On Wed, Aug 4, 2010 at 1:50 PM, Bruce Griffiths <[email protected]> wrote:
> The TCXO output waveform is presumably a clipped sinewave as required by the > SE4120L? I posted the waveform at http://www.pericynthion.org/stuff/KT3225_500mV_per_div.jpg Does that count as clipped sine? If not, it seems to work anyway. > > In which case a linear distribution amplifier is probably required. > > With only a ~3V supply available, options for the distribution amplifier > topology are somewhat limited. I'm making a custom board that will include the TCXO and distribution amplifier (as well as some digital stuff to allow the 4 receivers to communicate), so it can have whatever power supplies it needs. > In principle you could use an emitter follower driving 4 other emitter > followers with a resistor in series with the emitters of the output devices > and the AC coupled loads to match the source to the interconnecting cable > impedance to minimise reflections without requiring excessive dissipation in > the emitter followers. > With the low voltage supply available, using an RF choke is series with the > emitter follower's emitter to ground resistor will also be useful in > achieving the required dynamic range. Thanks. Henry _______________________________________________ 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.
