[Elecraft] KAT100 Tuning Failure

JeremyJones va3ztf at gmail.com
Mon Jul 20 19:15:36 EDT 2015


Ok, so I've removed the KPA100 completely, and disconnected the KAT2 serial
and RF connections.  I connected my W2 watt meter on the output of ANT2 of
the KAT100, and the LOAD side of the sensor to a 50 ohm dummy load.  The
readings and indications I got are as follows:

160M	1.00:1	No LED indication on KAT100.  K2 showed 1.0:1
80M	1.00:1	No LED indication on KAT100.  K2 showed 1.0:1
60M	1.00:1	LEDs on KAT100 flickered a bit and remained off once tuning was
finished.  K2 showed 5.6:1
40M	1.00:1	LEDs on KAT100 flickered a bit and remained off once tuning was
finished.  K2 showed 5.6:1
30M	1.00:1	LEDs on KAT100 flickered a bit and finally lit 2.  K2 showed
2.3:1
20M	1.00:1	LEDs on KAT100 lit as expected and finally lit 1.  K2 showed
1.2:1
17M	1.00:1	LEDs on KAT100 lit as expected and finished at 1.  K2 showed
1.0:1
15M	1.00:1	LEDs on KAT100 lit as expected and finished at 1.  K2 showed
1.0:1
12M	1.05:1	LEDs on KAT100 lit as expected and finished at 1.  K2 showed
1.0:1
10M	1.00:1	LEDs on KAT100 lit as expected and finished at 1.  K2 showed
1.0:1

I'm still digging around for the diodes, but if I haven't found any by
tomorrow I'll be putting in an order to digikey.



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