make note of the new balun

[hw/telemetrum] / Notebook

diff --git a/Notebook b/Notebook
index c45d0e9ef2f6ecd8f23ee2a97ff193c3cdab30a3..8752c43270270df7384e3d00f1fc95616b0f3cbb 100644 (file)
--- a/Notebook
+++ b/Notebook
@@ -200,3 +200,11 @@
   requires "return to Bdale for rework".  We should fix this for a future PCB
   revision.
 
+2011.09.12
+- chatted with Adrian some yesterday.  He likes a Bosch pressure sensor that
+  is DK 828-1005-1-ND .. i2c output, similar range to our current part but
+  smaller, around $5 at our build quantities.
+
+2011.12.10
+- the Johanson balun/filter for 70cm use with cc1111 is DK 712-1540-1-ND
+  uses less PCB area, but lower performance than the discrete approach