[time-nuts] Are there any rubidiums programmahttps://mail.google.com/mail/?shva=1#inboxble to 40 MHz?

Stan, W1LE stanw1le at verizon.net
Mon Mar 25 12:09:33 EDT 2013


Hello Dave,

The problem I experienced with a Rb at 10 MHz stabilizing a AD6IW PLL at 
106.5 MHz
for a DB6NT 10 GHz G2 transverter,
was the significant microphonics after multiplication.
The original xtal oscillator did not have microphonics, but would drift.

My solution was to add a ISO-Temp 10 MHz OCXO as  a reference to the PLL.
This provided me with the frequency accuracy and stability
needed for a weekend of microwave contesting, USB/CW

My 10 GHz operation is portable and I rove.

Stan, W1LE    Cape Cod   FN41sr



On 3/25/2013 10:17 AM, David Kirkby wrote:
> I'm possibly looking for a 40 MHz source and I know some of the
> rubidiums are programmable. But can any of the affordable ones be
> programmed to work at 40.0 MHz?
>
> I was looking for a source to drive this 144 MHz -> 10 GHz transceiver.
>
> http://www.chris-bartram.co.uk/products.html
>
> The TCXO oscillator is off the board and a separate item, but costs
> £40 and then one ideally wants to lock that to a more precise source.
> The oscillator will lock to an external 10 MHz source, but then one
> needs to buy both a 10 MHz rubidium as well as this 40 MHz TCXO. Hence
> I was wondering if there was a cheaper more compact solution, which
> just used a rubidium, and dispensed with a TCXO.
>
> Dave
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