Steve said the following on 03/27/2008 09:35 PM: > 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 did some testing a while ago on a TADD-1 as well as an HP 5087A and Spectracom 8140T line amplifier. At 5 MHz, for offsets above 1 Hertz, the TADD-1 is better than the HP amp (the 5087A is better at very low offsets, though). The results are at http://www.febo.com/pages/amplifier_phase_noise/ I've learned a bit about technique since I did this test, and want to rerun it one of these days. But the data shouldn't be more than a few dB off. John _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.