[time-nuts] combining same frequency for redundancy
Tony Greene
tonygreen924 at inbox.com
Wed Jun 4 03:22:22 UTC 2014
About 50 years ago I ran into a Frequency Division Multiplexer that used a redundant master frequency system. I beleive they combined the same frequency for the master oscillator, but it was something like a special hybrid combiner. I remember that they used a phase angle of 135 degrees - and then if they lost one signal, the power went down by 3 db on the main pilot. Anybody no any details on this type of system ?
What I am looking for is to have an input to a distribution amplifier where I can connect and disconnect two different inputs and keep the output systems up and running.
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