[time-nuts] 5 x 2 x 3 = 30 MHz
KA2WEU at aol.com
KA2WEU at aol.com
Sat Jul 18 05:52:37 EDT 2015
Good morning,
the AT Cut is inherently noisier then the SC cut but the SC has some
spurious resonances modes. Measurements below 1 Hz are very tricky as the
oscillator must be (more or less) insulated from hum, infrared (heater) . Here I
am still struggling .
Ulrich N1UL
In a message dated 7/17/2015 9:59:55 P.M. Eastern Daylight Time,
n1hac at dartmouth.edu writes:
He doesn't mention that that crystal is used in New Horizons:
http://www.bliley.com/products/crystals-precision-standard/vacuum-sealed/
Nice. I have a similar crystal from Valpey-Fischer, 5 MHz 5th overtone
AT-cut (as opposed to your 3rd overtone SC-cut). I would be interested
in what you would use for an oscillator circuit.
David N1HAC
On 7/17/15 4:27 PM, paul swed wrote:
> Ulrich,
> Nice picture. What are you doing with the crystal? I have several older
> crystals that are nice but have never done anything with them.
> Regards
> Paul
> WB8TSL
>
> On Thu, Jul 16, 2015 at 6:02 PM, KA2WEU--- via time-nuts
<time-nuts at febo.com
>> wrote:
>>
>> I am working with this ...... amazing device, Ulrich N1UL
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