(no commit message)

[wikirepo] / notes / Characterising_a_coupler / index.mdwn

diff --git a/notes/Characterising_a_coupler/index.mdwn b/notes/Characterising_a_coupler/index.mdwn
index 99f64c5..eb75468 100644 (file)
--- a/notes/Characterising_a_coupler/index.mdwn
+++ b/notes/Characterising_a_coupler/index.mdwn
@@ -44,11 +44,6 @@ To measure directivity:
 | 145.00          | -18           | -14              |
 | 435.00          | -22           | -8               |
 
-The directivity doesn't match the datasheet, even at low frequencies, but I
-might blame the 50R termination as any reflected power will be seen in this measurement, see below:
-
-[[!img notes/Characterising_a_coupler/IMG_20180930_203828.jpg size=300x300]]
-
 The directivity doesn't match the datasheet, even at low frequencies, but I
 might blame the 50R termination...
 
@@ -65,9 +60,9 @@ might blame the 50R termination...
 Repeating the measurement with the better 50R terminator shows much improved
 directivity (shock horror!).
 
-|                 |            Directivity [dB]         |
-|                 |------------------|------------------| 
-| Frequency [MHz] | Poor termination [db] | Good termination[db] |
+|                 |            Directivity [dB]         ||
+|                 
+| Frequency [MHz] | Poor termination [dB] | Good termination [dB] |
 |-----------------|------------------|------------------| 
 | 1.80            | -44              | -54              |
 | 5.36            | -40              | -52              |