Update README.md

README.md

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 A wspr transmitter and general coverage receiver using the QRP Labs arduino shield and receiver module.\
 Headless design, no display or switches.  Computer controlled with WSJT-X, HRD, or stand alone transmit operation.\
 A Canaduino WWVB receiver was added to provide time correction.\
-A display and encoder were added, so no longer headless.
+A display and encoder were added, so no longer headless.\
+  Tap encoder - change freq step.\
+  Double tap encoder - toggle mode between CAT control or FRAME transmit.\
+  Long Press encoder - change band.\
 
 Status:  Works well.