[time-nuts] HP3325B as LO for a transceiver or receiver? Phase noise?

[Brooke Clarke]

Hi Mark:

It's not clear to me why pager testing requires such good phase noise.  I wonder if some of the amateur modes also have 
that need?
Maybe WSPR?
https://prc68.com/I/DRM.shtml#WSPR

-- 
Have Fun,

Brooke Clarke, N6GCE
https://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
axioms:
1. The extent to which you can fix or improve something will be limited by how well you understand how it works.
2. Everybody, with no exceptions, holds false beliefs.

-------- Original Message --------
> I have done a study of how good it needs to be on my website:
>
> https://sites.google.com/site/markstcxomeasurements/
>
> Regards,
>
> Mark
>
>
> On Tue, Jan 1, 2019 at 2:34 PM Artek Manuals <Manuals at artekmanuals.com>
> wrote:
>
>> The question that remains begging here from the original post (maybe off
>> topic ?) is how low a phase noise does he really NEED in this
>> application? We here at time-nuts tend to think in the 10e-12 minutia
>> area, but In this application ( a HF Communications receiver) the 3325B
>> may be "good enough" that PN wont really be an issue as a practical
>> matter. Don't see who the original poster is from this snippet but a
>> possible better place to get a "practical" answer might be over on the
>> EEVBlog?
>>
>> Dave
>> manuals at artekmanuals.com
>>
>>
>> On 1/1/2019 3:38 PM, Brooke Clarke wrote:
>>> Hi Chris:
>>>
>>> The HP 8648 Signal Generator was developed to have low phase noise
>>> that was needed for testing pagers.
>>> See second table of SSB Phase Noise at:
>>> https://prc68.com/I/HP8648.shtml
>>>
>>> --
>>> Have Fun,
>>>
>>> Brooke Clarke
>>> https://www.PRC68.com
>>> http://www.end2partygovernment.com/2012Issues.html
>>> axioms:
>>> 1. The extent to which you can fix or improve something will be
>>> limited by how well you understand how it works.
>>> 2. Everybody, with no exceptions, holds false beliefs.
>>>
>>> -------- Original Message --------
>>>>     01/01/2019 14:22
>>>>
>>>> Could I use my HP3325B locked to a Trimble Thunderbolt GPS disciplined
>>>> 10MHz oscillator as the master LO of my Kenwood TS-590S transceiver
>>>> that has a LO at 15.6 MHz, or is the phase noise too great? My VK3HZ
>>>> gps disciplened LO replacement died recently, I may be able to repair
>>>> it but as they are no longer available I am looking at alternatives to
>>>> achieve a very stable frequency. Thanks
>>>>
>>>> https://www.febo.com/pages/hp3325b/
>>>>
>>>> http://www.vk3hz.net/XRef/XRef_Home.html
>>>>
>> --
>> Dave
>> Manuals at ArtekManuals.com
>> www.ArtekManuals.com
>>
>>
>> ---
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