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--- ubitx:calibration [2019/09/23 21:27]
f4ija
+++ ubitx:calibration [2019/09/23 23:04] (current)
f4ija
@@ Line 29: / Line 29: @@
 However, I think this method is quite simple and easy to measure by the community of WSPR spotters. Another useful thing with WSPR !
+==== Extra tests : electronics heat importance ====
+After the conclusion of the calibration, I wanted to test if the heating of the electronics could have a noticable impact upon the deviation of the frequency.
+So, I've tested my Ubitx with a WSPR spotting just after a cold boot (after at least one day without turning it on) and after a while, at least 30 minutes.
+The results are in the Test folder, with the name **WSPR deviation heating up.ods.**
+After a cold start :
+{{ :ubitx:heatdeviation1.png |}}
+After at least 30 minutes, without changing everything else :
+{{ :ubitx:heatdeviation2.png |}}
+The result is much better !!
+Let's try after more than one hour :
+{{ :ubitx:heatdeviation3.png |}}
+OK, it's not better. Maybe there is not enough values to validate the results but it seems that there no improvements after 35 minutes.
+The point is that you need after all to wait before making some calibration to be sure to have right values and not fluctuing measures.
 ===== Calibrating the BFO =====

F4IJA