Interesting to see VK3QN (fixed long path 12-element array) being received at 14MHz in a very different manner and timing to recent quiet field conditions. Blue (13) is received signal on 13th October 2020, and orange (19) is received signal on 19th October 2020:
Oddly, the 19th October signal that comes in well ahead of the long path period is stronger than the long path period itself. This is the first time I've seen this happen, but two-peak morning enhancements are not unusual, although by no means are they seen consistently.
The Kiruna magnetogram shows how little the field was disturbed overnight in order to produce the difference in received signal from VK3QN:
 |
| VK3QN 14MHz long path (130 degrees) array. Image(C) VK3QN, with permission. |
UPDATE:
With early signs of the field becoming disturbed, but with the Kp only reaching a maximum of ~3, the received 14MHz signal from VK3QN took another change in pattern, with no spots during the overnight period, and an extraordinarily sharp and brief rise during the daily long path period (long horizontal lines are periods of non-reception; dots show actual spots):
 |
| 14MHz received signal from VK3QN, 2020 October 19-20. |
No comments:
Post a Comment