1 files changed, 2 insertions, 0 deletions

diff --git a/README.md b/README.md
index 91d3982..0b13585 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,8 @@ An open source, software-configurable `VHF` `RF` power amplifier.
 * Drain bias (supply) voltage regulator
 * Input drive attenuator
 
+Silicon Lab's `Si4468` tranceiver is used to generate the PA input tone.
+
 # RF Primer
 
 If you are new to the topic, you can read:<br>