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 downconverter LO)

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:

Bill: 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, Jim wb4gcs@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:

...

All,

I ran a Temperature Run on the 70cm Receiver in External Reference Mode. Click HERE http://www.juanr.com/pages/hobbies/ham_radio/Eagle/Temperature_Run.htm for details...

73,

Juan

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