[time-nuts] distribution amplifier

John Ackermann N8UR jra at febo.com
Sat Aug 26 07:36:48 EDT 2006


Would have been useful to actually attach the attachment...

Sorry.

John
----

John Ackermann N8UR said the following on 08/26/2006 07:35 AM:
> SAIDJACK at aol.com said the following on 08/25/2006 10:23 PM:
> 
>>Hi Didier,
>> 
>>I tried this with a Maxim video amp, and my 10MHz noise floor went from  
>>-155dBc/Hz on the input to about 80-90dBc/Hz on the output of the amp.
>> 
>>80dBc is great for Video (generally arund 50dB SNR), but for timing it's a  
>>catastrophe...
> 
> 
> That's interesting.  The MAX477 video amp that is used in the TADD-1
> (http://www.tapr.org/kits_tadd-1.html) does a lot better than that.
> Here is a phase noise plot of the TADD-1 at 10MHz; it is better than
> -105dBc at 1Hz and reaches a noise floor of -142dBc at less than 100Hz.
> 
> John
> 

-------------- next part --------------
A non-text attachment was scrubbed...
Name: TADD-1_Residual_PN_at_10MHz.png
Type: image/png
Size: 4587 bytes
Desc: not available
Url : http://www.febo.com/pipermail/time-nuts/attachments/20060826/9a3aed3e/attachment-0001.png 


More information about the time-nuts mailing list