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

Stan, W1LE stanw1le at verizon.net
Tue Mar 26 12:31:24 EDT 2013

I should of been clearer, Thanks for your comments.

final configuration is:

OCXO as a 10 MHz reference to the 106.5 MHz PLL then the DB6NT 
multiplier chain for the LO.

All of the stability I need for a contest weekend.

Stan, W1LE

On 3/26/2013 1:21 AM, Rex wrote:
> Please tell us if I am parsing the content of your message correctly 
> with my inserted comments.
> On 3/25/2013 9:09 AM, Stan, W1LE wrote:
>> 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,
> I assume by "stabilizing" you mean that the rubidium was providing the 
> reference frequency to the PLL.
>> 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.
> By "add" I think you mean replace, as in, the rubidium is no longer 
> used but the OCXO has replaced it as the PLL's reference. If you 
> really meant add, that would imply that somehow the rubidium is 
> disciplining the 10 MHz OCXO.
>> 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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