Learn SDR 09: Pluto to RTL SDR

Learn SDR with Professor Jason Gallicchio at Harvey Mudd College
Lesson 9: TX from Pluto (or HackRF or USRP or LimeSDR), RX on RTL-SDR
Transmit a tone from one SDR and see it on another. See that the frequencies don't quite match. Even if you match them, they drift (say with temperature).
Since the sample rates don't quite match, warn about putting both into the same Time or Frequency Sink block. Do this and see the thing freeze after some amount of time. Note that actual sample rates are close to, but not exactly what you ask for.
HW: Transmit real square waves, triangle waves, and other shapes. Does a square wave contain only odd, only even, or all harmonics? Triangle wave?
gallicchio.git...
All GNURadio flowgraphs are at:
github.com/gal...
--- Learn SDR with Professor Jason Gallicchio