[Elecraft] RE: PowerSDR/IF stage v0.91 Released

[Jerry Flanders]

John, please post info on the crystal when you have it. And if a 
quantity purchase gets a better price, there are probably several of 
us who might help get the order quantity up.

Jerry W4UK

At 06:50 PM 11/25/2007, John A. McCabe wrote:


>I think I have found a supplier for a 32.800 Mhz crystal, which 
>would put the softrock at around 8200 and make it a more reasonable 
>15000hz offset.  I hope that this will still be far enough away from 
>the 8215 IF to not cause any problems, while making the bandpass a 
>little more symmetric.Someone else had mentioned the use of a 
>HPL-4562 opto-coupler to provide more buffering for the softrock. I 
>may order one and give it a try. If it works, a crystal even closer 
>to the IF may work without causing problems. Of course, I won't be 
>able to test any of this until my K3 arrives, hopefully in December 
>as I am in the first batch.