Re: LF: VO1NA on 477kHz last night

["Roelof Bakker" <roelof@ndb.demon.nl>]

Graham,

Thanks for the info regarding immunity to static for OP8.

> I noticed  last  night,  high  background  noise  ,  and  Joe's  signal  
> dropped  at  one point ,  that  may of  been a  Ae change ?
The Kyoto Dst dropped at 22:00 UTC from +17 to -1.
-1 does in no way correlate to bad propagation; this is more the case for  
a Dst < -20.
However, I have often observed when the Dst does change very little,  
conditions are good.
It seems irrelevant if this is the case with a Dst of e.g -15 or +5.

My feeling is that abrupt negative changes in the Dst call for poor  
propagation.
Propagation can change very abrupt, just like a curtain being closed or  
opened.
73,
Roelof