[Elecraft] K3. S/No:4250

[Eric Buggee; VK3AX]

Hi David
                  I agree you are quite correct; what is concerning me 
is that if Both Rx synthesisers are controlled by the TCXO why am I 
seeing this shift?

I will be the first to acknowledge that I have done -or- am doing 
something wrong in the operation / use of my rig;
at the moment, i tend to think it is a problem with one of the Rx 
synthesisers.

(BTW the whoosh is worse when I have the RX set on to an odd number 
Least Significant Digit, eg 9 or 7 etc as opposed to a rounded number, 
eg "0")

I will carefully go through the Sub Rx set-up procedure again & see if 
this fixes the problem.

Thank you & all others for your constructive input.

Eric, VK3AX.


On 1/4/2012 3:39 AM, David Windisch [via Elecraft] wrote:
> First whack at at it:
>
> Assumptions:  signal: 1.860 MHz;  local osc: 1.860 + 8.215 = 10.075 MHz
>
> In 6 weeks, there are about 36.56016E12 local oscillator cycles, for 
> the top-band frequency given.
>
> Each cycle takes the reciprocal of 36.56016E12 in time.
>
> Think of the local osc signal as a Slinky on its side with 36.56016E12 
> turns spread exactly evenly over 6 weeks.
>
> I'm thinking that expecting the first and all subsequent cycles not to 
> wander a bit in time-position over a 6-week term is not justifiable.
>
> Does that make sense?
>
> Brgds,
> Dave, N3HE
> Maths done on windoze accessory calculator
>
> ------------------------------------------------------------------------
> If you reply to this email, your message will be added to the 
> discussion below:
> http://elecraft.365791.n2.nabble.com/K3-S-No-4250-tp7143174p7147310.html
> To unsubscribe from K3. S/No:4250, click here 
> <http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=7143174&code=ZXJpY3ZrM2F4QGVzYy5uZXQuYXV8NzE0MzE3NHwtMTMwMDIyODQzNg==>.
> NAML 
> <http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.InstantMailNamespace&breadcrumbs=instant+emails%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> 
>



--
View this message in context: http://elecraft.365791.n2.nabble.com/K3-S-No-4250-tp7143174p7148465.html
Sent from the Elecraft mailing list archive at Nabble.com.