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

[Jeff Mock]

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
>>

I've been using a TADD-1 for about 6-months now and I'm quite happy with 
it.  You certainly can't beat the price.  I added the optional 10MHz BPF 
and tuned it with a tracking generator and spectrum analyzer.  The 
outputs are very clean.

I've never tried to measure phase noise, but the op amps and the rest of 
the circuit seem to be good choices to me.  tvb did some analysis of the 
box you might find interesting:
    http://www.leapsecond.com/pages/tadd-1/

jeff