LF: Re: Re: VO1NA in daytime

["Alan Melia" <alan.melia@btinternet.com>]

Hi Jim a low level geomagnetic event pushed the Dst index down a bit on the
30th and the 1st. At this time of year this could give a significant
increase in the daytime ionisation in the D-region. I have seen very
noticable effects on shorter daytime paths immediately after a major
geomagnetic event, and I have seen some variations that seemed in time with
Dst values on the path to Lakihegy HGA22. My other thought is that the
daytime D-layer could be weaker at this time of year and not absorbing so
strongly so the signals could reach the E-region. However it seems unlikely
that the returning signal would be strong enough to detect.

Alan

----- Original Message ----- 
From: "James Moritz" <james.moritz@btopenworld.com>
To: <rsgb_lf_group@blacksheep.org>
Sent: Saturday, December 03, 2011 4:03 PM
Subject: LF: Re: VO1NA in daytime


> Dear LF Group,
>
> I was away from home for the last few days, but left the 136k receiver
> going. Generally, conditions have been rather noisy over the last week,
> although signals around 137.78kHz have been visible from time to time from
> XES, XKO, XGJ, XNS, VO1NA, RA3AGC, UA4WPF, "YS". I have not quite had a
> repeat of the daytime reception of VO1NA seen a week ago, but traces of
> Joe's signal were visible up to about 1100utc on 30th November and 1st
> December - see attachment. Also visible in the attachment is AGC, even
> though the whole path must have been in full daylight for a few hours.
>
>
> Cheers, Jim Moritz
> 73 de M0BMU
>