[time-nuts] TADD-1 six channel RF distribution amplifier

[Steve]

Thanks for the info Bruce.

I'm planning to use the Trimble Thunderbolt as the 10MHz source.

The phase noise characteristics of that device are on the Trimble web 
site. I'm not versed enough in the specifications to call it good, bad 
or mediocre with respect to phase noise. Thoughts?

Thanks.

Steve K8JQ

Bruce Griffiths wrote:
> Steve wrote:
>   
>> I'm thinking about using the TAPR TADD-1 six channel RF distribution 
>> amplifier to distribute the 10MHz output of my Trimble Thunderbolt to a 
>> few pieces of test equipment.
>>
>> What does the TADD-1 do to the phase noise characteristics of its 
>> outputs as compared to the phase noise characteristics of  its input? 
>> Improve? Degrade? Little or no change?
>>
>> Thanks.
>>
>> Steve K8JQ
>>
>>   
>>     
> Like any distribution amplifier it always degrades the signal phase noise.
> Whether the amount of degradation is significant or not depends on the 
> phase noise characteristics of your source.
>
> If your signal source phase noise is 10dB greater than the intrinsic 
> phase noise of the distribution amplifier than the increase in the phase 
> noise at the distribution amplifier is relatively insignificant.
>
> Thus you need to know the phase noise characteristics of your source and 
> of the distribution amplifier (when set to the gain you need).
>
> The phase noise characteristics of the distribution amplifier vary with 
> its gain.
>
> The phase noise of your source and a distribution amplifier vary with 
> the frequency offset at which they are measured.
>
> What source are you intending to use?
> Do you know its phase noise characteristics?
>
> Bruce
>
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