While investigating recent threads on Distribution Amps, I ran across a DA project on Didier's web site at http://www.ko4bb.com/Timing/Distribution_Amp/ and http://www.ko4bb.com/ham_radio/Extron_3_80/. Those pages describe using an Extron ADA 3 80 analog video distribution amp to distribute a 10 MHz frequency reference to lab instruments. It seems to be a cheap, easy way to get a set of reference frequencies throughout a small lab. I would be interested to hear about any further testing and characterization was done with that setup, such as noise, distortion, etc.
I have a couple of the Extron DAs to play with, and would like to use them if they will do the job. I'm only looking for frequency distribution; not timing. Frequencies of interest are: 10MHz, 5MHz and 1MHz. I haven't been able to find schematics for the Extron DA, but according to the author's discussion, it seems to be very similar to the DA circuit schematics at http://www.ko4bb.com/~bruce/IsolationAmplifiers.html. I haven't had time to reverse engineer the circuit in my Extron DA, but it surely would be nice to avoid it if possible. Anyone have a schematic, or a source for it? Also, looking for a source of low cost 1:1 and 2:1 Ethernet transformers. I've tried the local computer shops, but they don't seem to be interested in helping. Dave M _______________________________________________ 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.