Hi They may be designed to be as close as you can get to a 50 ohm splitter. The sum port is where that is most likely to fall apart.
Bob > On Jul 19, 2015, at 10:51 AM, Dr. David Kirkby (Kirkby Microwave Ltd) > <[email protected]> wrote: > > On 19 July 2015 at 13:39, Bob Camp <[email protected]> wrote: > >> Hi >> >> One thing worth checking: >> >> The impedance at the “sum” port may or may not be 50 ohms. It’s worth >> checking before you >> go to extreme lengths to come up with a “perfect” 50 ohm amp. >> >> ====== >> >> Since part of the world likes 75 ohms, it’s also worth taking a look at >> the isolation numbers >> with the sum port terminated in 75 (or 75 / 4) ohms. There are a number of >> high power / low >> noise amps out there (apparently) designed for cable distribution systems. >> >> Bob >> > > > These are definitely designed as 50 Ohm splitters - I have the data sheet > on them. > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
