[linrad] Re: Linrad via Ethernet

["Bob Stiles" <b06.s@xxxxxxxxx>]

> Oooh! I would not accept phase jitter to accumulate. It makes the
> system useless at high frequencies because the sideband noise that
> it is equivalent to will degrade the dynamic range. The SDR-14
> for example is nearly useless on 144 MHz just because the clock
> has phase jitter - but on low HF frequencies it is perfectly ok
I wasn't planning to go up this high - I have a 90MHz low pass filter on the analog front end.  I agree about the jitter being a big problem at high frequencies.  When I began the project, multi channel DDCs didn't exist, so clock distribution was always going to be an issue.  The design is really a master with zero or more slaves, and the OCXO is on the master, close to the AD6644.

> It seems to me you are not doing amateur radio. Sounds more like MRI
> or something scientific:-)
Yes.  But I watch the Linrad developments with great interest, because it's closely related!  Thanks, Leif.
73
Bob

--

#############################################################
This message is sent to you because you are subscribed to
  the mailing list <linrad@xxxxxxxxxxxxxxxxxxxxx>.
To unsubscribe, E-mail to: <linrad-off@xxxxxxxxxxxxxxxxxxxxx>
To switch to the DIGEST mode, E-mail to <linrad-digest@xxxxxxxxxxxxxxxxxxxxx>
To switch to the INDEX mode, E-mail to <linrad-index@xxxxxxxxxxxxxxxxxxxxx>
Send administrative queries to  <linrad-request@xxxxxxxxxxxxxxxxxxxxx>


LINRADDARNIL