 10:34:17)
--- on the heady topic of " Using non-overtone crystal in overtone
mode?"

It did oscillate. I was some really oddball frequency inbetween but as
I recall it was neither the mean nor any other obvious relation. I
suppose it was where their response curves complimented but I'm not
sure. Did it only for curiosity's sake to see if it they could be used
for filtering but tried making them oscillate for fun. I know, simple
pleasures... ;-)

A*s*i*m*o*v


W3 Reply-To: "W3JDR"
W3 Xref: aeinews rec.radio.amateur.homebrew:8665

W3 Depending on whether the circuit is designed for overtone oscillation
W3 or harmonic generation, how perfect the overtone crystals are, and
how
W3 the circuit is tuned, I'd expect either:
W3 1) No oscillation
W3 2) Very close to 100.1 MHz
W3 3) Very close to 100.3 MHz

W3 What did you experience?

W3 Joe
W3 W3JDR


W3 "Asimov" wrote in
W3 message ...
"John Fields" bravely wrote to "All" (28 Feb 05 14:34:30)
--- on the heady topic of " Using non-overtone crystal in overtone
mode?"

JF From: John Fields
JF sci.electronics.components:12029 rec.radio.amateur.homebrew:8635

JF Check out "Chladni patterns" if you're interested.

I've done some putzing with crystals. What frequency say would a
100.3MHz xtal in series with a 100.1Mhz xtal settle on? 100.2Hz?


... All things are possible. Except skiing through a revolving door.