Low Pass Filter problems
#4
Thanks Andrew,
I have found the schematics.  It looks like a problem with one of the multiplexers or signal lines when the filter is selected on the E channel.  I will have to trace through with a scope probe.  

Hartmut
This morning I made a note of the gain settings whilst running under 'automatic' and then adjusted the gains using manual mode on the channels I have LP filters fitted.  I am now running much higher gain on the two channels with LP filters, the noise has come back up a bit, but signal to noise has gone up a lot.

There is quite a lot of activity around North Africa and southern Greece just now and my two H-field antennas with LP filters are much more sensitive and picking up these strokes much better since making the change.

I am going to see how well it runs today and then look at thresholds.  After which I will document my findings.

Robin
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Messages In This Thread
Low Pass Filter problems - by DrRobin - 2016-10-20, 19:54
RE: Low Pass Filter problems - by DrRobin - 2016-10-21, 08:21
RE: Low Pass Filter problems - by allsorts - 2016-10-21, 16:34
RE: Low Pass Filter problems - by Ranieri - 2016-10-22, 07:14
RE: Low Pass Filter problems - by DrRobin - 2016-10-21, 22:17
RE: Low Pass Filter problems - by allsorts - 2016-10-21, 23:53
RE: Low Pass Filter problems - by allsorts - 2016-10-22, 18:55
RE: Low Pass Filter problems - by DrRobin - 2016-10-25, 21:23
RE: Low Pass Filter problems - by allsorts - 2016-10-25, 22:14
RE: Low Pass Filter problems - by DrRobin - 2016-10-31, 22:18
RE: Low Pass Filter problems - by DrRobin - 2016-11-02, 17:56
RE: Low Pass Filter problems - by DrRobin - 2016-11-02, 18:05
RE: Low Pass Filter problems - by allsorts - 2016-11-02, 22:04

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