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[wikirepo] / notes / a_40-ish_dB_tap / index.mdwn

diff --git a/notes/a_40-ish_dB_tap/index.mdwn b/notes/a_40-ish_dB_tap/index.mdwn
index 6ba067f..70f16c8 100644 (file)
--- a/notes/a_40-ish_dB_tap/index.mdwn
+++ b/notes/a_40-ish_dB_tap/index.mdwn
@@ -1,11 +1,13 @@
-I build the 40dB tap from the same QST article as my power meter:
+I build the 40dB tap from the same QST article as my [powermeter](notes/W7ZOI_Power_Meter).
 
-[[!img IMG_20190702_201621.jpg size=600x300]]
+[[!img IMG_20190702_201621.jpg size=800x600]]
 
 To make it useful, I need to measure the coupling and insertion loss, so here
 goes.  S1 and S2 are the through ports, S3 is the tap.  It's pretty flat over
 7-433MHz, with a through loss of <1dB and a coupling of 34-35dB.
 
+Test setup is the FT817 in FM mode and lowest power as the signal source, through a 20dB pad to the source port of the coupler, the [powermeter](notes/W7ZOI_Power_Meter) connected to the measured port, and my better [50R termination](notes/Characterising_a_coupler/) for the remaining port.
+
 <table border="1" class="dataframe">
   <thead>
     <tr style="text-align: right;">
@@ -83,4 +85,4 @@ goes.  S1 and S2 are the through ports, S3 is the tap.  It's pretty flat over
   </tbody>
 </table>
 
-[[!tag draft]]
+[[!tag draft radio FT817]]