Posted by
David Toepfer on
Jun 15, 2004; 2:50am
URL: http://elecraft.85.s1.nabble.com/Application-Note-KX1-S-meter-calibration-procedure-tp367815.html
This procedure got an initial nod from Wayne so I am posting it to the list for
broader peer review as it were...
kb3ipe
dt
.
----
The procedure outlined on p65 in the SIG row of the table for adjusting the
S-meter calibration does not seem to work well for me, so I have developed and
followed this procedure, which is similar but takes into account the apparent
effect adjusting H has on L.
If you find this procedure to be correct and superior it would probably best
fit on p68 between the VFO Lock/Unlock procedure and the Operating Frequency
Calibration procedure.
1) Set LEd to InF.
2) For each H setting record the L settings that result in s9 (5 bars) with an
Elecraft XG1 Receiver Test Oscillator / S-Meter Calibrator attached and set to
50uV:
Example:
H L
- -
2 50, 51
3 55, 56, 57
4 60, 61, 62, 63
5 65, 66, 67, 68, 69
6 70, 71, 72, 73, 74, 75
7 75, 76, 77, 78, 79, 80, 81
3) Then remove all values (indicated in []'s) that show even anything more than
all blank (including a flashing 1) with an Elecraft DL1 Wideband 20W Dummy Load
connected:
Example (cont.):
H L
- -
2 [50, 51]
3 [55, 56, 57]
4 [60, 61, 62, 63]
5 [65, 66, 67, 68, 69]
6 [70, 71, 72,] 73, 74, 75
7 75, 76, 77, 78, 79, [80, 81]
4) Set for the lowest H value (indicated in ()'s) with L values not all
eliminated and then set for that lowest non-eliminated L value (indicated in
()'s):
Example (cont.):
H L
- -
[...]
(6) [70, 71, 72,] (73), 74, 75
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