[eagle] Re: 70cm Receiver Temperature Run in External Reference Mode.
bill at hsmicrowave.com
Wed Jul 4 20:21:01 PDT 2007
Hi Jim, et al.,
The 10 MHz oscillator I use is a voltage controlled (it could be phase
locked) temperature compensated crystal oscillator, the Taitien (a
Taiwan company) Model TCCTDLSANL at $3.93 each in quantities 1 to 10
pcs. Their web site (for ordering online) is "t-mallusa.com."
1. +/- 2.5 PPM stability (the test data supplied shows it did +/- 2PPM)
over -40 to +85 (down to +/- 0.5 PPM available but at a much higher cost)
2. +/- 0.5 PPM frequency accuracy at 25C
3. 5V at 2mA
4. 0.8 Vp-p clipped sinewave output into 10Kohm load
5. 7x5x1.85mm ceramic SMD package
6. Phase noise at 10Khz is -149 dBc/Hz (confirmed in the S2 concept
Digikey and Mouser stock similar product but I'm very pleased with the
performance and service I get from these folks.
So there you have it...Bill - N6GHz
Jim Sanford wrote:
> Please share with ALL of us the info on the one you've settled on. I
> for one, will use it in the design of my terrestrial microwave system
> . . .
> Thanks & 73,
> wb4gcs at amsat.org
> Bill Ress wrote:
>> Hi Juan,
>> Again - splendid data. Your testing has uncovered an important issue
>> with the digital10 MHz oscillator. John, in a prior post has agreed to
>> switch to an analog oscillator for rev B, so the issue is behind us,
>> again thanks to your efforts. That also gets rid of the only BGA device
>> on the board and that did cause you some gas pain early on in the
>> assembly phase.
>> I'm sure John has leads on a analog suitable oscillator but I'll
>> communicate with him with the info on the one I settled on.
>> Happy 4th to all...Bill - N6GHz
>> Juan Rivera wrote:
>>> I ran a Temperature Run on the 70cm Receiver in External Reference
>>> Mode. Click HERE
>>> for details...
>> Via the Eagle mailing list courtesy of AMSAT-NA
>> Eagle at amsat.org
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