I should have also asked if someone would share a link to an SMA connector they are using to connect the Clocktamer to the USRP.
Yes, I realized my mistake...but, I appreciate Dexter's reply :)...and of course your reply is much appreciated.
Oh, yes. That's also a "50 Ohm resistor", but with a different purpose.
Mike, you should have described intended usage a bit better. :)