[Lf] [Fwd: LF: Observation, drop in LF noise]

[Andre' Kesteloot]

Larry Kayser wrote:

>  Greetings All: The following is an observation the occurred about
> an hour ago that may be of interest to some in the LF and LowFer
> communities. I am watching 189.000 +30, -30 Hz with Gram
> continuously while I am in the shack here.  There are two signals I
> am seeing on this part of the spectrum, one carrier that goes on and
> off from time to time is on 189.008 kHz.  There is a much weaker
> signal on 189.000 that in the daytime is a faint trace line.  There
> is another signal that is louder in the evening on 189.000, I am
> assuming the two signals on 189.000 are from different sources.  I
> am looking for a LowFer beacon signal on 189.000, so far I can not
> confirm I have seen it. There was an M class flare at 11.59 utc,
> peaked at 12:14 utc, ended at 12:33 utc. At about 12:48 utc the
> screen presentation from Gram suddenly went from typical noise spots
> to almost ZERO noise, the signal level on 189.008 kHz stayed the
> same level and the trace signal on 189.000 kHz stayed the same level
> although it was certainly easier to see.  Without having the
> confidence of my observation I started poking around for a bad RF
> connector in the system.  The duration of the low noise was for very
> nearly two minutes then the noise returned to normal levels.  By
> this point I had nearly torn the place apart looking for the bad
> connector that I now feel does not exist.  The low noise period had
> moved to very nearly the edge of the screen when I realized that the
> 189.008 kHz signal level had stayed the same throughout the event
> period, only the noise had changed in level. The 15 minute
> difference from the end of the M level solar event started me
> wondering if the lack of noise and the M level event might be
> related. If anyone else has an observation of a varying level of
> noise on LF during this time period today I would be interested to
> hear about it. LarryVA3LK
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