[DSP-10] Source of HP10811

[Pieter]

Hi,

Does anyone know where I can find an HP10811 10 MHz oscillator cheap? I have
seen a couple inside HP counters on ebay but I would like to just get the
source. As a work around of not having the HP10811, I was thinking of the
following:

Take a really good OCXO that is not tunable and feed it into an Analog
Devices AD9854 DDS chip. Use the times (x5) multiplier so that the reference
is 50 MHz inside the chip. This chip has a 48bit frequency register so the
output frequency could be set in steps of
.00000017763568394002504646778106689453 Hz at ANY output frequency between 0
and ~20 MHz. I have a couple of these chips already on boards so I would not
have to solder the 80 pin chip :). The phase detector would be very similar
to the Shera board, but would not require a DAC to drive it since the serial
data would set the DDS instead. Also, I could come up with the tuning words
that limit the tuning range to 16 Hz around any desired frequency and not
have to manually tune the OCXO. Also the OCXO would not have to be exactly
at 10 MHz. Any ideas?

Pieter Ibelings
N4IP