[time-nuts] Sine or TTL signal transmission for low phase noise?

[Vasco Soares]

Hi!

Taking a 10MHz signal from a rubidium clock to an external device it is better to use 0.5-1Vrms sine wave or TTL? A 75 ohm coaxial cable will be used with just 1 meter long. In any case the receiver will be made around a unbuffered gate with self biasing (it seems that the 74AC type has better phase noise performance, as stated on http://www.ham-radio.com/sbms/LPRO-101.pdf. Circuit behaviour with other series like VHC, LV are unkown, at least for me!). Anyone have experience on EMI/RFI issues and phase noise performance under these circumstances?

Regards,
VS