Re: [IRCA] TA's Last Night

[Russ Edmunds <wb2bjh@xxxxxxxxx>]

--- "J.D. Stephens" <jdstephens_99@xxxxxxxxx> wrote:

> I was intrigued by all the TA loggings from Central
> and Eastern Europe posted last night.  I noticed that
> the A index was 24 and K was 2.  I thought with such
> conditions, that TA propagation would be fairly
> nonexistent.  Obviously, I was wrong on that.
> 
> Can anybody send me a good explanation (in layman's
> terms) of how such as a high A index can favorably
> effect TA reception conditions?  Sending replies to me
> off-list would probably be good for this discussion.
> 
>

1) The A=24 was very sudden. Propagation is also a function of
long-term conditions, and since those had been quite good, the sudden
increase in the A didn't have an immediate effect.
2) It could also be that the A reacted to a temporary and short-lived
disturbance which caused a spike which wasn't sufficient to have much
effect.

I'm at work and therefore unable to check what the values have been since...

Russ Edmunds
Blue Bell, PA  ( 360' ASL )
[15 mi NNW of Philadelphia]
40:08:45N; 75:16:04W, Grid FN20ID
<wb2bjh@xxxxxxxxx>
FM: Yamaha T-80 & APS9B @15'
AM: Hammarlund HQ-150 & 4' FET air core loop

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 
_______________________________________________
IRCA mailing list
IRCA@xxxxxxxxxxxxxxxx
http://arizona.hard-core-dx.com/mailman/listinfo/irca

Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers

For more information: http://www.ircaonline.org

To Post a message: irca@xxxxxxxxxxxxxxxx